condition	mean	min	max
4 h after light	19.6	19.6	19.6
8 h after light	11.5	7.2	15.8
12 h after light	38.6	15.4	61.8
4 h after dark	21.0	5.9	36.1
8 h after dark	11.55	8.6	14.5
12 h after dark	32.45	11.8	53.1