# type  t   guess  shift  shift_err
   0       0.0    0.00000000    0.00000000    0.00000000
   1     788.5   -0.00081278    0.74465635    0.04474083
   1    1993.5   -0.00081278    1.88361123    0.11307939
   1    3509.5   -0.00081278    3.31603195    0.19899516
   1    5173.0   -0.00081278    4.88719467    0.29319277
   1    6828.0   -0.00081278    6.44967934    0.38682876