diff --git a/environmental_sensors.py b/environmental_sensors.py
index 8efd705b0cf9ed17e4da3b86e553e998f189e4db..cf25f507ec240febcfe301405ab90a12b46f7291 100644
--- a/environmental_sensors.py
+++ b/environmental_sensors.py
@@ -19,8 +19,8 @@ def get_data():
     temp_humidity = []
     pressure = []
     temp_pressure = []
-    # Store sensor values every second during one hour
-    for _ in range(3600):
+    # Store sensor values every second during one minute
+    for _ in range(60):
         humidity.append(sense.get_humidity())
         temp_humidity.append(sense.get_temperature_from_humidity())
         pressure.append(sense.get_pressure())
@@ -29,8 +29,8 @@ def get_data():
 
     #print("Humidity sensor : {} %rH , {} °C".format(humidity, temp_humidity))
     #print("Pressure sensor : {} Millibars , {} °C".format(pressure, temp_pressure))
-    # Get the mean value during the hour
-    return [(datetime.now()-timedelta(minutes=30)).timestamp(),
+    # Get the mean value during the minute
+    return [(datetime.now()-timedelta(seconds=30)).timestamp(),
             float_mean(humidity),
             float_mean(temp_humidity),
             float_mean(pressure),