MUFFIN also tries to combine tracks for which only wire readout is
available if these tracks are in the BMUON. For these tracks the
position is unknown. The method is the same as is used for
combining full tracks as described in section 6.3.2 but
only information is used. These combined wire tracks are not
used to find muon candidates because of the missing coordinate.
Instead for each muon candidate the minimum angle between the
candidate trajectory and the combined muon track is calculated
and used to identify muon candidates.