The daily and monthly mean total ozone observations in this dataset were digitized
from "Ozone Data for the World", published by the Meteorological
Service of Canada in cooperation with the World Meteorological
The published monthly mean total ozone
values were sometimes found to be in error, in which case the
errors were corrected in the digitized version. Some stations
revise and correct previously published values of ozone which
were in error perhaps because of lack of instrument calibration
or an error in data reduction techniques.
1951-05-01 to 1975-12-31
Department of Astrophysical and Planetary Sciences, University of Colorado
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