condition	mean	min	max
4 h after light	4.5	4.5	4.5
8 h after light	17.7	16.5	18.9
12 h after light	7.7	3.4	12.0
4 h after dark	27.85	7.5	48.2
8 h after dark	6.95	4.0	9.9
12 h after dark	3.3	2.3	4.3