ratio of 16:13 has how many highest size (steps)?
CREATE TABLE "interval_size" (
  "interval_name" text,
  "size_steps" real,
  "size_cents" real,
  "just_ratio" text,
  "just_cents" real,
  "error" text
);
SELECT MAX("size_steps") FROM "interval_size" WHERE "just_ratio"='16:13';