Summary statistics for rpsr2010q3 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 37890 6938184 58250.94 6668640 7082601 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 18 Dec 2015