condition	mean	min	max
4 h after light	7.733136666666666	7.5681	8.010589999999999
8 h after light	7.390506666666667	6.96753	7.903060000000001
12 h after light	7.0074466666666675	6.720510000000001	7.313460000000001
4 h after dark	7.5361	7.32048	7.925
8 h after dark	7.945266666666666	7.76433	8.201989999999999
12 h after dark	7.47981	7.272539999999999	7.70747