condition	mean	min	max
4 h after light	6.946596666666667	6.84057	7.01606
8 h after light	6.8389	6.6266300000000005	6.94803
12 h after light	6.95816	6.634860000000001	7.1310899999999995
4 h after dark	6.758823333333334	6.24859	7.052860000000001
8 h after dark	6.735296666666667	6.38943	6.964060000000001
12 h after dark	6.8671966666666675	6.658810000000001	7.0392