{"coeffs": [1.457597866241294e-07, 1.3772310034767692, 1.9812583874056908, 0.14002861572335382], "function": "fpl = lambda t, Cl, Cu, A, k: (Cl + ((Cu - Cl) / (1 + numpy.exp((A - t) / k))))", "log_ftol": 1e-06, "errors": [9.303798119672422e-07, 4044.4408722644903, 412.9579393363142, 0.01721073675267157], "covariance": [[8.656065945162009e-13, -0.00264755455021425, -0.00027035105906618874, -1.3174561262180336e-08], [-0.002647554549962777, 16357501.96924355, 1670183.957900802, 66.9135172833959], [-0.00027035105903654074, 1670183.9579008303, 170534.25966089498, 6.8324288116269605], [-1.3174561261602337e-08, 66.91351728629995, 6.832428811923085, 0.00029620945956976004]]}