Thank you, this is excellent detective work. There are many Cr clusters in the SAC database, you could start with the Excel version and search for "Cr" through the spreadsheet and make a version of this. Obviously, it would have less entries, I am not going to worry about the fact that M 71 has a Cr number that no one uses to refer to that object.

My point is that those of you who wish for an Excel version can make one starting with the Saguaro Astronomy Club data.

www.saguaroastro.org

Good work;
Steve Coe