The given table shows several information about six different city metros, make a comparison in number of lines, total length. annual journeys and cost of a single ticket.
Firstly, there is the number of lines. Despite all of the presented cities have an elevated date in comparison to the rest of the world, New York Subway has even 24 lines, with 659 miles of length. which make it the biggest one. Beijing Subway follows the classification with 19 lines and 357 miles of total length. The remaining subway have aproximately 15 lines and a underground system between 120 and 250 miles.
In addition, annual journeys seem to be higher in Asia, with both of the subways over 3 billions of annual journey.
Moreover, the cost of a single ticket is extremely higher in London: 7.30 dollars, on the other hand is really cheaper in Mexico City and in Beijing.
To summarize, these are the main features and informations about the biggers underground systems over the world.