Summary statistics for spch_pthlgst_audlgst_cnt variable in pos2017 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
sp~dlgst_cnt |     38,066    .7080644    21.99734          0       4000

by Jean Roth , jroth@nber.org , 9 Jan 2018