{"coeffs": [-3.892097230057572e-07, 0.8935242348859357, 2.0423349057978726, 0.14657151730574147], "function": "fpl = lambda t, Cl, Cu, A, k: (Cl + ((Cu - Cl) / (1 + numpy.exp((A - t) / k))))", "log_ftol": 1e-06, "errors": [5.917363039344468e-07, 2358.3765819134173, 388.38960733871784, 0.016645424172365766], "covariance": [[3.50151853394e-13, -0.0010095726880349127, -0.00016627502596946954, -8.268816598711847e-09], [-0.0010095726880534942, 5561940.102117614, 915968.948753431, 37.7852429277561], [-0.00016627502597844784, 915968.9487534267, 150846.48708872343, 6.222866465518474], [-8.268816598819869e-09, 37.78524292731749, 6.2228664654452235, 0.00027707014587797856]]}