The graph below shows the number of enquiries received by the Tourist Information Office in one city over a six-month period in 2011.

The line chart illustrates the amount of number of inquiries sent to the Tourist Information Office via three types of communication (in person, by letter or email, and by phone) in a particular city for the first half-year period in 2011.

Overall

, the inquiries were made by visitors (in person and via phone, respectively), whilst written email and letter became the least common choices.

In addition

, the number of enquiries in person experienced is the most dramatic change among the different options. In January, visitors made 900 telephone inquiries to the Tourist officer at the start,

then

gradually rose to approximately 1600 in June,

while

only 400 letters and emails were sent to the tourist authority. In terms of the in-personal platform, it increased significantly in the next three months and reached its highest point at around 2000 time and became the most famous platform

at the end

of the period. It seemed to be that written emails and letters dropped steadily throughout to period and

following

this

decreased to 390 queries in May and June.