Hello: I have went through the site, but I do not see anything that explains the colors. Of note: nothing wrong in typing all caps, if people think I am yelling by that, then thats their mis-conception. Thanks.

I AM GETTING INTO WAR DRIVING, FOR SECURITY PURPOSES AND LEARNING WITH MY JOB. I KNOW THIS SOUNDS BAD, BUT WHAT DOES ALL THE DIFFERENT COLORS MEAN ON WIGGLE'S WEBMAP? I THINK ITS TO THE STRENGH, BUT AT WHAT LEVELS? AND WHEN YOU DO SEE A BUNCH OF RED AND PURPLE SQUARES, DOES THAT MEAN IT IS SECURE? P...