This page explains how Frank A. Roth (USATT# 9592)'s rating went from 1765 to 1732 at the Trolley Car TTC Sep 2012 Phill held on - 8 Sep 2012. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.