condition	mean	min	max
4 h after light	18.3	18.3	18.3
8 h after light	14.6	1.7	27.5
12 h after light	18.1	15.9	20.3
4 h after dark	20.7	11.7	29.7
8 h after dark	16.0	15.0	17.0
12 h after dark	15.75	9.5	22.0