how many programs are broadcast in each time section of the day?
SELECT count(*) ,  time_of_day FROM broadcast GROUP BY time_of_day
SELECT count(*) ,  time_of_day FROM broadcast GROUP BY time_of_day
[{'count(*)': 4, 'Time_of_day': 'Morning'}, {'count(*)': 5, 'Time_of_day': 'Night'}, {'count(*)': 2, 'Time_of_day': 'Noon'}]