Number of sunspots counted manually (raw data): 34 --
Updated 10 Nov 2022

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Hello !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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On Friday, 11 November 2022 at 13:07:54 UTC+1, Revo Metanurm wrote:
> Hello !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> What are You doing ?
> Want to inform ?
Thank you for your interest.
Raw number of sunspots count is not published.
What is published is Wolf number, called international sunspot number.

What I publish is raw data, manual sunspots count "s"
neither revised nor scalled up or down

So it makes sense to count the real number of sunspots.

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Wolf number
From Wikipedia, the free encyclopedia

Wolf number since 1750.

The Wolf number (also known as the relative sunspot number or Zürich number) is a quantity that measures the number of sunspots and groups of sunspots present on the surface of the Sun.
Contents

1 History
2 Calculation
2.1 Smoothed monthly mean
3 Alternative series
4 See also
5 References
6 External links

History

Astronomers have been observing the Sun recording information about sunspots since the advent of the telescope in 1609.[1] However, the idea of compiling the information about the sunspot number from various observers originates in Rudolf Wolf in 1848[2] in Zürich, Switzerland. The produced series initially had his name, but now it is more commonly referred to as the international sunspot number series.

The international sunspot number series is still being produced today at the observatory of Brussels.[3] The international number series shows an approximate periodicity of 11 years, the solar cycle, which was first found by Heinrich Schwabe in 1843, thus sometimes it is also referred to as the Schwabe cycle. The periodicity is not constant but varies roughly in the range 9.5 to 11 years.[4] The international sunspot number series extends back to 1700 with annual values while daily values exist only since 1818.

Since 1 July 2015 a revised and updated international sunspot number series has been made available.[5] The biggest difference is an overall increase by a factor of 1.6 to the entire series. Traditionally, a scaling of 0.6 was applied to all sunspot counts after 1893, to compensate for Alfred Wolfer's better equipment, after taking over from Wolf. This scaling has been dropped from the revised series, making modern counts closer to their raw values. Also, counts were reduced slightly after 1947 to compensate for bias introduced by a new counting method adopted that year, in which sunspots are weighted according to their size.[6]
Calculation

The relative sunspot number R is computed using the formula

R = k ( 10 g + s )

where

s is the number of individual spots,
g is the number of sunspot groups, and
k is a factor that varies with observer and is referred to as the observatory factor or the personal reduction coefficient.

The observatory factor compensates for the differing number of recorded individual sunspots and sunspot groups by different observers. These differences in recorded values occur due to differences in instrumentation, local seeing, personal experience, and other factors between observers. Since Wolf was the primary observer for the relative sunspot number, his observatory factor was 1.[6][7]