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RI sunspot numbers just out for April – NASA/NOAA SWO number confirms the “rabbit ears”

There have been reports on increased sunspot activity in April and the Cycle 24 peak has been widely predicted to be in the next few months.
The RI number just out from Solar Influences Data analysis Center – RWC Belgium – Royal Observatory of Belgium is a tad below what I was expecting.

The chart has both April updates now. – The SWO SS# is 112.8 for April.
There is an issue that with modern technology we are counting smaller and smaller sunspots than was possible hundreds of years ago. So the sunspot time series are probably not homogenous. A reader has sent in this YouTube clip which explains some of the issues for those not up to speed with solar science.

1 comment to RI sunspot numbers just out for April – NASA/NOAA SWO number confirms the “rabbit ears”

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