# type  t   guess  shift  shift_err
   0       0.0    0.00000000    0.00000000    0.00000000
   1    -657.0   -0.00081278   -0.25507588    0.52260489
   1     817.5   -0.00081278    0.31554090    0.65016386
   1    1873.5   -0.00081278    0.72414932    1.48968132
   1    2953.0   -0.00081278    1.14180508    2.34750006
   1    3714.5   -0.00081278    1.43639964    2.95239012