Frequencies for scipcard2ip variable in hvbp_scip_05_28_2015 dataset :

  SCIP-Card-2 |
  Improvement |
       Points |      Freq.     Percent        Cum.
--------------+-----------------------------------
           0  |      1,131       36.79       36.79
           1  |         67        2.18       38.97
           2  |         81        2.64       41.61
           3  |        103        3.35       44.96
           4  |        116        3.77       48.73
           5  |        144        4.68       53.42
           6  |        165        5.37       58.78
           7  |        206        6.70       65.48
           8  |        164        5.34       70.82
           9  |        532       17.31       88.13
Not Available |        365       11.87      100.00
--------------+-----------------------------------
        Total |      3,074      100.00

by Jean Roth , jroth@nber.org , 16 Nov 2016