@Mike-Boyle
If you need any help in evaluation let me know.
I'm a retired electronic/ computer technician.
Boylemike1@aol.com

Steve, this is great and I thank you (I live in Florida)
A better work around is take the measurement at 100 meters or 500 meters.
This is a compromise of sorts.
This is a worthwhile project and may save many lives here.
I am reposting on Facebook with some editing. all the tool bars and are can be distracting. I wish you could do false colour white green and blue.

THank you.