condition	mean	min	max
4 h after light	63.6	63.6	63.6
8 h after light	31.15	14.8	47.5
12 h after light	50.05	42.6	57.5
4 h after dark	58.25	33.5	83.0
8 h after dark	60.6	60.1	61.1
12 h after dark	49.45	48.1	50.8