Please help me correct my writing for ielts task 1

*Topic:

The graph shows Underground Station passenger numbers in London.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

*Answer:
The chart illustrates how many people use the the London Underground Station at one particular hour from 6 a.m to 10 p.m.

Overall, the number of people using the London Underground Station fluctuates. Most people travel underground in London at 8 o’ clock in the morning and 8 o’clock in the afternoon and the least people move around by the same means of transport at 4 p.m.

At 6 o’clock in the morning, there is exactly 100 passengers at the London Underground Station. After two hours, the figure sharply goes up by 300 people. It then drops down significantly to just under 200 users when the clock strikes 10 o’clock and slowly increases to 300 four hours later. At 4 o’clock in the afternoon, the number is the least, only 100, compared to that at 8 a.m which peaks at 400. From 4 p.m, a greater many of people use the tube, so the number peaks again at 400 at 6 p.m. It then goes down dramatically to a bit over 100 passengers at 8 p.m.

Thanks a lot <3