The line graph illustrates the number of inquests the Tourist Information Office obtained in a certain city over an intervel of six months from January to June in 2011. Also, they are classified into 3 categories: in person, by letter / email or by telephone.
Overall, in the first three months the office reached most of the questions by telphone. However, in the last months most people tend to inquire about tourism in person. In addition to that, it can be seen that both the line graph concerning in person and by telphone increased over the six months. But, the by letter / email category took a decreasing course of action.
In January, the number of inquiries received by telephone and in person were respectively about 900 and just above 400. Both numbers climbed to reach exactly 1600 and around 1900 in the last month
In terms of questions collected by letter / email, it was just under 800 in January
before decreasing to reach under 400 in June. 
The line graph illustrates the number of inquests the Tourist Information Office obtained in a certain city over an  
intervel
 of six  
months
 from January to June in 2011.  
Also
, they  
are classified
 into 3 categories: in  
person
, by letter / email or by telephone. 
Overall
, in the  
first
 three  
months
 the office reached most of the questions by  
telphone
.  
However
, in the last  
months
 most  
people
 tend to inquire about tourism in  
person
.  
In addition
 to that, it can be  
seen
 that both the line graph concerning in  
person
 and by  
telphone
 increased over the six  
months
.  
But
, the by letter / email category took a decreasing course of action.
In January, the number of inquiries received by telephone and in  
person
 were  
respectively
 about 900 and  
just
 above 400. Both numbers climbed to reach exactly 1600 and around 1900 in the last  
month
In terms of questions collected by letter / email, it was  
just
 under 800 in January 
before
 decreasing to reach under 400 in June.