condition	mean	min	max
0 h after light	18.04995	17.6558	18.4441
4 h after light	10.38871	8.88892	11.8885
8 h after light	8.551300000000001	7.14471	9.95789
4 h after dark	13.316	11.1354	15.4966
8 h after dark	15.03765	13.5594	16.5159
12 h after dark	14.09345	13.2739	14.913