Almost a solar cycle of WSPR data, and a review of 160m and 10m data.
I recently posted on the Knights QRSS forum (https://groups.io/g/qrssknights) a look at how the 28MHz WSPR data compared to the observed results amongst the QRSS mode users on the same band. The results tied in with the WSPR data. Also just for fun I looked at the WSPR data for the other end of the spectrum, 160m to see how things reacted. The chart clearly shows the seasonal changes.
The page is here - https://sites.google.com/site/g0ftdradio/wspr-solar-cycle
73 de Andy