> xeasy
> Contour plot         [cp]
>  
> level and bas 1 -4132.708496
> level and bas 2 -2952.077637
> level and bas 3 -2108.769775
> level and bas 4 -1506.407104
> level and bas 5 -1076.147949
> level and bas 6 -768.819946
> level and bas 7 -549.299988
> level and bas 8 -392.500000
> level and bas 9 -280.500000
> level and bas 10 -200.500000
> level and bas 11 200.500000
> level and bas 12 280.500000
> level and bas 13 392.500000
> level and bas 14 549.299988
> level and bas 15 768.819946
> level and bas 16 1076.147949
> level and bas 17 1506.407104
> level and bas 18 2108.769775
> level and bas 19 2952.077637
> level and bas 20 4132.708496
>  
> Contour plot         [cp]
>  
> level and bas 1 -8264.916992
> level and bas 2 -5903.655273
> level and bas 3 -4217.039551
> level and bas 4 -3012.314209
> level and bas 5 -2151.795898
> level and bas 6 -1537.139893
> level and bas 7 -1098.099976
> level and bas 8 -784.500000
> level and bas 9 -560.500000
> level and bas 10 -400.500000
> level and bas 11 400.500000
> level and bas 12 560.500000
> level and bas 13 784.500000
> level and bas 14 1098.099976
> level and bas 15 1537.139893
> level and bas 16 2151.795898
> level and bas 17 3012.314209
> level and bas 18 4217.039551
> level and bas 19 5903.655273
> level and bas 20 8264.916992
>  
> Contour plot         [cp]
>  
> level and bas 1 -12397.125977
> level and bas 2 -8855.233398
> level and bas 3 -6325.309570
> level and bas 4 -4518.221191
> level and bas 5 -3227.443604
> level and bas 6 -2305.459961
> level and bas 7 -1646.899902
> level and bas 8 -1176.500000
> level and bas 9 -840.500000
> level and bas 10 -600.500000
> level and bas 11 600.500000
> level and bas 12 840.500000
> level and bas 13 1176.500000
> level and bas 14 1646.899902
> level and bas 15 2305.459961
> level and bas 16 3227.443604
> level and bas 17 4518.221191
> level and bas 18 6325.309570
> level and bas 19 8855.233398
> level and bas 20 12397.125977
>  
> Draw cursor         [dc]
> Contour plot         [cp]
>  
> level and bas 1 -14463.230469
> level and bas 2 -10331.022461
> level and bas 3 -7379.444336
> level and bas 4 -5271.174805
> level and bas 5 -3765.267578
> level and bas 6 -2689.619873
> level and bas 7 -1921.299927
> level and bas 8 -1372.500000
> level and bas 9 -980.500000
> level and bas 10 -700.500000
> level and bas 11 700.500000
> level and bas 12 980.500000
> level and bas 13 1372.500000
> level and bas 14 1921.299927
> level and bas 15 2689.619873
> level and bas 16 3765.267578
> level and bas 17 5271.174805
> level and bas 18 7379.444336
> level and bas 19 10331.022461
> level and bas 20 14463.230469
>  
> Contour plot         [cp]
>  
> level and bas 1 -20661.542969
> level and bas 2 -14758.388672
> level and bas 3 -10541.849609
> level and bas 4 -7530.035156
> level and bas 5 -5378.739746
> level and bas 6 -3842.099854
> level and bas 7 -2744.499756
> level and bas 8 -1960.499878
> level and bas 9 -1400.500000
> level and bas 10 -1000.500000
> level and bas 11 1000.500000
> level and bas 12 1400.500000
> level and bas 13 1960.499878
> level and bas 14 2744.499756
> level and bas 15 3842.099854
> level and bas 16 5378.739746
> level and bas 17 7530.035156
> level and bas 18 10541.849609
> level and bas 19 14758.388672
> level and bas 20 20661.542969
>