- Livingston and Penn work which suggests the visibility of sunspots will drop.
- Monopole solar activity as suggested was the case during a previous solar minimum based on work with unpublished solar drawings in Scandinavian university archives. (vague because I can't remember the source)
On looking back at various Talkshop articles the following surprise dated March 2011 turned up.
Vuc had helped out by telling me about data which extends the dataset back in time a little. I think more luck than law but it suggests there is a significant meaning in detail cyclic content.
Previous posts on this subject are best found by Google, which indexes blogs so here is a specific search phrase - site:tallbloke.wordpress.com wso polar