condition	mean	min	max
4 h after light	5.5	5.5	5.5
8 h after light	34.55	34.5	34.6
12 h after light	20.85	20.4	21.3
4 h after dark	15.75	6.5	25.0
8 h after dark	11.0	9.4	12.6
12 h after dark	11.8	8.4	15.2