condition	mean	min	max
4 h after light	18.3962	16.9081	19.8843
8 h after light	15.55345	15.1184	15.9885
12 h after light	17.112299999999998	15.5903	18.6343
4 h after dark	21.3852	20.8061	21.9643
8 h after dark	26.77335	26.0305	27.5162
12 h after dark	24.838549999999998	24.1539	25.5232