Refactor datetime variable names in app.py for clarity: Rename current_time_utc to current_time and time_24_hours_ago_utc to time_24_hours_ago.

app.py

@@ -98,10 +98,10 @@ def run_troubleshooting():
         #current_time = datetime.datetime.now(datetime.timezone.utc)
         #time_24_hours_ago = current_time - datetime.timedelta(hours=24)
         # 現在のUTC時刻
-        current_time_utc = datetime.datetime.now(datetime.timezone.utc)
+        current_time = datetime.datetime.now(datetime.timezone.utc)
 
         # 24時間前のUTC
-        time_24_hours_ago_utc = current_time_utc - datetime.timedelta(hours=24)
+        time_24_hours_ago = current_time_utc - datetime.timedelta(hours=24)
 
         # Filter sensor data for the last 24 hours
         # Use the globally available sensor_df and filter it each time the function is called