G02DCF Example Program Data
 12 4  'U' 'Z'                :: N, M, MEAN, WEIGHT
1.0 0.0 0.0 0.0 33.63
0.0 0.0 0.0 1.0 39.62
0.0 1.0 0.0 0.0 38.18
0.0 0.0 1.0 0.0 41.46
0.0 0.0 0.0 1.0 38.02
0.0 1.0 0.0 0.0 35.83
0.0 0.0 0.0 1.0 35.99
1.0 0.0 0.0 0.0 36.58
0.0 0.0 1.0 0.0 42.92
1.0 0.0 0.0 0.0 37.80
0.0 0.0 1.0 0.0 40.43
1.0 1.0 1.0 1.0 37.89        :: End of X, Y
 1   1   1   1               :: ISX
'D'                          :: UPDATE (delete observation)
1.0 1.0 1.0 1.0 37.89        :: X and Y for observation to be deleted
'A'                          :: UPDATE (add observation)
0.0 1.0 0.0 0.0 37.89        :: X and Y for observation to be added