condition	mean	min	max
4 h after light	12.1	12.1	12.1
8 h after light	13.05	11.5	14.6
12 h after light	51.55	39.9	63.2
4 h after dark	34.55	16.5	52.6
8 h after dark	27.45	25.4	29.5
12 h after dark	29.25	12.7	45.8