Summary statistics for spch_pthlgst_audlgst_cnt variable in pos2015 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
sp~dlgst_cnt |     37,288    .6875695    22.31455          0       4000

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