Barometric Pressure Sensor

Sea Level 760 mmHg (29.92 in. Hg)
600 m (1,969 ft.) 710 mmHg (27.95 in. Hg)
1200 m (3,937 ft.) 660 mmHg (25.08 in. Hg)
1800 m (5,906 ft.) 610 mmHg (24.02 in. Hg)