   From  :    To
         :   2403000   2136000   1870000   1603000 
  2403000:         0    279221    238515     80957 
  2136000:    286700         0    862871    305976 
  1870000:    230249    861060         0   2832487 
  1603000:     81743    315266   2822411         0 
