Bob, I really like the classes you use for the ALPO, but I am a little fuzzy on the difference between Class I and Class II. From your examples I know what you are saying, but would it be better to make Class I something like "ZHR's greater than 10 at maximum activity" and Class II something like "ZHR's of 3 to 10." Just a suggestion. Would you mind if I included these classes on my web site? Sincerely, Gary