condition	mean	min	max
4 h after light	67.9	67.9	67.9
8 h after light	69.75	66.4	73.1
12 h after light	68.7	67.7	69.7
4 h after dark	82.6	69.1	96.1
8 h after dark	67.9	63.5	72.3
12 h after dark	55.8	39.3	72.3