block by timelyportfolio 145f2df74cbc4fd6892c

145f2df74cbc4fd6892c

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Simplifying calculations, adding inverse of plot, working sensibly with D3 scales etc.

data reverse engineered from hereā€¦ http://thegrowingseason.wordpress.com/2013/05/10/soils-management-the-old-jar-test/

index.html

data.json