fix plotted channels (was S11, should be s21)

Python_script/example_sweeps.txt

-30.0 40 300 30
+25.0 40 30 30
 

Python_script/prototype.py

@@ -272,9 +272,9 @@ class Measurements:
         fig, ax1 = plt.subplots(2, figsize=(12, 10))
         fig.suptitle("Graphical representation of chamber output", color="red")
 
-        path_collection01 = ax1[0].scatter(csv_data.TIMESTAMP, csv_data.S11_PHASE, c='red', marker='<', label='Phase')
+        path_collection01 = ax1[0].scatter(csv_data.TIMESTAMP, csv_data.S21_PHASE, c='red', marker='<', label='Phase')
         twin2_0 = ax1[0].twinx()
-        path_collection02 = twin2_0.scatter(csv_data.TIMESTAMP, csv_data.S11_MAGNITUDE, c='#3120E0', marker='4',
+        path_collection02 = twin2_0.scatter(csv_data.TIMESTAMP, csv_data.S21_MAGNITUDE, c='#3120E0', marker='4',
                                             label='Magnitude')
         twin3_0 = ax1[0].twinx()
         twin3_0.spines['right'].set_position(('outward', 40))