Postal Consulting Services Inc (PCSi)
The following publications are available from PCSi on a subscription basis.  

Service Performance Update Quarterly

Quarterly publication that features news and information on the U.S. Postal Service (USPS) delivery service performance.  This PCSi publication is the only one of its kind within the postal industry, and includes trend charts looking back for 8 complete Fiscal Year quarters of USPS service performance data for all classes of Market-Dominant Mail (First-Class, Periodicals, Standard Mail and Package Services).  It also reports on significant changes to USPS service standards, USPS network realignment, service performance measurement, and other initiatives impacting USPS service performance.

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