Define new axis characteristics. AXIS1 suppresses the axis label and specifies month abbreviations for the major tick mark labels. AXIS2 specifies a two-line axis label and scales the axis to show major tick marks at every 10 degrees from 0 to 100 degrees.

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  "Fahrenheit")
      order=(0 to 100 by 10)
      ;