condition	mean	min	max
4 h after light	7.41781	7.338710000000001	7.45948
8 h after light	7.249303333333334	7.13543	7.34553
12 h after light	7.538726666666666	7.43288	7.59761
4 h after dark	7.246793333333334	7.191560000000001	7.335539999999999
8 h after dark	7.324296666666666	7.295030000000001	7.3684199999999995
12 h after dark	7.174806666666666	7.1627600000000005	7.184419999999999