{"coeffs": [3.0575401441854273e-08, 4.626765156997233e-07, 0.3785520098969875, 0.07127004603560375], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [6.190601255975703e-08, 3.528225211642505e-07, 0.1235388108818264, 0.07595907275097265], "covariance": [[3.832354391048795e-15, -1.4552009383138136e-14, -4.068406993658163e-09, -3.860978815471342e-09], [-1.45520093831381e-14, 1.2448373144069797e-13, 4.25158080154629e-08, 2.4848987543733665e-08], [-4.068406993658152e-09, 4.2515808015462884e-08, 0.015261837794095668, 0.008156242458703843], [-3.860978815471337e-09, 2.4848987543733685e-08, 0.008156242458703855, 0.0057697807331875545]]}