Barrel and rear muon detector detector tracks are already used in the trigger system to reject some of the cosmic muon background events online. Still many of the cosmic or halo muon events contain tracks of the muon detectors and it turns out that all information coming from the muon detectors is very useful for MUFFIN.
MUFFIN uses full tracks from the FMUON, BMUON and RMUON detectors. A full track has valid information in all coordinates.
MUFFIN also uses tracks for which only wire or strip readout is available Wire or strip readout tracks are only available from BMUON and RMUON. For these tracks one of the coordinates is not known.