The barometer is only accurat
e to ± 0.09 inHg (3 hPa)
within the following relative p
ressure range: 8.86 to 32.48 in
Hg (300 -1,100 hPa), which
corresponds to an altitude of 2
9,527 ft. (9,000 m) down to 2,
500 ft. (750 m) below sea lev
el. At higher altitudes, you
should expect a possible
lesser accuracy and non-
linearity effects in the error
(the calibration offset only
allows for a partially linear
correction).
Make sure your time zone and
daylight savings time setting is
correct (even when connected to
the Internet via Wi-Fi this is
needed).