condition	mean	min	max
4 h after light	16.551	15.905	17.197
8 h after light	20.092399999999998	19.0171	21.1677
12 h after light	18.42595	17.8764	18.9755
4 h after dark	11.6442	11.4383	11.8501
8 h after dark	15.21895	14.9838	15.4541
12 h after dark	14.718499999999999	14.3293	15.1077