condition	mean	min	max
4 h after light	11.5	11.5	11.5
8 h after light	22.5	4.8	40.2
12 h after light	12.2	9.5	14.9
4 h after dark	17.0	8.4	25.6
8 h after dark	23.45	20.9	26.0
12 h after dark	37.05	4.0	70.1