La Crosse Technology WS1506 Instruction Manual page 36

Each weather record includes the Wind direction, Wind speed/ gust in Beaufort scale,
Wind chill temperature, wind speed/gust, dew point, Outdoor temp and humidity,
relative pressure, 24-hour rainfall and total rainfall, pressure history and weather
tendency. Also, the time and date of recording will be displayed.
Note:
In order to acquire the correct time of recording of the history records, you shall
manually set the current time as soon as installing batteries to the weather station.
Afterwards, you should avoid changing the pre-set time as it will also alter the
recorded "time of recording" of each history record, which may lead to confusion.
To view the weather history:
1. In normal display, press the HISTORY key. The latest weather record will be
shown with the date and time of recording. The "HISTORY" icon will be
displayed at the bottom of the LCD.
2. When viewing History records, user may shift to see the Mode 1 or Mode 2
data by pressing the SET key.
(Mode 1: with wind speed + outdoor Temp + Rel. pressure;
Mode 2 : with wind gust + Dew point + rainfall data)
Note: If user wants to choose to view total rainfall or 24-hour rainfall in history records,
he shall first in normal display choose to show the particular rainfall data, the press
History key and SET key to view the particular rainfall data in History records.
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