condition	mean	min	max
4 h after light	1.7	1.7	1.7
8 h after light	16.85	15.5	18.2
12 h after light	21.65	12.7	30.6
4 h after dark	35.75	22.5	49.0
8 h after dark	8.95	5.0	12.9
12 h after dark	17.6	7.1	28.1