condition	mean	min	max
4 h after light	7.325913333333334	7.257860000000001	7.38082
8 h after light	7.51185	7.28555	7.6250800000000005
12 h after light	7.43885	7.1296	7.83652
4 h after dark	7.30356	7.223910000000001	7.40402
8 h after dark	7.1754500000000005	6.8456399999999995	7.402480000000001
12 h after dark	7.396920000000001	7.250960000000001	7.56168