          ht    n  nvar
  158.489319    3     3
  199.526231    8     8
  251.188643   37    37
  316.227766   68    68
  398.107171  111   111
  501.187234  252   252
  630.957344  243   243
  794.328235  206   206
 1000.000000  119   119
 1258.925412   53    53
 1584.893192   13    13
 1995.262315    2     2
 2511.886432    0     0
