The dataset describes all stations in the UK with routes trains take between each station.
Its important to note that some trains skip stations. For example, if a train visited stations A, B and C, and another train visited A and C, the path in a Graph Network should be A, B and C.
Frequency of routes through stations can be calculated, however, some routes have been obtained multiple times due detecting routes from different stations. Therefore, duplicate routes need to be taken into consideration.