condition	mean	min	max
4 h after light	2.2	2.2	2.2
8 h after light	12.75	3.6	21.9
12 h after light	24.3	19.1	29.5
4 h after dark	8.0	1.4	14.6
8 h after dark	8.25	1.9	14.6
12 h after dark	21.25	4.0	38.5