condition	mean	min	max
4 h after light	12.4	12.4	12.4
8 h after light	6.35	6.2	6.5
12 h after light	14.05	3.1	25.0
4 h after dark	21.0	6.9	35.1
8 h after dark	13.95	5.4	22.5
12 h after dark	12.25	3.8	20.7