what is the lowest apparent magnitude when the object type is spiral galaxy, the constellation is leo minor and the ngc number is more than 3021?
CREATE TABLE "3001_3100" (
  "ngc_number" real,
  "object_type" text,
  "constellation" text,
  "right_ascension_j2000" text,
  "declination_j2000" text,
  "apparent_magnitude" real
);
SELECT MIN("apparent_magnitude") FROM "3001_3100" WHERE "object_type"='spiral galaxy' AND "constellation"='leo minor' AND "ngc_number">3021;