diff --git a/module2/exo4/exercice.ipynb b/module2/exo4/exercice.ipynb
index 00a6362b4e54c6340305f06cc1bd02c17171a35f..10839a36e0bce9f66ab1cad1a4ca1d05959bf04e 100644
--- a/module2/exo4/exercice.ipynb
+++ b/module2/exo4/exercice.ipynb
@@ -9,7 +9,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 24,
+   "execution_count": 102,
    "metadata": {},
    "outputs": [
     {
@@ -17,10 +17,10 @@
      "output_type": "stream",
      "text": [
       "['\\ufeffFormulation', 'Référence', '70%C', '50%C', '30%C']\n",
-      "['Rc24h', '24.7', '19.8', '14.5', '9.9']\n",
-      "['Rc7j', '60.2', '55.7', '39.4', '28.6']\n",
-      "['Rc28j', '81.6', '75.6', '55.8', '42.7']\n",
-      "['Rc90j', '87.5', '79.8', '61.2', '49.8']\n"
+      "['Rc24h', '24.70', '19.80', '14.50', '9.90']\n",
+      "['Rc7j', '60.20', '55.70', '39.40', '28.60']\n",
+      "['Rc28j', '81.60', '75.60', '55.80', '42.70']\n",
+      "['Rc90j', '87.50', '79.80', '61.20', '49.80']\n"
      ]
     }
    ],
@@ -35,6 +35,31 @@
     "    print(row)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 104,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "24.70\n",
+      "60.20\n",
+      "81.60\n",
+      "87.50\n"
+     ]
+    }
+   ],
+   "source": [
+    "import csv\n",
+    "fname = \"DonneesExo.csv\"\n",
+    "with open(fname,newline='') as file:\n",
+    "    reader = csv.DictReader(file)\n",
+    "    for row in reader:\n",
+    "        print(row['Référence'])"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 77,