condition	mean	min	max
4 h after light	7.60182	6.9595899999999995	8.01523
8 h after light	7.701363333333333	7.010789999999999	8.17789
12 h after light	7.7440999999999995	7.27101	8.02934
4 h after dark	7.784256666666667	7.259060000000001	8.22635
8 h after dark	7.589339999999999	6.919739999999999	8.141689999999999
12 h after dark	7.675713333333333	7.168489999999999	7.98035