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Field Offset Size Dash Value Explanation
Inside Humidity 22 1 255 Inside Humidity at the end of the archive period
Outside Humidity 23 1 255 Outside Humidity at the end of the archive period
Average Wind Speed 24 1 255 Average Wind Speed over the archive interval. Units
are (MPH)
High Wind Speed 25 1 0 Highest Wind Speed over the archive interval. Units
are (MPH)
Direction of Hi Wind Speed 26 1 32767 Direction code of the High Wind speed. 0 = N, 1 =
NNE, 2 = NE, … 14 = NW, 15 = NNW, 255 =
Dashed
Prevailing Wind Direction 27 1 32767 Prevailing or Dominant Wind Direction code. 0 = N,
1 = NNE, 2 = NE, … 14 = NW, 15 = NNW, 255 =
Dashed
Firmware before July 8, 2001 does not report
direction codes of 255. Software should substitute
the dash value whenever the High Wind Speed is
zero.
Average UV 28 1 255 Average UV Index. Units are (UV Index / 10)
ET 29 1 0 ET accumulated over the last hour. Only records "on
the hour" will have a non-zero value. Units are (in /
1000)
Invalid data 30 1 This byte is contains invalid data in Rev A data
records
Soil Moistures 31 4 255 4 Soil Moisture values. Units are (cb)
Soil Temperatures 35 4 255 4 Soil Temperatures. Units are (°F + 90)
Leaf Wetnesses 39 4 255 4 Leaf Wetness values. Range is 0 – 15
Extra Temperatures 43 2 32767 2 Extra Temperature values. Units are (°F + 90)
Extra Humidities 45 2 255 2 Extra Humidity values
Reed Closed 47 2 0
Count of the number of time the anemometer reed switch
was closed
Reed Opened 49 2 0
Count of the number of time the anemometer reed switch
was opened
Unused Byte 51 1
Contents of the Rev "B" archive record.
Field Offset Size Dash Value Explanation
Date Stamp 0 2 Not applicable These 16 bits hold the date that the archive was
written in the following format:
Year (7 bits) | Month (4 bits) | Day (5 bits) or:
day + month*32 + (year-2000)*512)
Time Stamp 2 2 Not applicable Time on the Vantage that the archive record was
written:
(Hour * 100) + minute.
Outside Temperature 4 2 32767 Either the Average Outside Temperature, or the
Final Outside Temperature over the archive period.
Units are (°F / 10)
High Out Temperature 6 2 -32768 Highest Outside Temp over the archive period.
Low Out Temperature 8 2 32767 Lowest Outside Temp over the archive period.
Rainfall 10 2 0 Number of rain clicks over the archive period
High Rain Rate 12 2 0 Highest rain rate over the archive period, or the rate
shown on the console at the end of the period if there
was no rain. Units are (rain clicks / hour)
Barometer 14 2 0 Barometer reading at the end of the archive period.
Units are (in Hg / 1000).
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