The atlas covers the whole country: 357 municipalities across 15 counties. The method edition is 0.4.0, with the same cutpoints as in every other country the atlas takes in. Two municipalities with the same letter have been measured the same way, wherever they are.
Population figures come from Statistics Norway's official 250 metre grid, scaled against SSB table 07459, so each municipality sums to the population figure SSB itself publishes. 5,627,400 residents in total, with no deviation in any municipality. Public transport is calculated from Entur's national timetable data, and the municipal boundaries are Kartverket's.
D is the largest group, with 114 of 357 municipalities, and only 10 municipalities are graded A. Measured by where people live, the picture turns around: 29.5 per cent of the population lives in an A municipality. The country has a long tail of small municipalities that pulls the municipal count down without moving the population figure much.
Twelve municipalities are listed with their Sami or Kven name alongside the Norwegian one, as Kartverket records them. Kárášjohka, Guovdageaidnu, Aarborte and Dielddanuorri are among them.
Some of it is still missing. The map does not draw the public transport lines, and there is no traffic playback: that stage of the processing has not been run yet. Nor is it possible to ask the map a question. Public transport is still part of the grade itself, so what is missing is the display, not the measurement.