Table 8.

Summation of columns of heat maps.

Sensors	First Training	Second Training	Third Training	Fourth Training	Fifth Training	Mean
Screen usage	16.75	17.07	18.89	20.02	18.76	18.30
Light sensor	13.50	13.95	13.86	12.69	12.61	13.32
Bluetooth	13.24	14.53	12.72	12.81	11.79	13.02
Heart rate	13.78	13.82	13.43	11.96	12.67	13.13
Activity	13.90	13.58	12.56	12.11	13.00	13.03
Notification	14.30	13.61	15.52	16.92	16.83	15.44
Charger on or off	14.49	13.41	12.98	13.45	14.32	13.73