condition	mean	min	max
4 h after light	8.3	8.3	8.3
8 h after light	15.35	8.7	22.0
12 h after light	10.4	9.9	10.9
4 h after dark	19.75	14.3	25.2
8 h after dark	12.3	10.1	14.5
12 h after dark	17.65	13.7	21.6