condition	mean	min	max
4 h after light	8.651785	7.90827	9.3953
8 h after light	13.2135	12.8433	13.5837
12 h after light	15.935849999999999	15.5804	16.2913
4 h after dark	27.06935	25.8866	28.2521
8 h after dark	19.203	18.9054	19.5006
12 h after dark	14.82315	14.0907	15.5556