The table provides data about the underground train station network systems in six major cities.
Overall,it can be seen that the three older underground systems are longer and serve significantly more computer than the newer systems.The table compares six cities network systems of their separate year,size and how people who are use them each year.
Looking at the data set in more detail it can be clear that the London underground systems is the oldest railway network systems, having opened in 1963 is also the oldest system, with 394 kilometers of route 775 million people per year use it. The second largest system in Paris ,is only about half the size of the London underground, with 199 kilometers of route.However ,it serves more peoples per year.while only third system of size Tokyo system used 155 km of route with 1927 million passenger per year.
Turning to the remaining data sets it is evident that the next three newer networks,the Washington DC underground opened 1976,with 126 km of route,it can be compared that the Kyoto and los Angeles system for the 11 km and 28 km of route.By contrast,the los Angeles system is the newest it opened in 2001, while the Kyoto is the smallest and serves only 45 millions commuter per year rather than in six major cities