EPSG conversion

[John Mitchell]

Hi,

Below is a gdalinfo dump and I need to know which of the listed EPSG values
I should use for:
LAYER
    PROJECTION
        "INIT=EPSG:32615"
    END

Multiple EPSG codes are listed below and I am guessing that it is 32615 from
AUTHORITY["EPSG","4326"]],

Driver: GTiff/GeoTIFF
Size is 9102, 9268
Coordinate System is:
PROJCS["WGS 84 / UTM zone 15N",
    GEOGCS["WGS 84",
        DATUM["WGS_1984",
            SPHEROID["WGS 84",6378137,298.2572235630016,
                AUTHORITY["EPSG","7030"]],
            AUTHORITY["EPSG","6326"]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433],
        AUTHORITY["EPSG","4326"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",-93],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","32615"]]
Origin = (778859.800149363470000,3316677.809611396900000)
Pixel Size = (1.000000000000000,-1.000000000000000 )
Metadata:
  AREA_OR_POINT=Area
  TIFFTAG_IMAGEDESCRIPTION=Space Imaging
  TIFFTAG_DATETIME=2002:12:17 22:21:17
  TIFFTAG_XRESOLUTION=1
  TIFFTAG_YRESOLUTION=1
  TIFFTAG_RESOLUTIONUNIT=1 (unitless)
Corner Coordinates:
Upper Left  (  778859.800, 3316677.810) ( 90d 6'38.81"W, 29d56'57.43"N)
Lower Left  (  778859.800, 3307409.810) ( 90d 6'47.49"W, 29d51'56.70"N)
Upper Right (  787961.800, 3316677.810) ( 90d 0'59.69"W, 29d56'49.87"N)
Lower Right (  787961.800, 3307409.810) ( 90d 1'8.66"W, 29d51'49.17"N)
Center      (  783410.800, 3312043.810) ( 90d 3' 53.66"W, 29d54'23.32"N)
Band 1 Block=9102x1 Type=UInt16, ColorInterp=Red
Band 2 Block=9102x1 Type=UInt16, ColorInterp=Green
Band 3 Block=9102x1 Type=UInt16, ColorInterp=Blue

Thanks,
-- 
John J. Mitchell
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