30 feet north: SparkFun RTK Surveyor GPS-18443

I purchased the surveyor kit and got it connected to an android phone via bluetooth but the location is showing approximately 30 feet north of the physical location. Tried in a few different places and with different connector software and mapping software on the phone but it shows that it’s that 30 feet or so north. Bad digit somewhere with the latitude? 30ft is about 0.0001 degrees latitude where I’m at.

Thank you!

May just be bad map alignment as other gps units showing similar.