Activity Graphs

The following graphs show the temporal variation of the various white light and hydrogen alpha parameters obtained from member’s observations.

Monthly number of groups (black) and northern hemisphere number of groups (red) and southern hemisphere (blue) since 1979:

Monthly relative sunspot number (black) and 13-month smoothed relative sunspot number (red) since 1979:

Latitude distribution of sunspot groups (Butterfly diagram) and relative sunspot number:

Prominence monthly averaged mean daily frequency and relative sunspot number:

Polar faculae monthly averaged mean daily frequency for the northern and southern hemispheres:

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