condition	mean	min	max
4 h after light	7.13288	7.04577	7.221430000000001
8 h after light	6.660573333333334	6.565989999999999	6.74697
12 h after light	6.65339	6.44431	6.94526
4 h after dark	7.232706666666667	7.086760000000001	7.5021
8 h after dark	7.321613333333333	7.233689999999999	7.399489999999999
12 h after dark	7.844553333333334	7.7172	8.02931