Which station that sat 54m above seal level is now Closed?
CREATE TABLE "stations" (
  "station" text,
  "distance_from_wellington" text,
  "height_above_sea_level_m" text,
  "opened" real,
  "closed" text
);
SELECT "station" FROM "stations" WHERE "height_above_sea_level_m"='54m' AND "closed"='closed';