Has anyone else with the 06099m direct to wifi display noticed that the barometric pressure reading on the display not only varies from what the my-acurite app displays but from an actual reading and adding the adjustment for elevation which for me is (855ft = .91 added to actual reading correct?) my display will be off -.20 inHg at times so i enter the calibration in the display and correct it but then over a couple days seems to start getting off again.... Just wondering why the display varies so widely from my-acurite app and actual barometric pressure readings after adjustment for altitude.