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       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row66\" class=\"row_heading level0 row66\" >66</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row66_col0\" class=\"data row66 col0\" >tn24c</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row66_col1\" class=\"data row66 col1\" >Température minimale sur 24 heures (°C)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row66_col2\" class=\"data row66 col2\" >29165</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row67\" class=\"row_heading level0 row67\" >67</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row67_col0\" class=\"data row67 col0\" >tx12c</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row67_col1\" class=\"data row67 col1\" >Température maximale sur 12 heures (°C)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row67_col2\" class=\"data row67 col2\" >21883</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row68\" class=\"row_heading level0 row68\" >68</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row68_col0\" class=\"data row68 col0\" >tx24c</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row68_col1\" class=\"data row68 col1\" >Température maximale sur 24 heures (°C)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row68_col2\" class=\"data row68 col2\" >29165</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row69\" class=\"row_heading level0 row69\" >69</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row69_col0\" class=\"data row69 col0\" >tminsolc</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row69_col1\" class=\"data row69 col1\" >Température minimale du sol sur 12 heures (en °C)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row69_col2\" class=\"data row69 col2\" >27364</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row70\" class=\"row_heading level0 row70\" >70</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row70_col0\" class=\"data row70 col0\" >altitude</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row70_col1\" class=\"data row70 col1\" >Altitude</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row70_col2\" class=\"data row70 col2\" >0</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row71\" class=\"row_heading level0 row71\" >71</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row71_col0\" class=\"data row71 col0\" >longitude</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row71_col1\" class=\"data row71 col1\" >Longitude</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row71_col2\" class=\"data row71 col2\" >0</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row72\" class=\"row_heading level0 row72\" >72</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row72_col0\" class=\"data row72 col0\" >latitude</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row72_col1\" class=\"data row72 col1\" >Latitude</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row72_col2\" class=\"data row72 col2\" >0</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row73\" class=\"row_heading level0 row73\" >73</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row73_col0\" class=\"data row73 col0\" >libgeo</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row73_col1\" class=\"data row73 col1\" >communes (name)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row73_col2\" class=\"data row73 col2\" >0</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row74\" class=\"row_heading level0 row74\" >74</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row74_col0\" class=\"data row74 col0\" >codegeo</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row74_col1\" class=\"data row74 col1\" >communes (code)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row74_col2\" class=\"data row74 col2\" >0</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row75\" class=\"row_heading level0 row75\" >75</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row75_col0\" class=\"data row75 col0\" >nom_epci</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row75_col1\" class=\"data row75 col1\" >EPCI (name)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row75_col2\" class=\"data row75 col2\" >0</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row76\" class=\"row_heading level0 row76\" >76</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row76_col0\" class=\"data row76 col0\" >code_epci</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row76_col1\" class=\"data row76 col1\" >EPCI (code)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row76_col2\" class=\"data row76 col2\" >0</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row77\" class=\"row_heading level0 row77\" >77</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row77_col0\" class=\"data row77 col0\" >nom_dept</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row77_col1\" class=\"data row77 col1\" >department (name)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row77_col2\" class=\"data row77 col2\" >0</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row78\" class=\"row_heading level0 row78\" >78</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row78_col0\" class=\"data row78 col0\" >code_dep</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row78_col1\" class=\"data row78 col1\" >department (code)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row78_col2\" class=\"data row78 col2\" >0</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row79\" class=\"row_heading level0 row79\" >79</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row79_col0\" class=\"data row79 col0\" >nom_reg</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row79_col1\" class=\"data row79 col1\" >region (name)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row79_col2\" class=\"data row79 col2\" >0</td>\n",
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       "            </tr>\n",
       "            <tr>\n",
       "                        <th id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3level0_row80\" class=\"row_heading level0 row80\" >80</th>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row80_col0\" class=\"data row80 col0\" >code_reg</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row80_col1\" class=\"data row80 col1\" >region (code)</td>\n",
       "                        <td id=\"T_a0099504_41de_11eb_aa99_e3cf125b8da3row80_col2\" class=\"data row80 col2\" >0</td>\n",
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       "            </tr>\n",
       "    </tbody></table>"
      ],
      "text/plain": [
       "<pandas.io.formats.style.Styler at 0x7f79fa772ed0>"
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      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Shape is :  (29165, 81)\n"
     ]
    }
   ],
   "source": [
    "df = pd.read_csv(f'{datasets_dir}/SYNOP/{data_filename}', header=0, sep=';')\n",
    "pwk.subtitle('Raw data :')\n",
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    "display(df.tail(10))\n",
    "\n",
    "# ---- Get the columns name as descriptions\n",
    "synop_desc = list(df.columns)\n",
    "\n",
    "# ---- Set Codes as columns name\n",
    "df.columns   = synop_codes\n",
    "code2desc    = dict(zip(synop_codes, synop_desc))\n",
    "\n",
    "# ---- Count the na values by columns\n",
    "columns_na = df.isna().sum().tolist()\n",
    "\n",
    "# ---- Show all of that\n",
    "df_desc=pd.DataFrame({'Code':synop_codes, 'Description':synop_desc, 'Na':columns_na})\n",
    "\n",
    "pwk.subtitle('List of columns :')\n",
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    "display(df_desc.style.set_properties(**{'text-align': 'left'}))\n",
    "\n",
    "print('Shape is : ', df.shape)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Step 3 - Keep only certain columns"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
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   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/markdown": [
       "<br>**Our selected columns :**"
      ],
      "text/plain": [
       "<IPython.core.display.Markdown object>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>date</th>\n",
       "      <th>pmer</th>\n",
       "      <th>tend</th>\n",
       "      <th>cod_tend</th>\n",
       "      <th>dd</th>\n",
       "      <th>ff</th>\n",
       "      <th>td</th>\n",
       "      <th>u</th>\n",
       "      <th>ww</th>\n",
       "      <th>pres</th>\n",
       "      <th>rafper</th>\n",
       "      <th>per</th>\n",
       "      <th>rr1</th>\n",
       "      <th>rr3</th>\n",
       "      <th>tc</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>0</th>\n",
       "      <td>2015-06-12T17:00:00+02:00</td>\n",
       "      <td>101050.0</td>\n",
       "      <td>-230.0</td>\n",
       "      <td>6.0</td>\n",
       "      <td>140.0</td>\n",
       "      <td>3.6</td>\n",
       "      <td>286.25</td>\n",
       "      <td>50.0</td>\n",
       "      <td>2.0</td>\n",
       "      <td>98330.0</td>\n",
       "      <td>5.1</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>-0.1</td>\n",
       "      <td>24.2</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1</th>\n",
       "      <td>2015-06-05T17:00:00+02:00</td>\n",
       "      <td>101590.0</td>\n",
       "      <td>-220.0</td>\n",
       "      <td>8.0</td>\n",
       "      <td>190.0</td>\n",
       "      <td>3.9</td>\n",
       "      <td>286.95</td>\n",
       "      <td>32.0</td>\n",
       "      <td>3.0</td>\n",
       "      <td>98930.0</td>\n",
       "      <td>9.9</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>32.6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>2</th>\n",
       "      <td>2015-06-15T11:00:00+02:00</td>\n",
       "      <td>101420.0</td>\n",
       "      <td>90.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>270.0</td>\n",
       "      <td>1.5</td>\n",
       "      <td>286.85</td>\n",
       "      <td>64.0</td>\n",
       "      <td>3.0</td>\n",
       "      <td>98660.0</td>\n",
       "      <td>4.5</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>20.8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>3</th>\n",
       "      <td>2015-06-15T14:00:00+02:00</td>\n",
       "      <td>101430.0</td>\n",
       "      <td>20.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>10.0</td>\n",
       "      <td>2.5</td>\n",
       "      <td>286.45</td>\n",
       "      <td>55.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>98680.0</td>\n",
       "      <td>5.1</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>22.8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>4</th>\n",
       "      <td>2015-06-20T05:00:00+02:00</td>\n",
       "      <td>102030.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>4.0</td>\n",
       "      <td>50.0</td>\n",
       "      <td>0.7</td>\n",
       "      <td>282.95</td>\n",
       "      <td>82.0</td>\n",
       "      <td>2.0</td>\n",
       "      <td>99170.0</td>\n",
       "      <td>2.4</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>12.8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>5</th>\n",
       "      <td>2015-06-22T05:00:00+02:00</td>\n",
       "      <td>101680.0</td>\n",
       "      <td>-120.0</td>\n",
       "      <td>6.0</td>\n",
       "      <td>180.0</td>\n",
       "      <td>0.7</td>\n",
       "      <td>286.15</td>\n",
       "      <td>80.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>98870.0</td>\n",
       "      <td>4.7</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>-0.1</td>\n",
       "      <td>16.5</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>6</th>\n",
       "      <td>2015-06-23T02:00:00+02:00</td>\n",
       "      <td>101270.0</td>\n",
       "      <td>150.0</td>\n",
       "      <td>2.0</td>\n",
       "      <td>20.0</td>\n",
       "      <td>4.5</td>\n",
       "      <td>282.95</td>\n",
       "      <td>54.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>98490.0</td>\n",
       "      <td>10.2</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>19.3</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>7</th>\n",
       "      <td>2015-06-25T14:00:00+02:00</td>\n",
       "      <td>102180.0</td>\n",
       "      <td>-40.0</td>\n",
       "      <td>8.0</td>\n",
       "      <td>10.0</td>\n",
       "      <td>2.3</td>\n",
       "      <td>283.25</td>\n",
       "      <td>38.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>99430.0</td>\n",
       "      <td>7.5</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>25.5</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>8</th>\n",
       "      <td>2015-07-05T20:00:00+02:00</td>\n",
       "      <td>101410.0</td>\n",
       "      <td>50.0</td>\n",
       "      <td>3.0</td>\n",
       "      <td>190.0</td>\n",
       "      <td>8.3</td>\n",
       "      <td>288.05</td>\n",
       "      <td>33.0</td>\n",
       "      <td>3.0</td>\n",
       "      <td>98760.0</td>\n",
       "      <td>13.4</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>33.4</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>9</th>\n",
       "      <td>2015-05-14T17:00:00+02:00</td>\n",
       "      <td>101070.0</td>\n",
       "      <td>-150.0</td>\n",
       "      <td>6.0</td>\n",
       "      <td>20.0</td>\n",
       "      <td>6.2</td>\n",
       "      <td>284.95</td>\n",
       "      <td>60.0</td>\n",
       "      <td>3.0</td>\n",
       "      <td>98300.0</td>\n",
       "      <td>11.1</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>19.8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>10</th>\n",
       "      <td>2015-03-16T22:00:00+01:00</td>\n",
       "      <td>102150.0</td>\n",
       "      <td>40.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>50.0</td>\n",
       "      <td>1.7</td>\n",
       "      <td>275.05</td>\n",
       "      <td>62.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>99240.0</td>\n",
       "      <td>4.6</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>8.8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>11</th>\n",
       "      <td>2015-03-26T01:00:00+01:00</td>\n",
       "      <td>101140.0</td>\n",
       "      <td>100.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>330.0</td>\n",
       "      <td>5.9</td>\n",
       "      <td>275.45</td>\n",
       "      <td>82.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>98220.0</td>\n",
       "      <td>8.1</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>5.1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>12</th>\n",
       "      <td>2015-04-03T17:00:00+02:00</td>\n",
       "      <td>101690.0</td>\n",
       "      <td>-250.0</td>\n",
       "      <td>7.0</td>\n",
       "      <td>340.0</td>\n",
       "      <td>3.5</td>\n",
       "      <td>278.15</td>\n",
       "      <td>55.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>98850.0</td>\n",
       "      <td>6.4</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>13.9</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>13</th>\n",
       "      <td>2015-04-05T20:00:00+02:00</td>\n",
       "      <td>101850.0</td>\n",
       "      <td>140.0</td>\n",
       "      <td>3.0</td>\n",
       "      <td>10.0</td>\n",
       "      <td>7.8</td>\n",
       "      <td>268.45</td>\n",
       "      <td>38.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>98950.0</td>\n",
       "      <td>13.5</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>8.9</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>14</th>\n",
       "      <td>2014-10-22T17:00:00+02:00</td>\n",
       "      <td>102670.0</td>\n",
       "      <td>-70.0</td>\n",
       "      <td>8.0</td>\n",
       "      <td>20.0</td>\n",
       "      <td>4.6</td>\n",
       "      <td>275.35</td>\n",
       "      <td>55.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>99770.0</td>\n",
       "      <td>7.2</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>10.9</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>15</th>\n",
       "      <td>2015-02-08T16:00:00+01:00</td>\n",
       "      <td>102570.0</td>\n",
       "      <td>20.0</td>\n",
       "      <td>3.0</td>\n",
       "      <td>350.0</td>\n",
       "      <td>12.3</td>\n",
       "      <td>271.55</td>\n",
       "      <td>68.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>99590.0</td>\n",
       "      <td>19.9</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>3.8</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>16</th>\n",
       "      <td>2015-02-11T07:00:00+01:00</td>\n",
       "      <td>102670.0</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>7.0</td>\n",
       "      <td>290.0</td>\n",
       "      <td>2.0</td>\n",
       "      <td>267.55</td>\n",
       "      <td>88.0</td>\n",
       "      <td>10.0</td>\n",
       "      <td>99610.0</td>\n",
       "      <td>3.3</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>-3.9</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>17</th>\n",
       "      <td>2015-02-07T04:00:00+01:00</td>\n",
       "      <td>101900.0</td>\n",
       "      <td>160.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>310.0</td>\n",
       "      <td>2.0</td>\n",
       "      <td>268.65</td>\n",
       "      <td>74.0</td>\n",
       "      <td>2.0</td>\n",
       "      <td>98900.0</td>\n",
       "      <td>3.2</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>-0.4</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>18</th>\n",
       "      <td>2015-02-13T04:00:00+01:00</td>\n",
       "      <td>102140.0</td>\n",
       "      <td>-50.0</td>\n",
       "      <td>8.0</td>\n",
       "      <td>140.0</td>\n",
       "      <td>2.1</td>\n",
       "      <td>273.55</td>\n",
       "      <td>74.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>99190.0</td>\n",
       "      <td>4.9</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>4.6</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>19</th>\n",
       "      <td>2015-02-16T19:00:00+01:00</td>\n",
       "      <td>102060.0</td>\n",
       "      <td>100.0</td>\n",
       "      <td>3.0</td>\n",
       "      <td>20.0</td>\n",
       "      <td>3.2</td>\n",
       "      <td>275.65</td>\n",
       "      <td>88.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>99110.0</td>\n",
       "      <td>5.1</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>4.3</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                         date      pmer   tend  cod_tend     dd    ff      td  \\\n",
       "0   2015-06-12T17:00:00+02:00  101050.0 -230.0       6.0  140.0   3.6  286.25   \n",
       "1   2015-06-05T17:00:00+02:00  101590.0 -220.0       8.0  190.0   3.9  286.95   \n",
       "2   2015-06-15T11:00:00+02:00  101420.0   90.0       1.0  270.0   1.5  286.85   \n",
       "3   2015-06-15T14:00:00+02:00  101430.0   20.0       1.0   10.0   2.5  286.45   \n",
       "4   2015-06-20T05:00:00+02:00  102030.0    0.0       4.0   50.0   0.7  282.95   \n",
       "5   2015-06-22T05:00:00+02:00  101680.0 -120.0       6.0  180.0   0.7  286.15   \n",
       "6   2015-06-23T02:00:00+02:00  101270.0  150.0       2.0   20.0   4.5  282.95   \n",
       "7   2015-06-25T14:00:00+02:00  102180.0  -40.0       8.0   10.0   2.3  283.25   \n",
       "8   2015-07-05T20:00:00+02:00  101410.0   50.0       3.0  190.0   8.3  288.05   \n",
       "9   2015-05-14T17:00:00+02:00  101070.0 -150.0       6.0   20.0   6.2  284.95   \n",
       "10  2015-03-16T22:00:00+01:00  102150.0   40.0       1.0   50.0   1.7  275.05   \n",
       "11  2015-03-26T01:00:00+01:00  101140.0  100.0       1.0  330.0   5.9  275.45   \n",
       "12  2015-04-03T17:00:00+02:00  101690.0 -250.0       7.0  340.0   3.5  278.15   \n",
       "13  2015-04-05T20:00:00+02:00  101850.0  140.0       3.0   10.0   7.8  268.45   \n",
       "14  2014-10-22T17:00:00+02:00  102670.0  -70.0       8.0   20.0   4.6  275.35   \n",
       "15  2015-02-08T16:00:00+01:00  102570.0   20.0       3.0  350.0  12.3  271.55   \n",
       "16  2015-02-11T07:00:00+01:00  102670.0  -10.0       7.0  290.0   2.0  267.55   \n",
       "17  2015-02-07T04:00:00+01:00  101900.0  160.0       1.0  310.0   2.0  268.65   \n",
       "18  2015-02-13T04:00:00+01:00  102140.0  -50.0       8.0  140.0   2.1  273.55   \n",
       "19  2015-02-16T19:00:00+01:00  102060.0  100.0       3.0   20.0   3.2  275.65   \n",
       "\n",
       "       u    ww     pres  rafper   per  rr1  rr3    tc  \n",
       "0   50.0   2.0  98330.0     5.1 -10.0  0.0 -0.1  24.2  \n",
       "1   32.0   3.0  98930.0     9.9 -10.0  0.0  0.0  32.6  \n",
       "2   64.0   3.0  98660.0     4.5 -10.0  0.0  0.0  20.8  \n",
       "3   55.0   1.0  98680.0     5.1 -10.0  0.0  0.0  22.8  \n",
       "4   82.0   2.0  99170.0     2.4 -10.0  0.0  0.0  12.8  \n",
       "5   80.0   1.0  98870.0     4.7 -10.0  0.0 -0.1  16.5  \n",
       "6   54.0   0.0  98490.0    10.2 -10.0  0.0  0.0  19.3  \n",
       "7   38.0   1.0  99430.0     7.5 -10.0  0.0  0.0  25.5  \n",
       "8   33.0   3.0  98760.0    13.4 -10.0  0.0  0.0  33.4  \n",
       "9   60.0   3.0  98300.0    11.1 -10.0  0.0  0.0  19.8  \n",
       "10  62.0   1.0  99240.0     4.6 -10.0  0.0  0.0   8.8  \n",
       "11  82.0   1.0  98220.0     8.1 -10.0  0.0  0.0   5.1  \n",
       "12  55.0   1.0  98850.0     6.4 -10.0  0.0  0.0  13.9  \n",
       "13  38.0   1.0  98950.0    13.5 -10.0  0.0  0.0   8.9  \n",
       "14  55.0   1.0  99770.0     7.2 -10.0  0.0  0.0  10.9  \n",
       "15  68.0   0.0  99590.0    19.9 -10.0  0.0  0.0   3.8  \n",
       "16  88.0  10.0  99610.0     3.3 -10.0  0.0  0.0  -3.9  \n",
       "17  74.0   2.0  98900.0     3.2 -10.0  0.0  0.0  -0.4  \n",
       "18  74.0   0.0  99190.0     4.9 -10.0  0.0  0.0   4.6  \n",
       "19  88.0   1.0  99110.0     5.1 -10.0  0.0  0.0   4.3  "
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/markdown": [
       "<br>**Few statistics :**"
      ],
      "text/plain": [
       "<IPython.core.display.Markdown object>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
       "    }\n",
       "\n",
       "    .dataframe tbody tr th {\n",
       "        vertical-align: top;\n",
       "    }\n",
       "\n",
       "    .dataframe thead th {\n",
       "        text-align: right;\n",
       "    }\n",
       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>pmer</th>\n",
       "      <th>tend</th>\n",
       "      <th>cod_tend</th>\n",
       "      <th>dd</th>\n",
       "      <th>ff</th>\n",
       "      <th>td</th>\n",
       "      <th>u</th>\n",
       "      <th>ww</th>\n",
       "      <th>pres</th>\n",
       "      <th>rafper</th>\n",
       "      <th>per</th>\n",
       "      <th>rr1</th>\n",
       "      <th>rr3</th>\n",
       "      <th>tc</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>count</th>\n",
       "      <td>29148.000000</td>\n",
       "      <td>29163.000000</td>\n",
       "      <td>29163.000000</td>\n",
       "      <td>29162.000000</td>\n",
       "      <td>29163.00000</td>\n",
       "      <td>29148.000000</td>\n",
       "      <td>29148.000000</td>\n",
       "      <td>29164.000000</td>\n",
       "      <td>29165.000000</td>\n",
       "      <td>29156.000000</td>\n",
       "      <td>29157.0</td>\n",
       "      <td>29070.000000</td>\n",
       "      <td>29092.000000</td>\n",
       "      <td>29151.000000</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>mean</th>\n",
       "      <td>101753.552902</td>\n",
       "      <td>0.255118</td>\n",
       "      <td>4.306930</td>\n",
       "      <td>204.088197</td>\n",
       "      <td>3.39653</td>\n",
       "      <td>280.027865</td>\n",
       "      <td>71.021614</td>\n",
       "      <td>10.106158</td>\n",
       "      <td>98894.598320</td>\n",
       "      <td>6.299005</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.092886</td>\n",
       "      <td>0.279008</td>\n",
       "      <td>12.688261</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>std</th>\n",
       "      <td>798.093804</td>\n",
       "      <td>111.438232</td>\n",
       "      <td>2.716149</td>\n",
       "      <td>115.422508</td>\n",
       "      <td>2.46898</td>\n",
       "      <td>5.857534</td>\n",
       "      <td>18.275755</td>\n",
       "      <td>19.404573</td>\n",
       "      <td>761.586766</td>\n",
       "      <td>3.852478</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.605673</td>\n",
       "      <td>1.414611</td>\n",
       "      <td>8.146390</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>min</th>\n",
       "      <td>97960.000000</td>\n",
       "      <td>-750.000000</td>\n",
       "      <td>0.000000</td>\n",
       "      <td>0.000000</td>\n",
       "      <td>0.00000</td>\n",
       "      <td>249.250000</td>\n",
       "      <td>2.000000</td>\n",
       "      <td>0.000000</td>\n",
       "      <td>95170.000000</td>\n",
       "      <td>0.000000</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>-0.100000</td>\n",
       "      <td>-0.100000</td>\n",
       "      <td>-12.100000</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>25%</th>\n",
       "      <td>101300.000000</td>\n",
       "      <td>-70.000000</td>\n",
       "      <td>2.000000</td>\n",
       "      <td>130.000000</td>\n",
       "      <td>1.50000</td>\n",
       "      <td>275.825000</td>\n",
       "      <td>58.000000</td>\n",
       "      <td>2.000000</td>\n",
       "      <td>98480.000000</td>\n",
       "      <td>3.600000</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.000000</td>\n",
       "      <td>0.000000</td>\n",
       "      <td>6.600000</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>50%</th>\n",
       "      <td>101740.000000</td>\n",
       "      <td>0.000000</td>\n",
       "      <td>3.000000</td>\n",
       "      <td>190.000000</td>\n",
       "      <td>2.90000</td>\n",
       "      <td>280.250000</td>\n",
       "      <td>74.000000</td>\n",
       "      <td>2.000000</td>\n",
       "      <td>98920.000000</td>\n",
       "      <td>5.300000</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.000000</td>\n",
       "      <td>0.000000</td>\n",
       "      <td>12.500000</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>75%</th>\n",
       "      <td>102240.000000</td>\n",
       "      <td>70.000000</td>\n",
       "      <td>7.000000</td>\n",
       "      <td>330.000000</td>\n",
       "      <td>4.60000</td>\n",
       "      <td>284.550000</td>\n",
       "      <td>86.000000</td>\n",
       "      <td>3.000000</td>\n",
       "      <td>99360.000000</td>\n",
       "      <td>8.200000</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>0.000000</td>\n",
       "      <td>0.000000</td>\n",
       "      <td>18.500000</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>max</th>\n",
       "      <td>104280.000000</td>\n",
       "      <td>810.000000</td>\n",
       "      <td>8.000000</td>\n",
       "      <td>360.000000</td>\n",
       "      <td>18.80000</td>\n",
       "      <td>295.950000</td>\n",
       "      <td>100.000000</td>\n",
       "      <td>97.000000</td>\n",
       "      <td>101210.000000</td>\n",
       "      <td>30.200000</td>\n",
       "      <td>-10.0</td>\n",
       "      <td>19.000000</td>\n",
       "      <td>45.000000</td>\n",
       "      <td>38.900000</td>\n",
       "    </tr>\n",
       "  </tbody>\n",
       "</table>\n",
       "</div>"
      ],
      "text/plain": [
       "                pmer          tend      cod_tend            dd           ff  \\\n",
       "count   29148.000000  29163.000000  29163.000000  29162.000000  29163.00000   \n",
       "mean   101753.552902      0.255118      4.306930    204.088197      3.39653   \n",
       "std       798.093804    111.438232      2.716149    115.422508      2.46898   \n",
       "min     97960.000000   -750.000000      0.000000      0.000000      0.00000   \n",
       "25%    101300.000000    -70.000000      2.000000    130.000000      1.50000   \n",
       "50%    101740.000000      0.000000      3.000000    190.000000      2.90000   \n",
       "75%    102240.000000     70.000000      7.000000    330.000000      4.60000   \n",
       "max    104280.000000    810.000000      8.000000    360.000000     18.80000   \n",
       "\n",
       "                 td             u            ww           pres        rafper  \\\n",
       "count  29148.000000  29148.000000  29164.000000   29165.000000  29156.000000   \n",
       "mean     280.027865     71.021614     10.106158   98894.598320      6.299005   \n",
       "std        5.857534     18.275755     19.404573     761.586766      3.852478   \n",
       "min      249.250000      2.000000      0.000000   95170.000000      0.000000   \n",
       "25%      275.825000     58.000000      2.000000   98480.000000      3.600000   \n",
       "50%      280.250000     74.000000      2.000000   98920.000000      5.300000   \n",
       "75%      284.550000     86.000000      3.000000   99360.000000      8.200000   \n",
       "max      295.950000    100.000000     97.000000  101210.000000     30.200000   \n",
       "\n",
       "           per           rr1           rr3            tc  \n",
       "count  29157.0  29070.000000  29092.000000  29151.000000  \n",
       "mean     -10.0      0.092886      0.279008     12.688261  \n",
       "std        0.0      0.605673      1.414611      8.146390  \n",
       "min      -10.0     -0.100000     -0.100000    -12.100000  \n",
       "25%      -10.0      0.000000      0.000000      6.600000  \n",
       "50%      -10.0      0.000000      0.000000     12.500000  \n",
       "75%      -10.0      0.000000      0.000000     18.500000  \n",
       "max      -10.0     19.000000     45.000000     38.900000  "
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "columns_used=['date','pmer','tend','cod_tend','dd','ff','td','u','ww','pres','rafper','per','rr1','rr3','tc']\n",
    "\n",
    "# ---- Drop unused columns\n",
    "\n",
    "to_drop = df.columns.difference(columns_used)\n",
    "df.drop( to_drop, axis=1, inplace=True)\n",
    "\n",
    "# ---- Show all of that\n",
    "\n",
    "pwk.subtitle('Our selected columns :')\n",
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    "display(df.head(20))\n",
    "\n",
    "pwk.subtitle('Few statistics :')\n",
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    "display(df.describe())\n",
    "\n",
    "# ---- 'per' column is constant, we can drop it\n",
    "\n",
    "df.drop(['per'],axis=1,inplace=True)\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Step 4 - Cleanup session : Let's sort it and cook up some NaN values"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
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   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/markdown": [
       "<br>**Before :**"
      ],
      "text/plain": [
       "<IPython.core.display.Markdown object>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/html": [
       "<div>\n",
       "<style scoped>\n",
       "    .dataframe tbody tr th:only-of-type {\n",
       "        vertical-align: middle;\n",
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       "\n",
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       "        vertical-align: top;\n",
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       "\n",
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       "        text-align: right;\n",
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       "</style>\n",
       "<table border=\"1\" class=\"dataframe\">\n",
       "  <thead>\n",
       "    <tr style=\"text-align: right;\">\n",
       "      <th></th>\n",
       "      <th>date</th>\n",
       "      <th>pmer</th>\n",
       "      <th>tend</th>\n",
       "      <th>cod_tend</th>\n",
       "      <th>dd</th>\n",
       "      <th>ff</th>\n",
       "      <th>td</th>\n",
       "      <th>u</th>\n",
       "      <th>ww</th>\n",
       "      <th>pres</th>\n",
       "      <th>rafper</th>\n",
       "      <th>rr1</th>\n",
       "      <th>rr3</th>\n",
       "      <th>tc</th>\n",
       "    </tr>\n",
       "  </thead>\n",
       "  <tbody>\n",
       "    <tr>\n",
       "      <th>396</th>\n",
       "      <td>2010-02-19T16:00:00+01:00</td>\n",
       "      <td>99760.0</td>\n",
       "      <td>180.0</td>\n",
       "      <td>3.0</td>\n",
       "      <td>330.0</td>\n",
       "      <td>4.6</td>\n",
       "      <td>275.85</td>\n",
       "      <td>79.0</td>\n",
       "      <td>21.0</td>\n",
       "      <td>96890.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>0.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>6.1</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>434</th>\n",
       "      <td>2010-02-24T10:00:00+01:00</td>\n",
       "      <td>100310.0</td>\n",
       "      <td>60.0</td>\n",
       "      <td>1.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>279.25</td>\n",
       "      <td>77.0</td>\n",
       "      <td>2.0</td>\n",
       "      <td>97470.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>0.2</td>\n",
       "      <td>0.2</td>\n",
       "      <td>9.9</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>477</th>\n",
       "      <td>2010-03-01T19:00:00+01:00</td>\n",
       "      <td>101400.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>340.0</td>\n",
       "      <td>2.6</td>\n",
       "      <td>275.45</td>\n",
       "      <td>61.0</td>\n",
       "      <td>2.0</td>\n",
       "      <td>98520.0</td>\n",
       "      <td>5.7</td>\n",
       "      <td>0.0</td>\n",
       "      <td>NaN</td>\n",
       "      <td>9.4</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>734</th>\n",
       "      <td>2010-04-03T02:00:00+02:00</td>\n",
       "      <td>101550.0</td>\n",
       "      <td>50.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>190.0</td>\n",
       "      <td>7.7</td>\n",
       "      <td>277.55</td>\n",
       "      <td>64.0</td>\n",
       "      <td>2.0</td>\n",
       "      <td>98680.0</td>\n",
       "      <td>12.3</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>10.9</td>\n",
       "    </tr>\n",
       "    <tr>\n",
       "      <th>1061</th>\n",
       "      <td>2010-05-13T23:00:00+02:00</td>\n",
       "      <td>NaN</td>\n",
       "      <td>60.0</td>\n",
       "      <td>2.0</td>\n",
       "      <td>330.0</td>\n",
       "      <td>4.6</td>\n",
       "      <td>NaN</td>\n",
       "      <td>NaN</td>\n",
       "      <td>2.0</td>\n",
       "      <td>98220.0</td>\n",
       "      <td>7.7</td>\n",
       "      <td>0.0</td>\n",
       "      <td>0.0</td>\n",
       "      <td>9.9</td>\n",