Summary statistics for spch_pthlgst_audlgst_cnt variable in pos1997 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
sp~dlgst_cnt |     89,140    .2537863    21.47859          0       5000

by Jean Roth , jroth@nber.org , 17 May 2017