{"coeffs": [-2.126720414391538e-07, 1.894304198984669e-06, 0.7923667400204129, 0.23127189693159783], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [8.6857277791572e-08, 3.0797906932892126e-07, 0.04960552689820588, 0.03833559465702698], "covariance": [[7.544186705362308e-15, -2.5741665189978872e-14, -4.011040609282668e-09, -3.2948648334593696e-09], [-2.5741665189979443e-14, 9.485110714470847e-14, 1.520199343674548e-08, 1.1695121279465558e-08], [-4.011040609282794e-09, 1.52019934367456e-08, 0.002460708298848627, 0.0018503004570746076], [-3.294864833459407e-09, 1.1695121279465434e-08, 0.001850300457074573, 0.0014696178177078755]]}