Fluctuation Of Sleeping Hours

6/3 4:40 - 8:20 [3:40]

6/4 0:25 - 9:00 [8:35]

6/5 7:20 - 9:00 [1:40]

6/6 3:40 - 12:00 [8:20]

Total for these four days = 22:15

22:15 devided by 4 is 5 strong.