In my city, there was just one run as of yesterday. I did a couple yesterday, adding ~2000 spots. All of them were new. Some of them, whom I know their actual location, are off by 300m, and they show up on the client OK, so it wasn't a GPS fix issue. Ps trying to post an example BSSID, but having a ...

I just noticed that on WiGLE WiFi the WiFi spots are much better placed, however on the web database most of them are off by 200-300m.

GPS altitude is off by 10-20m even on professional GPS devices. I'm a Surveyor Engineer by profession.

Their position is estimated based to many users' detection. That is, if your device detects a SSID in one edge of town, and another user's device detects the same SSID at the other edge of town, the said SSID would end up downtown. There should be some filtering on SSIDs that tend to "move" a lot ...

OK, so I just installed wigle on android and did a run. Lots of spots are misplaced (understandable). I would expect that if I did another run on the other side of the block, the spots would move closer to their correct place, since they would register their location two times. however, when I click ...