condition	mean	min	max
4 h after light	3.5	3.5	3.5
8 h after light	4.4	2.7	6.1
12 h after light	5.15	4.4	5.9
4 h after dark	16.75	2.0	31.5
8 h after dark	4.55	2.9	6.2
12 h after dark	4.35	2.6	6.1