<|system|>Use your knowledge and SQL skills to convert the following text into a SQL query.
Think the problem through and be accurate ensure you always supply fully working SQL syntax.

SQL Statments should be wrapped in <codestart type="sql"> and </codeend> tags.

Example output:
<codestart type="sql">SELECT * FROM table_name;</codeend>
<codestart type="sql">SELECT column_name FROM table_name WHERE column_name = 'value';</codeend><|end|><|user|>What is the zip code in which the average mean sea level pressure is the lowest?

SQL Table Create Statement:
CREATE TABLE weather (zip_code VARCHAR, mean_sea_level_pressure_inches INTEGER)<|end|><|assistant|><codestart type="sql">SELECT zip_code FROM weather GROUP BY zip_code ORDER BY AVG(mean_sea_level_pressure_inches) LIMIT 1</codeend><|end|>