The line refs in the brussels north-south are tagged: L01, L02 and L03. 

In fact all three are line 0. With sublines 0-6.

The current 01-03, reference the tunnel numbers, not the railway lines.

Suggest to correct the line refs in accordance with the Open Data:
L0/1 - L0/6

https://opendata.infrabel.be/explore/dataset/lijnsecties/map/?disjunctive.label&disjunctive.ecs_voltfreq&disjunctive.ecs_maxtraincurrent&disjunctive.ecs_maxstandstillcurrent&disjunctive.ecs_minwireheight&disjunctive.ls_id&location=19,50.84234,4.35113&basemap=jawg.streets

