condition	mean	min	max
0 h after light	19.42915	18.7793	20.079
4 h after light	10.8214	10.2113	11.4315
8 h after light	13.882249999999999	13.7558	14.0087
4 h after dark	16.61325	16.1129	17.1136
8 h after dark	18.50175	18.1131	18.8904
12 h after dark	18.6262	17.6721	19.5803