Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE weekly_weather ( station_id int, day_of_week text, high_temperature int, low_temperature int, precipitation real, wind_speed_mph int )
TABLE: CREATE TABLE train ( id int, train_number int, name text, origin text, destination text, time text, interval text )
TABLE: CREATE TABLE route ( train_id int, station_id int )
TABLE: CREATE TABLE station ( id int, network_name text, services text, local_authority text )

### Question ###
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.

### Accurate SQL ###

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