The graph illustrates the multitude of request received by the Tourist Information Office in one city over the first half of the year 2011.
Overall, the figure for enquiries received in person and by telephone saw a monthly increase, meanwhile, the number of enquiries received by letter or email exhibited a contrasting pattern, with signs of decreasing over the months.
In January of 2011, the rate of enquiries in person were the lowest among the three data, with slightly 400 and enquiries by telephone had the most number of request received, with more than 800. However, we can see an upward trend in the quantity of enquiries received in person and by telephone, with 1600 and nearly 2000 respectively in June. Although both data increased month over month, in February and April, enquiries by telephone slightly decreased to 800 and 1000 in turn. The request data by telephone had an unstable increase and decrease from February to April, thrn gradually increases to the second highest position among the three data. Besides, enquiries in person still increased steadily over the months and held the highest position in June. It can be seen that by letter or email request decreased every month. From January to February, the figure for request received by letter or email remained relatively stable, with nearly 800 and slightly 600 respectively. However, between March to May, this data experienced a dramatic decline, from nearly 600 to less than 400. Finally, enquiries by letter or email stopped at over 200.