condition	mean	min	max
4 h after light	7.591546666666667	7.239960000000001	7.977860000000001
8 h after light	7.120633333333334	6.721210000000001	7.47602
12 h after light	6.869023333333333	6.579389999999999	7.21448
4 h after dark	6.9629433333333335	6.40876	7.277760000000001
8 h after dark	7.11675	6.737239999999999	7.539630000000001
12 h after dark	7.4967	7.11647	7.73545