condition	mean	min	max
4 h after light	1.3	1.3	1.3
8 h after light	55.65	51.4	59.9
12 h after light	25.8	20.6	31.0
4 h after dark	38.35	10.5	66.2
8 h after dark	20.25	17.3	23.2
12 h after dark	43.55	33.6	53.5