condition	mean	min	max
4 h after light	20.5	20.5	20.5
8 h after light	3.45	3.0	3.9
12 h after light	9.9	8.9	10.9
4 h after dark	10.15	7.2	13.1
8 h after dark	3.5	2.9	4.1
12 h after dark	31.2	14.9	47.5