CFR > Title 41 - Public Contracts and Property Management > SUBTITLE C—Federal Property Management Regulations System > CHAPTER 102—FEDERAL MANAGEMENT REGULATION (parts 102 to 102-197) > SUBCHAPTER G—ADMINISTRATIVE PROGRAMS (parts 102-191 to 102-197) > PART 102-192—MAIL MANAGEMENT > SUBPART E—Performance Measurement Requirements (§102-192.110 to §102-192.115) > 102-192.115—Why must we use performance measures?