La Crosse Technology WS-9031U Instruction Manual page 38

data will also be displayed in the time and calendar sections (for
temperature data only).
2. To reset the MIN/MAX data, press and hold the HOUR/IN key for about
4 seconds. This will reset all recorded indoor data to the current
temperature and humidity readings.
OUTDOOR RELATIVE HUMIDITY AND OUTDOOR
TEMPERATURE
The last LCD section shows the outdoor temperature and humidity, the
reception indicator, the MIN/MAX outdoor data. A number in the center will
also be shown if more than one sensor has been used.
Maximum record data
Outdoor
temperature
in °F/ °C
Sensor identification number (only if there
are more than one sensor)
Outdoor reception indicator
Outdoor relative
humidity in RH%