The table shows data about underground railway systems in six major cities with date open, km of routes, and passagers numbers per year in millions.
The first chart below shows the number of airline crew (pilots, stewards etc) needed to fly a passenger plane between Australia and a number of other countries. The second chart shows the number of passenger complaints per plane journey made on these routes, and average kilogram (kg) weight of luggage (or baggage) carried per passenger.
The given table illustrates data about underground railway systems in six major cities in the world with opening dates, kilometres of routes and the number of passengers in millions.