My wifi signal strength is almost always in the 70% range when I surf on my back patio about 30 feet from my router. Is 70 a good number? Am I getting full, or close to full, speed? I tried to google this question and didn't really get the info. I know this is a question better asked on a computer specific forum, but there are a lot of computer guys here and I get along better with people who smoke cigars 