condition	mean	min	max
4 h after light	19.50145	18.1927	20.8102
8 h after light	18.8373	18.478	19.1966
12 h after light	21.107599999999998	20.8158	21.3994
4 h after dark	22.10285	21.3373	22.8684
8 h after dark	22.04175	21.1989	22.8846
12 h after dark	22.290100000000002	21.5977	22.9825