Thank you. I am going to try something like this with the modification that I am seeking to "toss out" the results that fell betweentwo values. I am not sure how to modify that use of grep but will have fun experimenting with it.

I will try to have fun with it anyway. Working on this has involved a lot of encounters between me and my limitations (current knowledge, learning speed, and so on pretty much ad infinitum). I get lost sometimes between feeling humble ("I have so much to learn") and feeling like a deer in headlights ("I will never ever get it, my chops are those of a 3 year old and I will eventually be working at a fast food chain").

A constant diet of crow gets old, especially if like me you are vegetarian (the veggie crowcakes aren't very good, yet). :)