condition	mean	min	max
4 h after light	3.1	3.1	3.1
8 h after light	12.65	4.0	21.3
12 h after light	3.05	2.5	3.6
4 h after dark	1.15	0.8	1.5
8 h after dark	3.15	2.8	3.5
12 h after dark	1.0	0.9	1.1