condition	mean	min	max
4 h after light	7.503690000000001	7.292960000000001	7.620260000000001
8 h after light	7.78073	7.51968	7.937460000000001
12 h after light	7.5372933333333325	7.462289999999999	7.622139999999999
4 h after dark	7.7576366666666665	7.5216899999999995	7.955360000000001
8 h after dark	7.903363333333333	7.709510000000001	8.1131
12 h after dark	7.969480000000001	7.89078	8.09645