Summary statistics for spch_pthlgst_audlgst_cnt variable in pos2014 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
sp~dlgst_cnt |     36,865    .6674605    22.32977          0       4000

by Jean Roth , jroth@nber.org , 26 Jan 2016