def patch(path, ao):
    needs_patching = [ 
      '/REF/ATLAS_2016_I1468168/d01-x01-y01', 
      '/REF/ATLAS_2016_I1468168/d02-x01-y01'
    ]
    if path in needs_patching:
      for p in ao.points():
          p.setErrs(1, (0.5, 0.5))
    return ao