condition	mean	min	max
4 h after light	19.1132	16.8635	21.3629
8 h after light	15.53765	15.2036	15.8717
12 h after light	18.842399999999998	16.4605	21.2243
4 h after dark	27.72185	27.2804	28.1633
8 h after dark	29.50545	28.6099	30.401
12 h after dark	25.6579	25.4642	25.8516