condition	mean	min	max
4 h after light	6.5388399999999995	6.44313	6.72147
8 h after light	7.161843333333333	6.9422	7.30254
12 h after light	7.04702	6.9806	7.14527
4 h after dark	7.2404	7.10182	7.3132
8 h after dark	7.306783333333334	7.24713	7.39998
12 h after dark	6.976380000000001	6.83542	7.118510000000001