C THE PARAMETER STATEMENTS CORRESPOND TO:                   
C LL = MAX. # OF DIMENSIONS HORIZONTALLY.                   
C NN = MAX # OF DIMENSIONS VERTICALLY (INCL. 8 LAYERS).     
C NFREQ = MAX. # OF FREQUENCIES AT ANY INDIVIDUAL SITE.     
C NFM = MAX. # OF DISTINCT FREQUENCIES FOR ALL SITES.       
C NSITES = MAX. # OF DISTINCT DATA SITES.                   
C FOR FORWARD, SET NP2=1 & LNI=1 & NSITES=LL.               
C FOR INVERSE, SET NP2=LN*5 AND LNI=LN.                     
      PARAMETER (LL=90)                                     
      PARAMETER (NN=121)                                    
      PARAMETER (NFREQ=37)                                  
      PARAMETER (NFM=37)                                    
      PARAMETER (LN=LL*NN)                                  
      PARAMETER (LNI=LN)                                    
      PARAMETER (NP1=LN*3)                                  
      PARAMETER (NP2=LN*5)                                  
      PARAMETER (NSITES=24)                                 
