condition	mean	min	max
4 h after light	13.80685	11.7098	15.9039
8 h after light	9.13973	8.90351	9.37595
12 h after light	9.296325	8.64582	9.94683
4 h after dark	19.228	19.1595	19.2965
8 h after dark	20.97055	20.4758	21.4653
12 h after dark	21.8542	21.2301	22.4783