condition	mean	min	max
4 h after light	4.3	4.3	4.3
8 h after light	4.5	3.5	5.5
12 h after light	4.45	3.2	5.7
4 h after dark	16.15	2.9	29.4
8 h after dark	10.45	5.3	15.6
12 h after dark	14.4	3.3	25.5