condition	mean	min	max
4 h after light	3.8	3.8	3.8
8 h after light	10.8	4.9	16.7
12 h after light	44.9	24.5	65.3
4 h after dark	24.1	19.5	28.7
8 h after dark	7.1	3.0	11.2
12 h after dark	9.75	1.9	17.6