Introduction
Sunspot Activity Notes
Solar Observing CD-ROM
Sunspot Development
Disk Animations
Disk Drawings
Eclipses of the Sun
Glossary
Hydrogen Alpha
Latest Disk Animation
Latest Disk Drawing
Sunspot Measurements
Observing the Sun
Parallactic Angle
Software
Solar Books
Stonyhurst Disks
The Sun as viewed from the Earth
Sunspot Area
Sunspot Location
Sunspot Numbers
Sunspot Trends
Transits
Useful Links
What's New

Sunspot numbers derived from individual drawings are shown below in the form of a colour table from blue through to red via green and yellow. A sunspot number of 0 is , a sunspot number of 50 is , a sunspot number of 100 is , a sunspot number of 150 is while a sunspot number of 200 or more is . The numbers are given for each solar rotation so that active longitudes can be identified. Dates can be seen by placing the mouse icon over each coloured square.

Rotation

                                                

1999

 23rd January 2003 24th January 2003 25th January 2003   27th January 2003       31st January 2003 1st February 2003 2nd February 2003                     13th February 2003 14th February 2003   16th February 2003 17th February 2003 18th February 2003 19th February 2003

2000

 20th February 2003 21st February 2003 22nd February 2003 23rd February 2003 24th February 2003 25th February 2003 26th February 2003       2nd March 2003       6th March 2003     9th March 2003         14th March 2003 15th March 2003 16th March 2003 17th March 2003 18th March 2003  

2001

     21st March 2003 22nd March 2003 23rd March 2003 24th March 2003 25th March 2003 26th March 2003 27th March 2003     30th March 2003 31st March 2003   2nd April 2003   4th April 2003 5th April 2003 6th April 2003 7th April 2003 8th April 2003 9th April 2003     12th April 2003 13th April 2003    

2002

 15th April 2003 16th April 2003 17th April 2003 18th April 2003 19th April 2003 20th April 2003 21st April 2003 22nd April 2003 23rd April 2003     26th April 2003     29th April 2003         4th May 2003 5th May 2003 6th May 2003 7th May 2003 8th May 2003 9th May 2003 10th May 2003 11th May 2003  

2003

 13th May 2003   15th May 2003       19th May 2003         24th May 2003 25th May 2003 26th May 2003   28th May 2003 29th May 2003 30th May 2003     2nd June 2003 3rd June 2003 4th June 2003 5th June 2003 6th June 2003 7th June 2003 8th June 2003  

2004

 9th June 2003   11th June 2003 12th June 2003 13th June 2003 14th June 2003 15th June 2003 16th June 2003   18th June 2003   20th June 2003 21st June 2003               29th June 2003              

2005

 6th July 2003 7th July 2003   9th July 2003 10th July 2003 11th July 2003 12th July 2003 13th July 2003 14th July 2003 15th July 2003 16th July 2003     19th July 2003 20th July 2003             27th July 2003 28th July 2003          

2006

 2nd August 2003 3rd August 2003 4th August 2003 5th August 2003 6th August 2003 7th August 2003 8th August 2003                                          

2007

 30th August 2003 31st August 2003 1st September 2003   3rd September 2003 4th September 2003 5th September 2003 6th September 2003   8th September 2003 9th September 2003   11th September 2003 12th September 2003 13th September 2003 14th September 2003 15th September 2003 16th September 2003 17th September 2003 18th September 2003 19th September 2003 20th September 2003 21st September 2003 22nd September 2003 23rd September 2003 24th September 2003    

2008

   27th September 2003               5th October 2003           11th October 2003   13th October 2003   15th October 2003 16th October 2003 17th October 2003 18th October 2003   20th October 2003      

2009

 23rd October 2003 24th October 2003 25th October 2003 26th October 2003 27th October 2003     30th October 2003 31st October 2003       4th November 2003 5th November 2003 6th November 2003 7th November 2003             14th November 2003 15th November 2003 16th November 2003      

2010

           24th November 2003     27th November 2003 28th November 2003   30th November 2003         5th December 2003   7th December 2003 8th December 2003             15th December 2003 16th December 2003

2011

 17th December 2003 18th December 2003     21st December 2003           27th December 2003 28th December 2003     31st December 2003                     11th January 2004    

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Last updated on 30 January 2004.