Conversion of 2000 Summary File 3 Data for uszips           07:24 Friday, March 6, 2009   5

                           Variable     N            Mean         Std Dev         Minimum         Maximum
                           ------------------------------------------------------------------------------
                           FirstObs     2       453029.50       0.7071068       453029.00       453030.00
                           LastObs      2       487086.00       9.8994949       487079.00       487093.00
                           ------------------------------------------------------------------------------
                                         Conversion of 2000 Summary File 3 Data for uszips           07:24 Friday, March 6, 2009   6
                             Proc Tabulate Report: Geography Summary Levels: # Occurrences & Total Pops
                                              (excludes cases where geocomp is not 00)

                                            -------------------------------------------
                                            |               sumlev_code               |
                                            |-----------------------------------------|
                                            |        850         |        860         |
                                            |--------------------+--------------------|
                                            |  3-digit ZIP Code  |  5-digit ZIP Code  |
                                            |  Tabulation Area   |  Tabulation Area   |
                                            |--------------------+--------------------|
                                            |       Pop100       |       Pop100       |
                                            |--------------------+--------------------|
                                            |   N   |    Sum     |   N   |    Sum     |
                                            |-------+------------+-------+------------|
                                            |    887| 285,230,516| 33,178| 285,230,516|
                                            -------------------------------------------