# type  t   guess  shift  shift_err
   0       0.0    0.00000000    0.00000000    0.00000000
   1    1144.5   -0.00081278    0.62748211    0.81128727
   1    2539.5   -0.00081278    1.39315222    1.79954200
   1    3939.5   -0.00081278    2.16141040    2.79067503