CREATE TABLE route (train_id INT, station_id INT)
CREATE TABLE station (id INT, network_name TEXT, services TEXT, local_authority TEXT)
CREATE TABLE weekly_weather (station_id INT, day_of_week TEXT, high_temperature INT, low_temperature INT, precipitation FLOAT, wind_speed_mph INT)
CREATE TABLE train (id INT, train_number INT, name TEXT, origin TEXT, destination TEXT, time TEXT, interval TEXT)

What is the average high temperature for each day of week Plot them as bar chart, display in ascending by the X.
SELECT day_of_week, AVG(high_temperature) FROM weekly_weather GROUP BY day_of_week ORDER BY day_of_week
SELECT "day_of_week", AVG("high_temperature") FROM "weekly_weather" GROUP BY "day_of_week" ORDER BY "day_of_week" NULLS FIRST