condition	mean	min	max
4 h after light	33.7	33.7	33.7
8 h after light	63.7	59.5	67.9
12 h after light	63.5	57.5	69.5
4 h after dark	60.75	57.7	63.8
8 h after dark	81.5	71.0	92.0
12 h after dark	59.6	57.1	62.1