Summary statistics for rpsr2009q3 dataset : by Jean Roth , jroth@nber.org , 18 Dec 2015 Variable | Obs Mean Std. Dev. Min Max -------------+-------------------------------------------------------- primaryid | 35762 6320489 39229.02 6148139 6400752 rpsr_cod | 0 by Jean Roth , jroth@nber.org , 18 Dec 2015