examples:
sddsoutlier par.bpm par.bpm1 -columns=P?P?x -stDevLimit=3
sddspfit par.bpm -pipe=out -columns=P1P2x,P1P1x \
| sddsoutlier -pipe=in par.2bpms -column=P1P1xResidual -stDevLimit=2
sddspfit par.bpm -pipe=out -columns=P1P2x,P1P1x \
| sddsoutlier -pipe par.2bpms -column=P1P1xResidual -stDevLimit=2 \
| sddspfit -pipe -columns=P1P2x,P1P1x \
| sddsoutlier -pipe=in par.2bpms -column=P1P1xResidual -stDevLimit=2