METAR is a format for reporting weather information. A METAR weather report is predominantly used by pilots in fulfillment of a part of a pre-flight weather briefing, and by meteorologists, who use aggregated METAR information to assist in weather forecasting.
http://www.wingsbywerntz.com/520-metar-slp-sea-level-pressure
My altitude is 2230
http://www.wingsbywerntz.com/520-metar-slp-sea-level-pressure
My altitude is 2230