Youshiko YC9510, Руководство по эксплуатации

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6.4.4 Relative Pressure Calibration Discussion
To compare pressure conditions from one location to another,
meteorologists correct pressure to sea-level conditions. Because the air
pressure decreases as you rise in altitude, the sea-level corrected pressure
(the pressure your location would be at if located at sea-level) is generally
higher than your measured pressure.
Thus, your absolute pressure may read 28.62 inHg (969 mb) at an altitude of
1000 feet (305 m), but the relative pressure is 30.00 inHg (1016 mb).
The standard sea-level pressure is 29.92 inHg (1013 mb). This is the average
sea-level pressure around the world. Relative pressure measurements greater
than 29.92 inHg (1013 mb) are considered high pressure and relative
pressure measurements less than 29.92 inHg are considered low pressure.
To determine the relative pressure for your location, locate an official
reporting station near you (the internet is the best source for real time
barometer conditions, such as Weather.com or Wunderground.com), and set
your weather station to match the official reporting station.
6.5 Rain Display
6.5.1 Rain Increments of Measure
Press and release the RAIN button to view rain rate, event, daily, weekly,
monthly, yearly, and total.
Press the RAIN button 2s to reset the current display rain.
Note:
Reset daily rain, which will auto-reset the rate and event rain.
Reset weekly rain, which will auto reset daily, rate, and event rain.
Reset monthly rain, which will auto reset daily, weekly, rate, and event rain.
Reset yearly rain, which will auto reset daily, weekly, monthly, rate, and
event rain.