[Observium] GeoLocation slightly off?

Hello Community,

I've read through the archives and I've got my geo-location sysLocation string working. What I cannot find an answer on is why the Latitude/Longitude insists on being slightly different from the actual co-ordinteas that I specify. As you can see in the screen shot, Observium parses the SysLocation fine and passes the exact correct values to MAPQUEST. Where do the slightly incorrect values come from?

Thanks for any help guys.

Regards,

Rudolf