condition	mean	min	max
4 h after light	7.512766666666667	7.27303	7.65406
8 h after light	8.582263333333334	8.475769999999999	8.690339999999999
12 h after light	8.222826666666666	8.14532	8.36664
4 h after dark	7.762003333333333	7.70633	7.80377
8 h after dark	7.506430000000001	7.2405800000000005	7.766560000000001
12 h after dark	6.64863	6.51624	6.799930000000001