diff --git a/module3/exo3/exercice.ipynb b/module3/exo3/exercice.ipynb
index 9f9884b822ffe7c11dd1efd3ed8c1f97e4dc1353..430703bcb239f8c018e85204e72dd8bd433607eb 100644
--- a/module3/exo3/exercice.ipynb
+++ b/module3/exo3/exercice.ipynb
@@ -9,7 +9,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 15,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -21,7 +21,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 16,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -30,7 +30,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 17,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -44,38 +44,425 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 24,
    "metadata": {},
    "outputs": [
     {
-     "ename": "ParserError",
-     "evalue": "Error tokenizing data. C error: Expected 1 fields in line 33, saw 4\n",
-     "output_type": "error",
-     "traceback": [
-      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
-      "\u001b[0;31mParserError\u001b[0m                               Traceback (most recent call last)",
-      "\u001b[0;32m<ipython-input-4-ae9cd278969e>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mraw_data\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mpd\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mread_csv\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mdata_file\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mskiprows\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      2\u001b[0m \u001b[0mraw_data\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-      "\u001b[0;32m/opt/conda/lib/python3.6/site-packages/pandas/io/parsers.py\u001b[0m in \u001b[0;36mparser_f\u001b[0;34m(filepath_or_buffer, sep, delimiter, header, names, index_col, usecols, squeeze, prefix, mangle_dupe_cols, dtype, engine, converters, true_values, false_values, skipinitialspace, skiprows, nrows, na_values, keep_default_na, na_filter, verbose, skip_blank_lines, parse_dates, infer_datetime_format, keep_date_col, date_parser, dayfirst, iterator, chunksize, compression, thousands, decimal, lineterminator, quotechar, quoting, escapechar, comment, encoding, dialect, tupleize_cols, error_bad_lines, warn_bad_lines, skipfooter, skip_footer, doublequote, delim_whitespace, as_recarray, compact_ints, use_unsigned, low_memory, buffer_lines, memory_map, float_precision)\u001b[0m\n\u001b[1;32m    707\u001b[0m                     skip_blank_lines=skip_blank_lines)\n\u001b[1;32m    708\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 709\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0m_read\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mfilepath_or_buffer\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mkwds\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    710\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    711\u001b[0m     \u001b[0mparser_f\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m__name__\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mname\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-      "\u001b[0;32m/opt/conda/lib/python3.6/site-packages/pandas/io/parsers.py\u001b[0m in \u001b[0;36m_read\u001b[0;34m(filepath_or_buffer, kwds)\u001b[0m\n\u001b[1;32m    453\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    454\u001b[0m     \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 455\u001b[0;31m         \u001b[0mdata\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mparser\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mread\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mnrows\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    456\u001b[0m     \u001b[0;32mfinally\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    457\u001b[0m         \u001b[0mparser\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mclose\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-      "\u001b[0;32m/opt/conda/lib/python3.6/site-packages/pandas/io/parsers.py\u001b[0m in \u001b[0;36mread\u001b[0;34m(self, nrows)\u001b[0m\n\u001b[1;32m   1067\u001b[0m                 \u001b[0;32mraise\u001b[0m \u001b[0mValueError\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m'skipfooter not supported for iteration'\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m   1068\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m-> 1069\u001b[0;31m         \u001b[0mret\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_engine\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mread\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mnrows\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m   1070\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m   1071\u001b[0m         \u001b[0;32mif\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0moptions\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mget\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m'as_recarray'\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-      "\u001b[0;32m/opt/conda/lib/python3.6/site-packages/pandas/io/parsers.py\u001b[0m in \u001b[0;36mread\u001b[0;34m(self, nrows)\u001b[0m\n\u001b[1;32m   1837\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0mread\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mnrows\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;32mNone\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m   1838\u001b[0m         \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m-> 1839\u001b[0;31m             \u001b[0mdata\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_reader\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mread\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mnrows\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m   1840\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mStopIteration\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m   1841\u001b[0m             \u001b[0;32mif\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_first_chunk\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-      "\u001b[0;32mpandas/_libs/parsers.pyx\u001b[0m in \u001b[0;36mpandas._libs.parsers.TextReader.read\u001b[0;34m()\u001b[0m\n",
-      "\u001b[0;32mpandas/_libs/parsers.pyx\u001b[0m in \u001b[0;36mpandas._libs.parsers.TextReader._read_low_memory\u001b[0;34m()\u001b[0m\n",
-      "\u001b[0;32mpandas/_libs/parsers.pyx\u001b[0m in \u001b[0;36mpandas._libs.parsers.TextReader._read_rows\u001b[0;34m()\u001b[0m\n",
-      "\u001b[0;32mpandas/_libs/parsers.pyx\u001b[0m in \u001b[0;36mpandas._libs.parsers.TextReader._tokenize_rows\u001b[0;34m()\u001b[0m\n",
-      "\u001b[0;32mpandas/_libs/parsers.pyx\u001b[0m in \u001b[0;36mpandas._libs.parsers.raise_parser_error\u001b[0;34m()\u001b[0m\n",
-      "\u001b[0;31mParserError\u001b[0m: Error tokenizing data. C error: Expected 1 fields in line 33, saw 4\n"
-     ]
+     "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>1958-03-29</th>\n",
+       "      <th>316.19</th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>0</th>\n",
+       "      <td>1958-04-05</td>\n",
+       "      <td>317.31</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1</th>\n",
+       "      <td>1958-04-12</td>\n",
+       "      <td>317.69</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>2</th>\n",
+       "      <td>1958-04-19</td>\n",
+       "      <td>317.58</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3</th>\n",
+       "      <td>1958-04-26</td>\n",
+       "      <td>316.48</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4</th>\n",
+       "      <td>1958-05-03</td>\n",
+       "      <td>316.95</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>5</th>\n",
+       "      <td>1958-05-17</td>\n",
+       "      <td>317.56</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>6</th>\n",
+       "      <td>1958-05-24</td>\n",
+       "      <td>317.99</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>7</th>\n",
+       "      <td>1958-07-05</td>\n",
+       "      <td>315.85</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>8</th>\n",
+       "      <td>1958-07-12</td>\n",
+       "      <td>315.85</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>9</th>\n",
+       "      <td>1958-07-19</td>\n",
+       "      <td>315.46</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>10</th>\n",
+       "      <td>1958-07-26</td>\n",
+       "      <td>315.59</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>11</th>\n",
+       "      <td>1958-08-02</td>\n",
+       "      <td>315.64</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>12</th>\n",
+       "      <td>1958-08-09</td>\n",
+       "      <td>315.10</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>13</th>\n",
+       "      <td>1958-08-16</td>\n",
+       "      <td>315.09</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>14</th>\n",
+       "      <td>1958-08-30</td>\n",
+       "      <td>314.14</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>15</th>\n",
+       "      <td>1958-09-06</td>\n",
+       "      <td>313.54</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>16</th>\n",
+       "      <td>1958-11-08</td>\n",
+       "      <td>313.05</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>17</th>\n",
+       "      <td>1958-11-15</td>\n",
+       "      <td>313.26</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>18</th>\n",
+       "      <td>1958-11-22</td>\n",
+       "      <td>313.57</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>19</th>\n",
+       "      <td>1958-11-29</td>\n",
+       "      <td>314.01</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>20</th>\n",
+       "      <td>1958-12-06</td>\n",
+       "      <td>314.56</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>21</th>\n",
+       "      <td>1958-12-13</td>\n",
+       "      <td>314.41</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>22</th>\n",
+       "      <td>1958-12-20</td>\n",
+       "      <td>314.77</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>23</th>\n",
+       "      <td>1958-12-27</td>\n",
+       "      <td>315.21</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>24</th>\n",
+       "      <td>1959-01-03</td>\n",
+       "      <td>315.24</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>25</th>\n",
+       "      <td>1959-01-10</td>\n",
+       "      <td>315.50</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>26</th>\n",
+       "      <td>1959-01-17</td>\n",
+       "      <td>315.69</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>27</th>\n",
+       "      <td>1959-01-24</td>\n",
+       "      <td>315.86</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>28</th>\n",
+       "      <td>1959-01-31</td>\n",
+       "      <td>315.42</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>29</th>\n",
+       "      <td>1959-02-14</td>\n",
+       "      <td>316.94</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>...</th>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3327</th>\n",
+       "      <td>2023-06-10</td>\n",
+       "      <td>424.01</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3328</th>\n",
+       "      <td>2023-06-17</td>\n",
+       "      <td>422.93</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3329</th>\n",
+       "      <td>2023-06-24</td>\n",
+       "      <td>422.21</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3330</th>\n",
+       "      <td>2023-07-01</td>\n",
+       "      <td>422.80</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3331</th>\n",
+       "      <td>2023-07-08</td>\n",
+       "      <td>422.32</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3332</th>\n",
+       "      <td>2023-07-15</td>\n",
+       "      <td>421.43</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3333</th>\n",
+       "      <td>2023-07-22</td>\n",
+       "      <td>420.74</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3334</th>\n",
+       "      <td>2023-07-29</td>\n",
+       "      <td>420.88</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3335</th>\n",
+       "      <td>2023-08-05</td>\n",
+       "      <td>420.39</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3336</th>\n",
+       "      <td>2023-08-12</td>\n",
+       "      <td>420.30</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3337</th>\n",
+       "      <td>2023-08-19</td>\n",
+       "      <td>418.96</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3338</th>\n",
+       "      <td>2023-08-26</td>\n",
+       "      <td>418.84</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3339</th>\n",
+       "      <td>2023-09-02</td>\n",
+       "      <td>418.50</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3340</th>\n",
+       "      <td>2023-09-09</td>\n",
+       "      <td>418.28</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3341</th>\n",
+       "      <td>2023-09-16</td>\n",
+       "      <td>418.52</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3342</th>\n",
+       "      <td>2023-09-23</td>\n",
+       "      <td>417.77</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3343</th>\n",
+       "      <td>2023-09-30</td>\n",
+       "      <td>417.89</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3344</th>\n",
+       "      <td>2023-10-07</td>\n",
+       "      <td>418.10</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3345</th>\n",
+       "      <td>2023-10-14</td>\n",
+       "      <td>418.82</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3346</th>\n",
+       "      <td>2023-10-21</td>\n",
+       "      <td>418.85</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3347</th>\n",
+       "      <td>2023-10-28</td>\n",
+       "      <td>418.62</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3348</th>\n",
+       "      <td>2023-11-04</td>\n",
+       "      <td>419.07</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3349</th>\n",
+       "      <td>2023-11-11</td>\n",
+       "      <td>419.41</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3350</th>\n",
+       "      <td>2023-11-18</td>\n",
+       "      <td>421.18</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3351</th>\n",
+       "      <td>2023-11-25</td>\n",
+       "      <td>421.22</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3352</th>\n",
+       "      <td>2023-12-02</td>\n",
+       "      <td>420.28</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3353</th>\n",
+       "      <td>2023-12-09</td>\n",
+       "      <td>421.23</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3354</th>\n",
+       "      <td>2023-12-16</td>\n",
+       "      <td>422.57</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3355</th>\n",
+       "      <td>2023-12-23</td>\n",
+       "      <td>422.06</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3356</th>\n",
+       "      <td>2023-12-30</td>\n",
+       "      <td>421.76</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "<p>3357 rows × 2 columns</p>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "      1958-03-29   316.19\n",
+       "0     1958-04-05   317.31\n",
+       "1     1958-04-12   317.69\n",
+       "2     1958-04-19   317.58\n",
+       "3     1958-04-26   316.48\n",
+       "4     1958-05-03   316.95\n",
+       "5     1958-05-17   317.56\n",
+       "6     1958-05-24   317.99\n",
+       "7     1958-07-05   315.85\n",
+       "8     1958-07-12   315.85\n",
+       "9     1958-07-19   315.46\n",
+       "10    1958-07-26   315.59\n",
+       "11    1958-08-02   315.64\n",
+       "12    1958-08-09   315.10\n",
+       "13    1958-08-16   315.09\n",
+       "14    1958-08-30   314.14\n",
+       "15    1958-09-06   313.54\n",
+       "16    1958-11-08   313.05\n",
+       "17    1958-11-15   313.26\n",
+       "18    1958-11-22   313.57\n",
+       "19    1958-11-29   314.01\n",
+       "20    1958-12-06   314.56\n",
+       "21    1958-12-13   314.41\n",
+       "22    1958-12-20   314.77\n",
+       "23    1958-12-27   315.21\n",
+       "24    1959-01-03   315.24\n",
+       "25    1959-01-10   315.50\n",
+       "26    1959-01-17   315.69\n",
+       "27    1959-01-24   315.86\n",
+       "28    1959-01-31   315.42\n",
+       "29    1959-02-14   316.94\n",
+       "...          ...      ...\n",
+       "3327  2023-06-10   424.01\n",
+       "3328  2023-06-17   422.93\n",
+       "3329  2023-06-24   422.21\n",
+       "3330  2023-07-01   422.80\n",
+       "3331  2023-07-08   422.32\n",
+       "3332  2023-07-15   421.43\n",
+       "3333  2023-07-22   420.74\n",
+       "3334  2023-07-29   420.88\n",
+       "3335  2023-08-05   420.39\n",
+       "3336  2023-08-12   420.30\n",
+       "3337  2023-08-19   418.96\n",
+       "3338  2023-08-26   418.84\n",
+       "3339  2023-09-02   418.50\n",
+       "3340  2023-09-09   418.28\n",
+       "3341  2023-09-16   418.52\n",
+       "3342  2023-09-23   417.77\n",
+       "3343  2023-09-30   417.89\n",
+       "3344  2023-10-07   418.10\n",
+       "3345  2023-10-14   418.82\n",
+       "3346  2023-10-21   418.85\n",
+       "3347  2023-10-28   418.62\n",
+       "3348  2023-11-04   419.07\n",
+       "3349  2023-11-11   419.41\n",
+       "3350  2023-11-18   421.18\n",
+       "3351  2023-11-25   421.22\n",
+       "3352  2023-12-02   420.28\n",
+       "3353  2023-12-09   421.23\n",
+       "3354  2023-12-16   422.57\n",
+       "3355  2023-12-23   422.06\n",
+       "3356  2023-12-30   421.76\n",
+       "\n",
+       "[3357 rows x 2 columns]"
+      ]
+     },
+     "execution_count": 24,
+     "metadata": {},
+     "output_type": "execute_result"
     }
    ],
    "source": [
-    "raw_data = pd.read_csv(data_file, skiprows=1)\n",
+    "raw_data = pd.read_csv(data_url, skiprows=44)\n",
     "raw_data"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 14,
+   "execution_count": 19,
    "metadata": {},
    "outputs": [
     {
@@ -85,7 +472,7 @@
      "traceback": [
       "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
       "\u001b[0;31mParserError\u001b[0m                               Traceback (most recent call last)",
-      "\u001b[0;32m<ipython-input-14-46808fbde0cb>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mraw_data\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mpd\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mread_csv\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mdata_file\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      2\u001b[0m \u001b[0mraw_data\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m<ipython-input-19-46808fbde0cb>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mraw_data\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mpd\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mread_csv\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mdata_file\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      2\u001b[0m \u001b[0mraw_data\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
       "\u001b[0;32m/opt/conda/lib/python3.6/site-packages/pandas/io/parsers.py\u001b[0m in \u001b[0;36mparser_f\u001b[0;34m(filepath_or_buffer, sep, delimiter, header, names, index_col, usecols, squeeze, prefix, mangle_dupe_cols, dtype, engine, converters, true_values, false_values, skipinitialspace, skiprows, nrows, na_values, keep_default_na, na_filter, verbose, skip_blank_lines, parse_dates, infer_datetime_format, keep_date_col, date_parser, dayfirst, iterator, chunksize, compression, thousands, decimal, lineterminator, quotechar, quoting, escapechar, comment, encoding, dialect, tupleize_cols, error_bad_lines, warn_bad_lines, skipfooter, skip_footer, doublequote, delim_whitespace, as_recarray, compact_ints, use_unsigned, low_memory, buffer_lines, memory_map, float_precision)\u001b[0m\n\u001b[1;32m    707\u001b[0m                     skip_blank_lines=skip_blank_lines)\n\u001b[1;32m    708\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 709\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0m_read\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mfilepath_or_buffer\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mkwds\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    710\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    711\u001b[0m     \u001b[0mparser_f\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m__name__\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mname\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
       "\u001b[0;32m/opt/conda/lib/python3.6/site-packages/pandas/io/parsers.py\u001b[0m in \u001b[0;36m_read\u001b[0;34m(filepath_or_buffer, kwds)\u001b[0m\n\u001b[1;32m    453\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    454\u001b[0m     \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 455\u001b[0;31m         \u001b[0mdata\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mparser\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mread\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mnrows\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    456\u001b[0m     \u001b[0;32mfinally\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    457\u001b[0m         \u001b[0mparser\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mclose\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
       "\u001b[0;32m/opt/conda/lib/python3.6/site-packages/pandas/io/parsers.py\u001b[0m in \u001b[0;36mread\u001b[0;34m(self, nrows)\u001b[0m\n\u001b[1;32m   1067\u001b[0m                 \u001b[0;32mraise\u001b[0m \u001b[0mValueError\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m'skipfooter not supported for iteration'\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m   1068\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m-> 1069\u001b[0;31m         \u001b[0mret\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_engine\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mread\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mnrows\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m   1070\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m   1071\u001b[0m         \u001b[0;32mif\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0moptions\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mget\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m'as_recarray'\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
@@ -106,7 +493,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": 20,
    "metadata": {},
    "outputs": [
     {
@@ -359,7 +746,7 @@
        "41   indicated by the date in the first column.   ...                                         "
       ]
      },
-     "execution_count": 15,
+     "execution_count": 20,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -369,6 +756,42 @@
     "raw_data"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 22,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "             316.19\n",
+      "1958-03-29,        \n",
+      "1958-04-05   317.31\n",
+      "1958-04-12   317.69\n",
+      "1958-04-19   317.58\n",
+      "1958-04-26   316.48\n",
+      "1958-05-03   316.95\n"
+     ]
+    }
+   ],
+   "source": [
+    "# Cargar datos desde el archivo CSV local\n",
+    "file_path = \"https://scrippsco2.ucsd.edu/assets/data/atmospheric/stations/in_situ_co2/weekly/weekly_in_situ_co2_mlo.csv\"  # Reemplaza con la ruta correcta a tu archivo\n",
+    "\n",
+    "data_file_co2 = \"weekly_co2_in_situ_co2.csv\"\n",
+    "\n",
+    "import os\n",
+    "import urllib.request\n",
+    "if not os.path.exists(data_file):\n",
+    "    urllib.request.urlretrieve(file_path, data_file_co2)\n",
+    "\n",
+    "data_co2 = pd.read_csv(file_path, skiprows=44, sep=r'\\s+', engine='python', parse_dates=[0], index_col=[0])\n",
+    "\n",
+    "# Verificar los primeros registros de datos\n",
+    "print(data_co2.head())"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},