human
Schema:
train (id, train_number, name, origin, destination, time, interval)
station (id, network_name, services, local_authority)
route (train_id, station_id)
weekly_weather (station_id, day_of_week, high_temperature, low_temperature, precipitation, wind_speed_mph)
Please answer with SQL.
assistant
Sure, I understand.
human
What's average low_temperature per week?
assistant
SELECT AVG ( low_temperature ) FROM weekly_weather ;
human
How about the average wind speed per week in miles per hour?
assistant
SELECT AVG ( wind_speed_mph ) FROM weekly_weather ;