This page explains how Fred M. Halbig (USATT# 6364)'s rating went from 1917 to 1934 at the NTTC January Open held on - 22 Jan 1995. 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.