condition	mean	min	max
4 h after light	7.3	7.3	7.3
8 h after light	18.1	4.5	31.7
12 h after light	24.65	5.0	44.3
4 h after dark	78.25	66.8	89.7
8 h after dark	47.8	38.5	57.1
12 h after dark	64.35	61.4	67.3