This map displays, for each country, the rank of the word "Satan" in black metal lyrics (from full-lenghts, eps and demos) written between 1980 and 2013. This ranking is calculated as the ratio of the total number of times "Satan" occurs over the maximum raw frequency of any term in the country's lyrics, after stopwords removal. The darker the shade of blue, the higher up in the term-ranking is "Satan" for that country. Source: Deciphering Chaos. For the original D3 template, visit this page.