condition	mean	min	max
4 h after light	17.525316	15.424165	19.626467
8 h after light	14.8048755	14.63478	14.974971
12 h after light	14.962988	14.88118	15.044796
4 h after dark	12.531955	10.939835	14.124075
8 h after dark	18.1350625	16.897178	19.372947
12 h after dark	16.64824	16.64824	16.64824