condition	mean	min	max
4 h after light	7.2405800000000005	7.21351	7.25517
8 h after light	7.19874	7.146	7.24477
12 h after light	7.344256666666666	7.2800199999999995	7.47205
4 h after dark	7.19477	6.959569999999999	7.42703
8 h after dark	7.29887	7.07722	7.473489999999999
12 h after dark	7.333640000000001	7.161510000000001	7.436780000000001