sunspotarea: Annual average sunspot area (1875-2015)
In fpp2: Data for "Forecasting: Principles and Practice" (2nd Edition)
sunspotarea R Documentation
Annual average sunspot area (1875-2015)
Description
Annual averages of the daily sunspot areas (in units of millionths of a
hemisphere) for the full sun. Sunspots are magnetic regions that appear as
dark spots on the surface of the sun. The Royal Greenwich Observatory
compiled daily sunspot observations from May 1874 to 1976. Later data are
from the US Air Force and the US National Oceanic and Atmospheric
Administration. The data have been calibrated to be consistent across the
whole history of observations.
Format
Annual time series of class ts.
Source
NASA
Examples
autoplot(sunspotarea)
fpp2 documentation built on March 7, 2023, 8:36 p.m.
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| sunspotarea | R Documentation |
Annual average sunspot area (1875-2015)
Description
Annual averages of the daily sunspot areas (in units of millionths of a hemisphere) for the full sun. Sunspots are magnetic regions that appear as dark spots on the surface of the sun. The Royal Greenwich Observatory compiled daily sunspot observations from May 1874 to 1976. Later data are from the US Air Force and the US National Oceanic and Atmospheric Administration. The data have been calibrated to be consistent across the whole history of observations.
Format
Annual time series of class ts.
Source
NASA
Examples
autoplot(sunspotarea)
R Package Documentation
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Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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