This page explains how John C Browning (USATT# 50538)'s rating went from 1558 to 1565 at the 1997 Wichita RR held on - 8 Feb 1997. 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.