Tim,
I have the RW chart to the closest 0.5 inch for bass and also one for bluegill on my website. It is critical for the smaller bass less than 14 inches to have accurate length and weight measurements. The RW is good is an index so it is most useful using it over time. If you see the RW going down starting harvesting bass (if quality bass fishing is your goal).
You can find it at
www.lakework.com. Click on articles then click on "Does your pond need a physical exam". The article describes in more detail about the use of RW's. Good luck, Greg
