Which region has 0.6% none?
CREATE TABLE "by_access_to_electricity" (
  "region" text,
  "public_network" text,
  "own_community_generator" text,
  "solar_panel" text,
  "other_source" text,
  "none" text
);
SELECT "region" FROM "by_access_to_electricity" WHERE "none"='0.6%';