condition	mean	min	max
4 h after light	20.7	20.7	20.7
8 h after light	5.5	3.0	8.0
12 h after light	9.85	4.1	15.6
4 h after dark	9.35	9.2	9.5
8 h after dark	31.6	4.5	58.7
12 h after dark	12.7	3.9	21.5