{"coeffs": [7.740712498634e-08, 0.1313874152915847, 1.2526977923121008, 0.067748027598339], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.169299215894337e-08, 7963.290282741292, 4114.883819838217, 0.020571658318696576], "covariance": [[4.705859088079785e-16, -0.00011969214275135577, -6.184929646566281e-05, -3.519785612064932e-10], [-0.00011969214421651498, 63413992.12720188, 32768014.334282678, 159.62518060669825], [-6.184929722470514e-05, 32768014.33427529, 16932268.850766357, 82.48362754265762], [-3.519785637275238e-10, 159.62517997744138, 82.48362721741111, 0.000423193125981198]]}