condition	mean	min	max
4 h after light	4.8	4.8	4.8
8 h after light	23.45	18.7	28.2
12 h after light	4.05	2.1	6.0
4 h after dark	10.5	2.0	19.0
8 h after dark	6.5	2.6	10.4
12 h after dark	11.9	2.2	21.6