Thanks guys, I'm basically trying to track it over a period of time on my pond... and I do realize that fishing conditions have a lot to do with it. I think that if that is tracked and recorded over a long period of time along with RW I could get a lot of useful information from it. Just like esshup stated using with wind direction and baro pressure readings could help in determining best days to fish then I could compare those type days over time to help gauge population stats.

I wrote me a small ios app to track as much info as I can so that I can do all types of comparisons and that is one I thought would be useful, especially for electro shocking. I've seen some numbers for electro shocking but really nothing for rod and reel fishing.