condition	mean	min	max
4 h after light	11.35265	10.3328	12.3725
8 h after light	9.536405	9.17395	9.89886
12 h after light	14.588799999999999	13.2621	15.9155
4 h after dark	16.92465	16.2378	17.6115
8 h after dark	18.5282	18.1875	18.8689
12 h after dark	17.0923	16.8497	17.3349