File:Ssn anual.jpg

Nombre de Wolf de Taques solars 400 anys.

400 year sunspot history, measured with Wolfer numbers.

• 1790 to 1820: Dalton Minimum
• 1645 to 1715: Maunder Minimum

Derivative work from: http://science.nasa.gov/ssl/pad/solar/images/ssn_yearly.jpg

Uploaded in Catalan Wikipedia by Xgarciaf.

Simbologia: (act) = aquesta és la imatge actual, (esb) = esborra aquesta versió antiga, (rev) = reverteix a aquesta versió antiga. Cliqueu sobre la data per veure la imatge carregada en aquesta data.

   * (esb) (act) 11:16, 15 maig 2005 . . Xgarciaf (Discussió | contribucions) . . 800×253 (30.171 octets) (Nombre de Wolf de Taques solars 400 anys. * 1790 to 1820: Mínim de Dalton * 1645 to 1715: Mínim de Maunder ---- Font: http://science.nasa.gov/ssl/pad/solar/images/ssn_yearly.jpg 

	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

)

	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[4] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [5] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [6] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

This graph image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}. It is recommended to name the SVG file “Ssn anual.svg”—then the template Vector version available (or Vva) does not need the new image name parameter.

This graph image was uploaded in the JPEG format even though it consists of non-photographic data. This information could be stored more efficiently or accurately in the PNG or SVG format. If possible, please upload a PNG or SVG version of this image without compression artifacts, derived from a non-JPEG source (or with existing artifacts removed). After doing so, please tag the JPEG version with {{Superseded|NewImage.ext}} and remove this tag. This tag should not be applied to photographs or scans. If this image is a diagram or other image suitable for vectorisation, please tag this image with {{Convert to SVG}} instead of {{BadJPEG}}. If not suitable for vectorisation, use {{Convert to PNG}}. For more information, see {{BadJPEG}}.