condition	mean	min	max
4 h after light	3.9	3.9	3.9
8 h after light	26.9	15.3	38.5
12 h after light	51.25	40.6	61.9
4 h after dark	22.5	10.9	34.1
8 h after dark	36.0	32.1	39.9
12 h after dark	36.75	30.2	43.3