The graph below shows the number of people at a London underground station at different times of the day

The line graph describes the changes in the number of users at a London Subway station from 6:00 am to 12:00 pm. As can be seen from the graph, there was a boom in the number of people at the beginning of the period while there was a slight decline at the end.
There was a dramatic rise in passenger numbers from 100 to 400 in the first three hours, followed by a sharp fall to just under 200 at 10:00 am. After rising gradually in the next four hours, the number of people who use a London Underground station hit a trough of 100 at 4:00 pm. There was a marked improvement at 6:00 pm with the number of visitors surging approximately 300%. 9:00 pm saw a slight growth to about 180 in the user numbers at 9:00 pm, followed by a small drop at the end of the period.