This page explains how Samuel Medina (USATT# 83569)'s rating went from 1838 to 1828 at the P&W Aircraft TTC - September 2013 Open held on - 22 Sep 2013. 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.