The provided line graph illustrates the figure for passengers using the subway in London at different times during the day from 6. 00 to 22. 00.
Generally, there is a fluctuation in the rate of subway users in a day. People take the subway most at 8. 00 and 18. 00, and the least need of using underground station is at 16. 00.
At 6. 00, just 100 people are at a London underground station, but then at 8. 00, the passengers increase sharply to the peak of 400 which is much double the users at 10. 00 and more than half the number of people at 14. 00. Afterward, the figure drops significantly to the lowest level of under 100 people at 16. 00.
From 16. 00 to 22. 00, there is a dramatic rise in the number of subway users as it reaches the highest level of nearly 400. However, the rate decreases markedly to around 120 at 20. 00 and grows slightly to approximately 180 at 21. 00. finally, at 22. 00, the figures fall relatively to nearly 130 people. 
The provided line graph illustrates the figure for passengers using the  
subway
 in London at  
different
 times during the day from 6. 00 to 22. 00. 
Generally
, there is a fluctuation in the rate of  
subway
 users in a day.  
People
 take the  
subway
 most at 8. 00 and 18. 00, and the least need of using underground station is at 16. 00.
At 6. 00,  
just
 100  
people
 are at a London underground station,  
but
 then at 8. 00, the passengers increase  
sharply
 to the peak of 400 which is much double the users at 10.  
00
 and more than half the number of  
people
 at 14. 00. Afterward, the figure drops  
significantly
 to the lowest level of under 100  
people
 at 16. 00.
From 16. 00 to 22. 00, there is a dramatic rise in the number of  
subway
 users as it reaches the highest level of  
nearly
 400.  
However
, the rate decreases  
markedly
 to around 120 at 20. 00 and grows  
slightly
 to approximately 180 at 21. 00.  
finally
, at 22. 00, the figures fall  
relatively
 to  
nearly
 130  
people
.