File name : 

      GRS_spectra_V001.idl
 
  File description :

      A file containing integrated gamma ray spectra for the entire
      Moon. The individual gamma ray spectra have been integrated over
      the time and binned into 5 x 5 degree cells. Each integrated
      spectra has 512 channels.  Values are in units of counts per
      32-seconds.

  To restore these data, under IDL, run the command:
     
      restore,'GRS_spectra_V001.idl'

  You will get 1 structure :
      
      GRSPDS_SPECTRA     STRUCT    = -> <Anonymous> Array[1]

  That has the following fields :

      INDEX           INT       Array[1790]
      LAT_MIN         FLOAT     Array[1790]
      LAT_MAX         FLOAT     Array[1790]
      LON_MIN         FLOAT     Array[1790]
      LON_MAX         FLOAT     Array[1790]
      ACCEPTED        FLOAT     Array[1790, 512]
      ACC_ERR         FLOAT     Array[1790, 512]
      REJECTED        FLOAT     Array[1790, 512]
      REJ_ERR         FLOAT     Array[1790, 512]
      NSPECTRA        FLOAT     Array[1790]
      ENERGY          FLOAT     Array[512]

   The meaning of these fieds is :

      INDEX		      Equal-area pixel number
      LAT_MIN		      Minimum latitude of the pixel
      LAT_MAX		      Maximum latitude of the pixel
      LON_MIN		      Minimum longitude of the pixel
      LON_MAX		      Maximum longitude of the pixel
      ACCEPTED                Accepted spectrum (512 channels) mean
      ACC_ERR		      Accepted spectrum (512 channels) sdt deviation
      REJECTED		      Rejected spectrum (512 channels) mean
      REJ_ERR		      Rejected spectrum (512 channels) sdt deviation
      NSPECTRA		      Number of 32s-spectra in pixel
      ENERGY		      Channel to Energy correspondance
      CREATED		      Date when the file was created
      AUTHORS		      Authors names
	  				
					
Example : How to extract a rectangular array of the accepted 2.2MeV line ?

      restore,'GRS_spectra_V001.idl'
      
      % We see that : grspds_spectra.energy[123] = 2.20271
	
      data=grspds_spectra.accepted[*,123] 
      pixels={lat_min : grspds_spectra.lat_min , $
	      lat_max : grspds_spectra.lat_max , $
	      lon_min : grspds_spectra.lon_min , $
	      lon_max : grspds_spectra.lon_max}
      make_grid,data,pixels,array	      

      % array is a 720 by 360 array that correspond to 
      % 720 longitudes from -180 to +180
      % 360 latitudes from -90 t +90

      % You may display that array :

      tvscl,array