condition	mean	min	max
4 h after light	83.9	83.9	83.9
8 h after light	69.9	66.9	72.9
12 h after light	76.6	69.8	83.4
4 h after dark	129.0	122.4	135.6
8 h after dark	107.5	102.4	112.6
12 h after dark	154.05	148.5	159.6