condition	mean	min	max
4 h after light	7.5389100000000004	7.212739999999999	7.7843800000000005
8 h after light	7.440806666666667	7.3155	7.537260000000001
12 h after light	7.480379999999999	6.915889999999999	7.76519
4 h after dark	6.7608733333333335	6.25979	7.01738
8 h after dark	7.02259	6.6365300000000005	7.23735
12 h after dark	7.196156666666666	7.04822	7.31376