CREATE TABLE table_name_22 (height_above_sea_level__m_ VARCHAR(255), opened VARCHAR(255), distance_from_wellington VARCHAR(255))
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 table_name_22 WHERE opened > 1876 AND distance_from_wellington = "604.53km"