Acceleration of Gravity calculator

Please open GoogleEarth, MapsMe application or other GEO service, and find your location.
You will need latitude, longitude and altitude.
Application try to get your location automatically.
App use weather info from nearest METAR station, just click "FIND FORECAST" button.
LATITUDE [decimal format]:
LONGITUDE [decimal format]:
ALTITUDE [meters]:
PRESSURE from barometer [hPa]:
PRESSURE from weather forecast [hPa]: