nag_surviv_logrank (g12abc) Example Program Data
51 2 0           :: n, ngrp, lfreq
  6.0  0  1
 13.0  0  1
 21.0  0  1
 30.0  0  1
 31.0  1  1
 37.0  0  1
 38.0  0  1
 47.0  1  1
 49.0  0  1
 50.0  0  1
 63.0  0  1
 79.0  0  1
 80.0  1  1
 82.0  1  1
 82.0  1  1
 86.0  0  1
 98.0  0  1
149.0  1  1
202.0  0  1
219.0  0  1
 10.0  0  2
 10.0  0  2
 12.0  0  2
 13.0  0  2
 14.0  0  2
 15.0  0  2
 16.0  0  2
 17.0  0  2
 18.0  0  2
 20.0  0  2
 24.0  0  2
 24.0  0  2
 25.0  0  2
 28.0  0  2
 30.0  0  2
 33.0  0  2
 34.0  1  2
 35.0  0  2
 37.0  0  2
 40.0  0  2
 40.0  0  2
 40.0  1  2
 46.0  0  2
 48.0  0  2
 70.0  1  2
 76.0  0  2
 81.0  0  2
 82.0  0  2
 91.0  0  2
112.0  0  2
181.0  0  2      :: t,ic,grp