condition	mean	min	max
4 h after light	2.3	2.3	2.3
8 h after light	4.6	2.0	7.2
12 h after light	1.9	1.3	2.5
4 h after dark	22.55	3.2	41.9
8 h after dark	3.1	0.9	5.3
12 h after dark	1.75	1.2	2.3