OSM SQLite Experiment: Frequency of key public_transport:version (elem type r)

These queries show the top frequencies of keys for key (element type )

1 2 277,958
2 1 12,578
3 3 1,490
4 1+2 390
5 platform 19
6 historic 3
7 4J 1
8 not-2 1
9 not1not2 1

:-)