Usage Notes:
  To force a data source use plot_soundings.php?source=xx
           where xx is:
                    uw = University of Wisconsin
                unisys = Unisys
                   cod = College of DuPage
            local_file = a local file who's name is specified by &name=hhhhZ_dd_MMM_yy.txt

  Low level files may be adjusted left or right using the following switch:
    plot_soundings_php?range=<temperature_range> where <temperature_range> is:
                   hot = right edge 110F 
                  warm = right edge 100F 
                  cool = left edge 25F 
                  cold = left edge 15F 

    (default value for <temperature_range> is set in file "range.txt")

Saving image KPDX_1200Z_05_APR_25.png at Sun, 06 Apr 2025 02:17:54 +0000.  (Source: University of Washington)


calculating center...
temp_range = auto
temp_center = 4.4C (39.92F)
temp_constant = 7002 
temp_range = auto

saving ./images/PDX_to_700mb.png at Sun, 06 Apr 2025 02:17:55 +0000

Saving PDX_to_700mb.png...