Sharper Image SN004 - Manual (Page 16)

For example, 1003 -2 on the LCD means the pressure measurement
is 1003 mbar) and the -2 means the data was collected 2 hours ago.
By comparing the pressure value (mbar), it provides a hint to predict
the weather condition. If the pressure value is rising, the weather
condition may improve. If the pressure value is not changing, the
weather condition may stay at the current condition. If the pressure
value is declining, the weather condition may become poor. The
pressure trend indicator shows the pressure trend.
Means the pressure is rising.
The weather conditions may improve.
Means the pressure is not changing.
The weather may stay at the current condition.
Means the pressure is declining.
The weather conditions may become poor.
Note: The pressure limits on your weather forecast can display a
pressure level between 700mbar and 1,050 mbar. The operation
pressure of the clock unit is from 70 mbar to 1,030 mbar.
Weather Station
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