In case of having X hits, but no X track (having not enough to form a track out of them), check for each hit if it fits between the first and last hit of the U and V tracks in time and z coordinate.
If this hit fits in this, push it into the HoughCandidatesX to then get matched in with the U and V simple tracks into a 3D track.
In case of having X hits, but no X track (having not enough to form a track out of them), check for each hit if it fits between the first and last hit of the U and V tracks in time and z coordinate. If this hit fits in this, push it into the HoughCandidatesX to then get matched in with the U and V simple tracks into a 3D track.