condition	mean	min	max
4 h after light	7.7	7.7	7.7
8 h after light	31.95	28.9	35.0
12 h after light	48.45	39.1	57.8
4 h after dark	56.3	25.9	86.7
8 h after dark	49.2	48.7	49.7
12 h after dark	34.05	30.2	37.9