, with the contents of three lines changed to

v1= 35.00 ; Low  value for isopleths, disregarded when  nv  is 0 or 1
v2= 35.085; High value for isopleths, disregarded when  nv  is 0 or 1
nv= 17    ; No. of isopleths, there will be  nv+1  colors

in order to specify the use of contours and colors.


Example 5:
As Example 4, but with even more contours and colors

The figure below was made by issuing the same command as in Example 3, after the file userdef.ncl was copied from