Great stuff and I for one am glad you have kept this monthly data. I think this bears out the 3 x 4 and 4 x 3 theory well. 2 variations I'd like to bring up:
559 Pena, blue dot bottom right
582 roggenburk, blue blob in the sky
Both probably on one of the slits v a clean version on the other.
Also looking at 554 Northrup, border frame off center
thx for this data.
bill
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