np arrary?

app.py

@@ -684,11 +684,10 @@ def get_data_default(time_scale, exp):
             utc_time = utc_time.replace(tzinfo=pytz.utc)
             local_time = utc_time.astimezone(local_tz)
             temp["x"] = local_time.strftime("%Y-%m-%d %H:%M:%S")
-        df = pd.DataFrame(temp_graph)
-        df = df.set_index("x")
+        npArray = np.array(temp_graph)
         
         plt.figure()
-        plt.plot(df.index, df["y"])    
+        plt.plot(npArray[:,0], npArray[:,1])    
         plt.xlabel("Time")
         plt.ylabel("Temperature (C)")
         plt.title("Temperature vs Time")
@@ -749,9 +748,7 @@ def get_data_default(time_scale, exp):
             gr["x"] = local_time.strftime("%Y-%m-%d %H:%M:%S")
         df = pd.DataFrame(growth_rate_graph)
         df = df.set_index("x")
-        
-        print (df)
-        
+
         plt.figure()
         plt.plot(df.index, df["y"])
         plt.xlabel("Time")