condition	mean	min	max
4 h after light	17.5012	15.109	19.8934
8 h after light	9.34849	8.91876	9.77822
12 h after light	9.102665	8.67128	9.53405
4 h after dark	8.323976666666667	7.57784	9.54797
8 h after dark	10.226413333333333	9.12154	10.9458
12 h after dark	15.816633333333332	14.5086	16.6622