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 depicts the questions submitted per month to the Tourist Information Office in a city from January to June 2011 by three different channels. Overall, problems handled by person and telephone mounted up for the last 3 months creating a substantial gap with inquiries received through email. In January, requests by letter overweighted in-person inquiries with the total differences were 400, while telephone stood up as the most favorable channel at a number of approximately 900. However, in the midst of February and March, face-to-face questions overpassed the email at a point of 700. Constantly, the latter gradually leveled up in the second quarter until reached the highest position in inquiries at a number 1900. On the other side, problems handled by telephone remained stagnant during March and April before increasing to 1600 in June. Finally, questions by email substantially dropped to less than 400 causing wide differences with the other channels.