condition	mean	min	max
4 h after light	6.241265	6.18253	6.3
8 h after light	7.3533550000000005	6.75972	7.94699
12 h after light	14.5134	14.0417	14.9851
4 h after dark	21.8461	21.358	22.686
8 h after dark	16.6684	16.0129	17.2103
12 h after dark	10.720943333333333	9.84733	11.465