CREATE TABLE table_name_70 (height__m_ INTEGER, location VARCHAR(255), height__ft_ VARCHAR(255))
What is the lowest height in meters for the building located in mailänder straße 1, sachsenhausen-süd, with a height shorter than 328.1 ft?
    
SQL: SELECT MIN(height__m_) FROM table_name_70 WHERE location = "mailänder straße 1, sachsenhausen-süd" AND height__ft_ < 328.1