Summary statistics for rpsr2010q2 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 37098 6744987 52365.23 6536826 7007769 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 18 Dec 2015