Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE weather (zip_code VARCHAR, mean_visibility_miles INTEGER)
### Question:
Find the zip code in which the average mean visibility is lower than 10.
### Answer:
SELECT zip_code FROM weather GROUP BY zip_code HAVING AVG(mean_visibility_miles) < 10