CREATE TABLE "stations" (
  "station" text,
  "distance_from_wellington" text,
  "height_above_sea_level_m" text,
  "opened" real,
  "closed" text
);

Question: Which station that sat 54m above seal level is now Closed?
SQL: SELECT "station" FROM "stations" WHERE "height_above_sea_level_m"='54m' AND "closed"='closed';

Question: Opened prior to 1877 only 2.44km from Wellington, when did this station close?
SQL: SELECT "closed" FROM "stations" WHERE "opened"<1877 AND "distance_from_wellington"='2.44km';

Question: What is the height above sea level for the station opened 175.67km from Wellington prior to 1887?
SQL: SELECT "height_above_sea_level_m" FROM "stations" WHERE "opened"<1887 AND "distance_from_wellington"='175.67km';

Question: For the station opened after 1876 at 604.53km from Wellington, what is the height above sea level?
SQL: SELECT "height_above_sea_level_m" FROM "stations" WHERE "opened">1876 AND "distance_from_wellington"='604.53km';