condition	mean	min	max
4 h after light	16.5	16.5	16.5
8 h after light	9.35	4.0	14.7
12 h after light	2.7	2.3	3.1
4 h after dark	5.15	1.9	8.4
8 h after dark	1.9	1.7	2.1
12 h after dark	21.5	4.3	38.7