condition	mean	min	max
4 h after light	21.8	21.8	21.8
8 h after light	3.05	2.5	3.6
12 h after light	2.75	2.5	3.0
4 h after dark	5.0	4.0	6.0
8 h after dark	29.65	25.4	33.9
12 h after dark	9.0	3.8	14.2