condition	mean	min	max
4 h after light	8.338523333333333	8.24266	8.472539999999999
8 h after light	8.251806666666667	8.226360000000001	8.28693
12 h after light	8.26207	8.13743	8.45682
4 h after dark	8.288713333333334	8.286010000000001	8.2918
8 h after dark	8.12096	8.038739999999999	8.17723
12 h after dark	8.0869	7.9508399999999995	8.16751