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File name "README.SUM" describes the data tables supporting the paper 
entitled "Monthly mean climatic data for Antarctic automatic weather 
stations" by C.R. Stearns, L.M. Keller, G.A. Weidner, and M. Sievers.

The files with the extension ".SUM" contain the monthly mean data
for the U.S. Antarctic automatic weather stations starting in 1980-1989.

The files are in the following format:

The first line of each year contains the name of the station, the
latitude, longitude, elevation, and year -- A80 format

The data are arranged as follows:  Month, Mean Air Temperature (C),
Percent of Temperature Data Missing, Maximum Air Temperature (C),
Minimum Air Temperature (C), Mean Wind Speed (m/s), Percent of Wind
Data Missing, Resultant Wind Direction and Speed, Constancy, Maximum
Wind Direction and Speed, Mean Air Pressure (mb), Percent of Pressure
Data Missing, Maximum Air Pressure, Minimum Air Pressure.

Format:  A4, F8.1, I4, F7.1, F9.1, F8.1, I4, I6, F5.1, F7.2, I8, I3,
F11.1, I4, F8.1, F10.1

Each year has twelve months and a thirteenth line indicating the
yearly mean values, same format.  Missing values for temperature are
999.9, for percent data missing are 99, for mean wind speed and
resultant wind speed are 99.9, for wind direction are 999, for
constancy are 9.99, for maximum wind speed are 99, for air pressure
9999.9.