La Crosse Technology WS-9625U-IT - Manual (Page 24)

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SECTION 5 – DAILY MIN AND MAX TEMPERATURE
• Display the daily minimum and maximum temperature of the currently selected outdoor
channel.
ATOMIC TIME FUNCTION - WWVB RADIO CONTROLLED TIME
The NIST (National Institute of Standards and Technology—Time and Frequency Division)
WWVB radio station is located in Ft. Collins, Colorado, and transmits the exact time signal
continuously throughout the United States at 60 kHz. The signal can be received up to 2,000
miles away through the internal antenna in the Wireless Weather Station. However, due to the
nature of the Earth’s Ionosphere, reception is very limited during daylight hours. The Wireless
Weather Station will search for a signal every night when reception is best.
The WWVB radio station receives the time data from the NIST Atomic clock in Boulder, Colorado.
A team of atomic physicists is continually measuring every second, of every day, to an accuracy
of ten billionths of a second per day. These physicists have created an international standard,