iPhone Map Location with Skyhook

Ok this is strange; yesterday my cell service at work was out all afternoon but I was still connected to work wifi. I tried getting my location on my iPhone and it was dead on the spot I set in skyhook for my AP. Today my cell service is back to 5 bars and when I check my location it's back to 10 miles off and very zoomed out.

Is cell tower location being used before AP location?

To the 2 of you who are reading this; are you experiencing anything similar?