   From  :    To
         :   2200000   2000000   1800000   1600000   1300000   1000000 
  2200000:         0      1326       736       828      1065       613 
  2000000:      1343         0       807      1019      1564       763 
  1800000:       739       777         0      1522      2783      1692 
  1600000:       740       896      1493         0     18259      6197 
  1300000:      1080      1475      2544     17464         0     19380 
  1000000:       665      1022      1934      6752     18272         0 
