The given line graph illustrates how much postals the Tourist Information Office in an exclusive city gained during a six-month period in the year 2011.
Over the entire period shown, while the figure for by-hand and phone-call letters experienced an upward trend, the opposite was true for that of emailings. It can be noticeable that in-person enquiries stood out as the dominant trend among three domains.
Regarding in January, Phoning enquiries is recorded to be the highest tendency among citizens with roughly 900, exceeding that of sending email and face-to-face, indicating respectively nearly 800 and more than 400. During the next one month, sending postals through calling plummeted to 800, accompanied with a slight declination of emailing to approximately 700. Meanwhile, a reverse pattern was experienced by direct enquiries, with figure escalated to 600, before subsequently rocketed to 800 in March. During the same timeframe, the number of telephoning for postals witnessed a surge to 1000, as well as an relatively unchanged condition of emailings.
From March onwards, individuals showed a reduced number of postals through sending emails, evidenced by a significant drop to merely 370 in May and then remained stable at the end of the period. The face-to-face enquiries held steady, but later soared to 1600 at June. Sending letters by direct meeting swelled quite smoothly, marking 1900 at the end of the stage and became the most preferred choices.