{"coeffs": [-3.834659043079095e-07, 0.7641830907693408, 2.2945767061795386, 0.18022924071958954], "function": "fpl = lambda t, Cl, Cu, A, k: (Cl + ((Cu - Cl) / (1 + numpy.exp((A - t) / k))))", "log_ftol": 1e-06, "errors": [1.42027219366486e-06, 1906.402048036578, 451.6024302181566, 0.03117457602768625], "covariance": [[2.0171731040975936e-12, -0.002175620759694752, -0.0005154264523746092, -3.992389295261722e-08], [-0.0021756207589144505, 3634368.7687580585, 860935.787057782, 57.574297722082505], [-0.0005154264521868783, 860935.7870578628, 203944.754978945, 13.639172495265626], [-3.9923892945445886e-08, 57.574297730761515, 13.639172497321997, 0.0009718541905059903]]}