Fix notebook

Author: birgits

example/basic_example.ipynb

@@ -182,7 +182,7 @@
     "    'hub_height': 105,  # in m\n",
     "    'rotor_diameter': 90,  # in m\n",
     "    'power_curve': pd.DataFrame(\n",
-    "            data={'values': [p * 1000 for p in [\n",
+    "            data={'power': [p * 1000 for p in [\n",
     "                      0.0, 26.0, 180.0, 1500.0, 3000.0, 3000.0]],  # in W\n",
     "                  'wind_speed': [0.0, 3.0, 5.0, 10.0, 15.0, 25.0]})  # in m/s\n",
     "    }  \n",
@@ -313,20 +313,20 @@
     "if plt:\n",
     "    if e126.power_coefficient_curve is not None:\n",
     "        e126.power_coefficient_curve.plot(\n",
-    "            x='wind_speed', y='values', style='*',\n",
+    "            x='wind_speed', y='power coefficient', style='*',\n",
     "            title='Enercon E126 power coefficient curve')\n",
     "        plt.show()\n",
     "    if e126.power_curve is not None:\n",
-    "        e126.power_curve.plot(x='wind_speed', y='values', style='*',\n",
+    "        e126.power_curve.plot(x='wind_speed', y='power', style='*',\n",
     "                              title='Enercon E126 power curve')\n",
     "        plt.show()\n",
     "    if my_turbine.power_coefficient_curve is not None:\n",
     "        my_turbine.power_coefficient_curve.plot(\n",
-    "            x='wind_speed', y='values', style='*',\n",
+    "            x='wind_speed', y='power coefficient', style='*',\n",
     "            title='myTurbine power coefficient curve')\n",
     "        plt.show()\n",
     "    if my_turbine.power_curve is not None:\n",
-    "        my_turbine.power_curve.plot(x='wind_speed', y='values', style='*',\n",
+    "        my_turbine.power_curve.plot(x='wind_speed', y='power', style='*',\n",
     "                                    title='myTurbine power curve')\n",
     "        plt.show()"
    ]