Tonight I walked past a building in Manhattan with an NYC 'energy efficiency ' sign in one of its windows. The building got a grade of D but a score of 13... on a scale of 0 to 100.

That's a very very low D.

@kevin I dunno -- is it a linear grading scheme? :-)

@kfogel @kevin Using one data point and not looking it up, I will extrapolate that this is a linear scale that starts at 0/A and goes to 100/Z. In such a scale anything between 11.5 and 15 would be a D, in which case maybe this building is extremely efficient.

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@kfogel @kevin Ok I was slightly wrong: nyc.gov/site/buildings/propert

Interesting grading scheme, where "D" is the worst score you can get if you submit any information and F means "no information", with an extra grade, N, which also means "no information" but this time it is OK because they were exempt from providing information.

A few more steps and those quiet and signaling NaNs can evolve like IEEE floats and there will be more "no information" grades than stars in the universe 😛

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