condition	mean	min	max
4 h after light	7.25355	7.130539999999999	7.372439999999999
8 h after light	7.5203999999999995	7.264189999999999	7.72978
12 h after light	7.4802333333333335	7.17024	7.66251
4 h after dark	7.327136666666666	7.25833	7.39116
8 h after dark	7.095363333333333	6.848389999999999	7.425669999999999
12 h after dark	7.103820000000001	6.92881	7.235310000000001