the average results are off for Serbia. Our regulatory body for electronic communications does mandatory speed and quality testing for 4G networks of all 3 cell providers, and the results:
http://benchmark.ratel.rs/public/lp2018/src/measurement-scop...
Show that the maximum speed is 90 Mb/s and minimum speed is ~40-50 Mb/s. This is a chart for big cities, however, here are real-life some results:
https://imgur.com/a/LUyJlME
