FAC   2   3730    0 4491319  77705901  0 21NORMAL 0DB   0DB   X20  4.HZ
 FFC [ FIX   XOFF  YOFF  ZOFF  CALOFF 1977   1704854    .79605995+05    
 BFC         4 0   4 0   5 0   4 0   3 0   4 0