condition	mean	min	max
4 h after light	7.3	7.3	7.3
8 h after light	40.25	18.2	62.3
12 h after light	66.9	64.7	69.1
4 h after dark	73.5	72.8	74.2
8 h after dark	76.05	57.3	94.8
12 h after dark	47.2	38.8	55.6