condition	mean	min	max
0 h after light	22.55605	20.7909	24.3212
4 h after light	16.68535	14.1241	19.2466
8 h after light	17.8243	17.5703	18.0783
4 h after dark	21.23005	20.2609	22.1992
8 h after dark	21.1418	19.6305	22.6531
12 h after dark	21.2185	20.2745	22.1625