When 380 g/mi (236 g/km) is the dirty electric grid rocky mountains (denver) what is the u.s national average electric mix?
CREATE TABLE table_24620684_2 (us_national_average_electric_mix VARCHAR, dirty_electric_grid_rocky_mountains__denver_ VARCHAR)
SELECT us_national_average_electric_mix FROM table_24620684_2 WHERE dirty_electric_grid_rocky_mountains__denver_ = "380 g/mi (236 g/km)"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_24620684_2 (us_national_average_electric_mix VARCHAR, dirty_electric_grid_rocky_mountains__denver_ VARCHAR) Question: When 380 g/mi (236 g/km) is the dirty electric grid rocky mountains (denver) what is the u.s national average electric mix? [/INST] SELECT us_national_average_electric_mix FROM table_24620684_2 WHERE dirty_electric_grid_rocky_mountains__denver_ = "380 g/mi (236 g/km)" </s>