What is the water area (sqmi) for the township at latitude 48.423224?
CREATE TABLE "t" (
  "township" text,
  "county" text,
  "pop_2010" real,
  "land_sqmi" text,
  "water_sqmi" text,
  "latitude" text,
  "longitude" text,
  "geo_id" real,
  "ansi_code" real
);
SELECT "water_sqmi" FROM "t" WHERE "latitude"='48.423224';