Summary statistics for SPCH_PTHLGST_AUDLGST_CNT variable in pos2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
SP~DLGST_CNT |     41,279    .6854563    21.38027          0       4000

by Jean Roth , jroth@nber.org , 19 Apr 2019