TFA Dostmann FOCUS Manual De Instrucciones página 47

Common to weather forecasting, absolute accuracy cannot be guaranteed. The weather forecasting feature
is estimated to have an accuracy level of about 75% due to the varying areas the Weather station has been
designed for use. In areas that experience sudden changes in weather (for example from sunny to rain), the
Weather station will be more accurate compared to use in areas where the weather is stagnant most of the
time (for example mostly sunny).
If the weather station is moved to another location significantly higher or lower than its initial standing point
(for example from the ground floor to the upper floors of a house), discard the weather forecast for the next
12-24 hours. By doing this, the Weather Station will not mistake the new location as being a possible change
in air-pressure when really it is due to the slight change of altitude.
WEATHER TENDENCY INDICATOR
Working together with the weather icons is the weather tendency indicators (located on the left and right
sides of the weather icons). When the indicator points upwards, it means that the air-pressure is increasing
and the weather is expected to improve, but when indicator points downwards, the air-pressure is dropping
and the weather is expected to become worse.
Taking this into account, one can see how the weather has changed and is expected to change. For
example, if the indicator is pointing downwards together with cloud and sun icons, then the last noticeable
change in the weather was when it was sunny (the sun icon only). Therefore, the next change in the weather
will be cloud with rain icons since the indicator is pointing downwards.
Note:
Once the weather tendency indicator has registered a change in air pressure, it will remain permanently
visualized on the LCD.
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