The line graph illustrates changes in the number of enquiries received by the Tourist Information Office in a city over the six-month period from January to June 2011.
Overall, it is apparent that enquiries made by telephone and in person exhibited an upward trend throughout the period, whereas the figure for letter/email enquiries declined steadily. Telephone enquiries initially maintained the leading position; however, in-person enquiries overtook all other methods towards the end of the period.
In January, telephone enquiries recorded the highest figure, standing at approximately 900. Despite experiencing a slight fall to 800 in February, the number then recovered and remained stable at around 1,000 between March and April. From that point onwards, it increased steadily, reaching a peak of approximately 1,600 by the end of the period. Meanwhile, letter/email enquiries ranked second at the beginning of the timeframe, at around 800. Thereafter, the figure underwent a continuous decline, dropping to just under 400 in May before leveling off at this level in the final month.
On the other hand, enquiries made in person followed an opposite trajectory. Beginning at just over 400 in January, the figure rose gradually during the first three months before witnessing a dramatic increase from April onwards. Having surpassed both telephone and letter/email enquiries in April, it continued its upward trend, reaching a peak of nearly 1,900 in June, thereby becoming the most common method of enquiry.