The passage presents fundamental information about underground railway systems in six different cities.
To begin with, the dates when the railways opened range from 1863 to 2001. The newest city to open a railway system is Los Angeles, while the oldest is London.
The passage also summarizes the data regarding the number of kilometers of route, which shows a similar pattern to the opening dates. London remains at the top with 394 kilometers of railway, whereas Kyoto has the shortest route compared to Los Angeles.
When it comes to the number of passengers per year, the trend is quite different. Tokyo stands out with 1,927 passengers per year, followed by Paris with 1,191 passengers. In contrast, both Kyoto and Los Angeles attract fewer than 60 passengers per year, which aligns with their limited kilometers of route.
In conclusion, the railway systems in London, Paris, and Tokyo are more popular based on three different metrics, while Washington, D.C. still has room for improvement. Conversely, Kyoto and Los Angeles are the least popular.