http://ujh6xlyukepvbtaaywygzvovoudcvlpokowturdlm37sjzodw573j3ad.onion/kanji.html
GSF refers to the 3 variables used in sorting the primary list, Grade, Stroke and Frequency. The grade level refers to what grade level the kanji themselves are taught in Japan, where a 2nd grader would be learning
grade 2 kanji and so on. This is used as the primary "cluster" for grouping the kanji, so the first 80 are all grade 1
kanji.