The bar graph compare the social networking sites between check up on someone you used to be in a relationship with and post detail or pictures from a date
You will see from the graph that, The younger peoples are the most they use social networking sites
If you notice at post details or pictures from a date , You can see that at 18-29 years old. They use at 31%
If you notice at check up on someone you used to be in relationship with at 18-29 years old. They use at 39%