Frequencies for scipcard2ip variable in hvbp_scip_02_18_2015 dataset :

  SCIP-Card-2 |
  Improvement |
       Points |      Freq.     Percent        Cum.
--------------+-----------------------------------
           0  |      1,136       36.84       36.84
           1  |         67        2.17       39.01
           2  |         81        2.63       41.63
           3  |        103        3.34       44.97
           4  |        117        3.79       48.77
           5  |        144        4.67       53.44
           6  |        166        5.38       58.82
           7  |        206        6.68       65.50
           8  |        165        5.35       70.85
           9  |        533       17.28       88.13
Not Available |        366       11.87      100.00
--------------+-----------------------------------
        Total |      3,084      100.00

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