Define axis characteristics. In the AXIS2 and AXIS3 statements, the ORDER= option controls the scaling of the axes. Both axes represent exactly the same range of temperature, and the distance between the major tick marks on both axes represent an equivalent quantity of degrees (10 for centigrade and 18 for Fahrenheit).

axis1 label=none
      value=( "JAN" "FEB" "MAR" "APR" "MAY" "JUN"
            "JUL" "AUG" "SEP" "OCT" "NOV" "DEC")
      order=(1 to 12 by 1)
      offset=(2)
      ;
axis2 label=( "Degrees" justify=right " Centigrade")
      order=(-20 to 30 by 10)

      ;
axis3 label=( "Degrees" justify=left "Fahrenheit")
      order=(-4 to 86 by 18)

;