Trucircle - your data regarding a 16 week cycle was interesting. I tried though, to incorporate it into my composite cycle/Gann-Astro chart starting with your pre-March 2009 trough - overall, with the exception of the first two cycles there didn't seem to a good fit observed to price action for alternate cycles. Running the cycle as 16 x 2 (or 32 week) was more interesting with respect to price action. The fuschia arrows in the chart below show the positions of this cycle trough relative to price action since that pre-2009 low.
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Also of note is this next chart which shows the recent and expected position of the pending trough. This position does match the time frame you posted for it. In addition it appears to nest directly with other Hurst cycles - because of this I will be expecting an additive cycle effect with the probability of a lower price than expected at that trough. (I know some are looking to that nested point for/as the 18 month nested low - will have to sort that out when we get there!)