condition	mean	min	max
4 h after light	23.3	23.3	23.3
8 h after light	12.7	3.9	21.5
12 h after light	8.55	4.9	12.2
4 h after dark	2.35	2.0	2.7
8 h after dark	2.4	2.0	2.8
12 h after dark	2.75	2.2	3.3