Well, its pretty clear from that graph that the SDRs are interfering with the sun creating them things. SDRs are unnatural and the sun knows it, so its denying us propagation.
jFarley has inspired an idea- Instead of tying an SDR to a boatanchor, what if instead, make an analog SDR with vacuum tubes? Not only may it appease the sun god, but would also survive an EMP (don't bring up the point that the computer & power grid wouldn't. Next step is an analog computer made from vacuum tubes. We've done that before, and can do it again in 2014, better...stronger...faster. ).
Yes... yes.... Analog SDR sends the data to the control unit, which is some form of embedded SDR s/w. Tuners, home entertainment systems, and car stereos. Portable radios may be a bit tricky, so need to invent better power source than chemical batteries.
The sunspots will return!