instruction: Show a bar graph, the data is those times of trains that run through stations for the local authority Chiltern, and the Y axis is the total number of different times, display X from low to high order please.
response: SELECT time, COUNT(time) FROM station AS t1 JOIN route AS t2 ON t1.id = t2.station_id JOIN train AS t3 ON t2.train_id = t3.id WHERE t1.local_authority = "Chiltern" GROUP BY time ORDER BY time