condition	mean	min	max
4 h after light	19.7	19.7	19.7
8 h after light	40.0	27.5	52.5
12 h after light	43.3	40.4	46.2
4 h after dark	12.25	11.7	12.8
8 h after dark	15.35	4.7	26.0
12 h after dark	29.05	7.2	50.9