Jump to content

Sunspot Archive


Go to solution Solved by Vancanneyt Sander,

Recommended Posts

Hello Sander Vancanneyt, (Webmaster & analyst Space Weather and Aurora), and website crew! 

My question is with regard to your archive of sunspot info.  The keepers of the International Sunspot Number registered sunspot activity on May 29, 2019, EISNcurrent-3.png.11621588b6ac733f877e2d91098d04b0.png.

 

Yet, your archive does not reflect that information.  Why is that?

 

Thank you for the wonderful website!

Link to comment
Share on other sites

  • Solution

That's because the source is different. May 29th had no visible sunspot regions and no spots, as well as the day before and after. SWPC gave out a SN of 0 which still seems corect. No region was numbered as well so it must have been a shortlived one that was registered in some stations of the SILSO network that record the SN. SWPC has their own counting 😉 

  • Thanks 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you also agree to our Terms of Use and our Privacy Policy.