condition	mean	min	max
4 h after light	20.7	20.7	20.7
8 h after light	35.0	33.4	36.6
12 h after light	39.25	34.5	44.0
4 h after dark	30.75	15.1	46.4
8 h after dark	28.75	18.2	39.3
12 h after dark	4.2	4.0	4.4