The graph below show the number of enquiries received by the tourist information office in one City over a six month period in 2011

The linear chart illustrates the number of quires a tourist information centre through various means of communication during first half-year of 2011.
Overall, it can be incurred that the enquiries by person become popular by passing the time as compared to email and telephone enquiries.
Initially, it is vividly apparent that the number of queries received through letter or emails 700 to near about 600 in the first three months period. Then, it slightly drop in April on less than 600. In the last two months the queries by emails or letter dramatically dropped and stay at 400.
Secondly,the personal enquiries showed gradually increment in January to June. In first months queries by telephone was 900. It was slightly rose up in last months before, showed some downfall in February and March 300 to 1000.