I just went and found one from our conversation about this last week. I’m gonna play around with some other sizes and may try and work the graphs into one. If found sizes 13x18 and 19x27. What size would think would be best. I’m thinking the size I used is too big. 
Discussion
You should work out where you are going to hang it and see what size would be best. Then see if any interest from there. I assume you are going to frame it and make a centre piece
I have a 13x19 frame and that’s the largest I can hang on the area next to my desk. It would be the same size as my bitcoin block data poster.
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I was looking to see if anyone was interested in one and get a consensus on size. Looks like I’m gonna do all three sizes. Just a fun little project. I want to be able to read it so idk if the font will be readable if I go below 10.
Also printers generally have stock size of paper. Probably ask them what are the stock sizes and choose one of those and or a multiple of one. Ie 2 or 4 posters per sheet. This keeps cost down.