CREATE TABLE table_72975 ("Segment description" TEXT, "Date opened" TEXT, "Line ( s ) " TEXT, "Endpoints" TEXT, "# of new stations" TEXT, "Length  ( miles ) " TEXT)

How many new stations have a lenght (miles) of 6.0?
SELECT COUNT("# of new stations") FROM table_72975 WHERE "Length (miles)" = '6.0'
SELECT COUNT("# of new stations") FROM "table_72975" WHERE "Length (miles)" = '6.0'