condition	mean	min	max
4 h after light	1.8	1.8	1.8
8 h after light	2.7	1.9	3.5
12 h after light	2.8	1.9	3.7
4 h after dark	10.45	2.4	18.5
8 h after dark	3.35	3.1	3.6
12 h after dark	4.4	2.2	6.6