Record Details

Catalog Search

Comparison of the variations of sunspot number, number of sunspot groups, and sunspot area, 1875-2013 / Robert M. Wilson.

Image of item

Series Information

NASA technical paper

Record details

  • Physical Description: 1 online resource (viii, 23 pages) : illustrations.
  • Publisher: Huntsville, Alabama : National Aeronautics and Space Administration, Marshall Space Flight Center, April 2014.

Content descriptions

General Note:
Title from title screen (viewed March 12, 2015).
"April 2014."
Bibliography, etc. Note:
Includes bibliographical references (pages 21-23).
Funding Information Note:
Sponsored by National Aeronautics and Space Administration M-1381

Additional Resources