condition	mean	min	max
4 h after light	17.893	16.51083	20.19075
8 h after light	12.29318	10.84493	14.89974
12 h after light	9.665010333333333	6.895695	12.83019
16 h after light	10.691503	8.143228	14.09551
4 h after dark	16.229223333333334	13.992460000000001	20.31697
8 h after dark	11.016546666666667	10.38926	12.20926