FDC   2   6710    0 4203163  78196738  0152EVENT  0DB   0DB   X20  .5HZ
 FFC [ FIX   XOFF  YOFF  ZOFF  CALOFF 1977    932814    .12903473+05    
 HFC         1 1   0 1   2 0   2 1   2 0   2 1   4 0   2 0   1 0   2 2   0 0   2 0  
 GHC [   1 0   1 0   1 0   1 0   0 0   1 0   2 0   1 0   2 1   1 1   0 0   1 0
 GGC ]   2 0   1 0   1 0   1 0   0 0   1 0   2 0   1 0   1 0   0 0   1 0   1 0
 DGC     2 0   0 0   1 0   0 0   1 0   1 0   1 0   0 0   1 0