The given table compares the opened date, route length, and total passengers per year of underground railway systems in several cities. From 
general
 overview, it is obvious that London Add an article
the general
a general
is
 the first city that opened the system in 1863 compared with Los Angeles in 2001 which Wrong verb form
was
becomes
 the most recent one.
Based on the data, Tokyo has the highest number of users or 1927 Wrong verb form
became
Use synonyms
millions
 each Change to singular
million
years
 followed Change to a singular noun
year
with
 Paris with a slight difference which is 1191 Change preposition
by
Use synonyms
millions
, and Change to singular
million
in contrast
 with Kyoto (45 Linking Words
Use synonyms
millions
) Change to singular
million
as well as
 Los Angeles (50 Linking Words
Use synonyms
millions
) where both numbers are not more than 50 Change to singular
million
millions
 of passengers per year. 
More than that, the city of London has the longest route among all cities in the table which is 394 Use synonyms
Use synonyms
kilometers
. Change the spelling
kilometres
This
 number is approximately threefold higher than the other underground railway in Europe, or in Paris where it is only 199 Linking Words
Use synonyms
kilometers
. The shortest route is in Kyoto, where the length is only 11 Change the spelling
kilometres
Use synonyms
kilometers
 Change the spelling
kilometres
in contrast
 with the other railway in the same country, or in Tokyo, where it is 155 Linking Words
Use synonyms
kilometers
.Change the spelling
kilometres