\ Description of catalog columns
\ Note all flux units are relative to ab=25 zeropoint: ABMAG = 25. - 2.5*log10(fluxunits) 
|  Column Name |  Data Type  |     Units     | Description                                    |
     x_pos          real             -          x position in image 
     y_pos          real             -          y position in image 
     id           integer            -          Source number
     ra             real          degrees       J2000.0 right ascension of IRAC 3.6mu+4.5mu detected source
     dec            real          degrees       J2000.0 declination of IRAC 3.6mu+4.5mu detected source
     fXX_apN        real          ZP25AB        flux density in IRAC band XX (XX = 3.6, 4.5, 5.8, 8.0) in circular aperture N (N = 1,2,3 = 1.5",2",3" radius)    
     feXX_apN       real          ZP25AB        uncertainty in flux density in IRAC band XX in aperture N
     f36_tot        real          ZP25AB        total flux density in 3.6mu from 2" radius aperture, corrected to total using point source growth curves
     fe36_tot        real         ZP25AB        uncertainty in total flux density
     expXX          real        kiloseconds     exposure time in band XX in kiloseconds at location of source 
  flag_muxbleed   integer            -          set to 1 of source was corrected for muxbleed
  flag_blended    integer            -          set to 1 if SExtractor detection isophote (the "segmentation map") blends with a neighboring source