Summary statistics for count1984_99 dataset :

by Jean Roth , jroth@nber.org , 17 Feb 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       fyear |         16      2006.5    4.760952       1999       2014
    rptcount |         16    1808.625    746.1921        204       2821
  alphacount |         16    175576.2    120206.4       4656     330260
   nmrccount |         16    665963.8      339017      47756    1084872
 rollupcount |         16           0           0          0          0

by Jean Roth , jroth@nber.org , 17 Feb 2018