The chart provided illustrates the details about six subway systems.
It is interesting to note that the length of a subway increases with its age. Of all the subway systems listed, London subway stays in the top position in terms of age and length, which has a history of 132 years and is about 181 times as long as M subway. The next one is Paris subway, which was opened in 1900 and is 494 kilometers shorter than London subway. This is followed by Tokyo, Washington and Los Angles. Clearly, M subway ranks the last in these two aspects, which was established a century later than London subway and covers a route of only 11 kilometers.
Tokyo subway owns the largest carrying capacity, which serves about 32 times as many passengers as that of M subway each year. Paris subway ranks the second in this aspect, which holds 1, 596, 000 passengers less than Tokyo subway per year. London, Washington and Los Angles maintain the middle position. M subway transports the smallest number of passengers, with only 122, 000 annually.
It is evident from the information given that there are striking differences in age, length and carrying capacity among the 6 subway systems.