condition	mean	min	max
0 h after light	21.00665	20.3717	21.6416
4 h after light	11.6359	10.6869	12.5849
8 h after light	11.6951	11.2056	12.1846
4 h after dark	14.9147	13.0635	16.7659
8 h after dark	17.5899	17.0967	18.0831
12 h after dark	18.6687	17.843	19.4944