   From  :    To
         :   2200000   2000000   1800000   1600000   1300000   1000000 
  2200000:         0      1272       816       874      1021       574 
  2000000:      1360         0       863       929      1374       621 
  1800000:       764       779         0      1598      3025      1178 
  1600000:       752       959      1523         0     15799      5046 
  1300000:      1034      1390      2698     15052         0     25268 
  1000000:       646       747      1444      5626     24224         0 
