condition	mean	min	max
4 h after light	7.926625	7.16135	8.6919
8 h after light	23.442	19.6968	27.1872
12 h after light	17.36505	16.1431	18.587
4 h after dark	16.060166666666667	12.264	18.028
8 h after dark	6.95282	4.95151	8.48919
12 h after dark	7.501393333333333	6.42043	8.73299