condition	mean	min	max
4 h after light	7.92807	7.505160000000001	8.21302
8 h after light	7.86323	7.50795	8.06991
12 h after light	8.136003333333333	8.02171	8.24452
4 h after dark	8.11259	7.894819999999999	8.25999
8 h after dark	8.174093333333332	7.9938899999999995	8.342369999999999
12 h after dark	8.23405	8.11155	8.38153