condition	mean	min	max
4 h after light	197.4	197.4	197.4
8 h after light	126.55	120.1	133.0
12 h after light	69.45	59.2	79.7
4 h after dark	33.15	31.8	34.5
8 h after dark	50.45	34.9	66.0
12 h after dark	78.3	66.1	90.5