condition	mean	min	max
4 h after light	7.841663333333334	7.61817	8.03961
8 h after light	7.091303333333333	6.8799600000000005	7.224589999999999
12 h after light	7.34171	7.27255	7.4108
4 h after dark	7.218986666666667	6.831860000000001	7.44073
8 h after dark	7.22752	7.00093	7.3633
12 h after dark	7.51125	7.37857	7.616510000000001