2011_NAIP/UTM_County_Mosaics folder

This folder contains the Compressed County Mosaic version of the 2009 National
Agricultural Imagery Program air photos of Montana.

Each file is a MrSID image that covers a county or half of a county.  The data
are in UTM coordinates, in zone 11, 12, or 13 depending on which UTM zone
covers most of the county.

The dates the images were flown are shown in the _Naip_2009_Dates_Shapefile.zip
file in this folder.

Each image has six files associated with it:
  .sid -- this is the image file, in MrSID format
  .aux -- this is the spatial reference information file needed by older
          versions of ESRI's ArcGIS software.
  .met -- this is a text file that contains FGDC metadata describing the data
  .sid.aux.xml -- this is the spatial reference information file created by
                  current versions of ArcGIS when the file is opened.
                  Nobody should need these files, but our ArcGIS software
                  keeps putting them here.
  .sdw -- this is the georeferencing "world" file that may be required by some
          software packages.
  .txt -- this is a log file generated by the MrSID file when the USDA created
          the image mosaic.