The graph illustrates information about how many requests were sent at a tourist office in the United Kingdom, over a six-month period between January and June.
Overall, it is clear that the amount of requests in person and by telephone were far more than by letter or email in the question.
Looking at the details, requests in person had a shapely increase from around 400 times to about 1900 times during the whole period.
Also, requests started by telephone around 90 times in January, then, it experienced an increase in requests to right 100 times in March, after that, requests leveled off until April. Finally, requests had a dramatic jump from 100 times to 1600 times between April and Juan.
If we look at the requests by letter and email, the requests started to just under 800 times in January, then, it leveled of until March, after that, having dropped plummeted from by around 700 times to just under 400 times between March and May, eventually, the requests leveled off until the end of time.