X = 17898  X = 17867  X = 17837  X = 17806  X = 17776  X = 17745  X = 17714  X = 17684  X = 17653  X = 17623  X = 17592  X = 17563  Y = 120  Y = 100  Y = 80  Y = 60  Y = 40  Y = 20  Y = 0
The SGPlot Procedure