def dpss_fit_argparser():
    ap = fitting_argparser()
    sp = ap.add_argument_group('DPSS Specific Fitting Arguments.')
    sp.add_argument('--horizon', default=1.0, type=float, help='Fraction of horizon delay to model with DPSS modes.')
    sp.add_argument('--min_dly', default=0.0, type=float, help='Minimum delay [ns] to model with DPSS modes.')
    sp.add_argument('--offset', default=0.0, type=float, help='Offset from horizon delay [ns] to model with DPSS modes.')
    return ap
def dpss_fit_argparser():
    ap = fitting_argparser()
    sp = ap.add_argument_group('DPSS Specific Fitting Arguments.')
    sp.add_argument('--horizon', default=1.0, type=float, help='Fraction of horizon delay to model with DPSS modes.')
    sp.add_argument('--min_dly', default=0.0, type=float, help='Minimum delay [ns] to model with DPSS modes.')
    sp.add_argument('--offset', default=0.0, type=float, help='Offset from horizon delay [ns] to model with DPSS modes.')
    return ap