The line chart illustrates the bulk of inquiries sent to the Tourist Information Office in a particular city via three ways of communication between January and June in 2011.
Overall, the enquiries in person experienced the most dramatic change among different options. The inquiries sent by letter or email always stood higher than by telephone.
From January to Mar, the number of people sent inquiries by letter or email slightly decreased from approximately 800 enquiries to nearly 700 enquiries. Over the two months, it considerably declined from 700 question to lower than 400 question. In particular, it remained unchanged from May to June. Several people communicating by telephone continuously fluctuated from 900 inquiries to 1000 inquiries in the first three months. Over the next month, it stabilized at 1000 enquiries to April. Finally, the inquiries sent by telephone steeply increased from 1000 inquiries to 1600 inquiries between April and June.
The enquiries in person made up 800 in Mar, about two times as much as that of enquiries sent in January. From Mar to June, it rose by 1100 inquiries and it peaked at 1900 inquiries.
