wifi signal

Is this normal for a wifi signal(top green line)? Or should it be somewhat straight with a few dips / rises like the others? (Does it even matter what it looks like?)

http://i.imgur.com/iIVzr.jpg

I decided to download inSSIDer since I've been having issues with browsing on my desktop and laptop, but I don't know if this means anything. Browsing is fine on my iPhone and wifi-only iPad.

Normally they do have rises and dips, however it looks like you're very near the router, that it's a good one and possibly broadcasting on it's own channel, possibly a 5ghz router.

I wouldn't worry if you get a good connection, nice strong signal at -50db!