{"coeffs": [-5.139522083527193e-07, 2.127793594115146e-09, -0.3251692552728625, 0.18731447677838856], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [8.989333021347089e-07, 1.7308973831391989e-07, 0.648154047831369, 0.4074119451013913], "covariance": [[8.080810816868118e-13, -1.1285174994239299e-13, 5.704358689105913e-07, -3.4220125303062424e-07], [-1.1285174994239255e-13, 2.996005750958127e-14, -6.736762105693679e-08, 6.157379792042141e-08], [5.704358689105914e-07, -6.736762105693704e-08, 0.42010366972018853, -0.23173814145212956], [-3.422012530306238e-07, 6.157379792042148e-08, -0.23173814145212926, 0.16598449301129908]]}