instruction: Find times of trains that run through stations for the local authority Chiltern, compare the total number of different times, sort in asc by the bars 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