condition	mean	min	max
4 h after light	6.64894	6.33121	6.8194
8 h after light	7.46885	7.3304800000000006	7.540789999999999
12 h after light	7.846503333333333	7.80174	7.93295
4 h after dark	7.911616666666666	7.69487	8.06396
8 h after dark	7.85006	7.802510000000001	7.92405
12 h after dark	7.507756666666666	7.429119999999999	7.63753