{"coeffs": [-2.7573383526676335e-06, 2.9301211994292e-05, 0.3912426406672941, 0.1533182100623234], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [9.104832846848781e-07, 1.541993231591354e-06, 0.012856948036775031, 0.015941972897126618], "covariance": [[8.289798116905647e-13, -1.0566209148568877e-12, -2.3329140089700185e-09, -1.3161943454914522e-08], [-1.0566209148568855e-12, 2.3777431262735473e-12, 1.5354217917075845e-08, 2.274193610972473e-08], [-2.3329140089699916e-09, 1.5354217917075815e-08, 0.00016530111282033334, 0.00010947847387098294], [-1.3161943454914512e-08, 2.2741936109724753e-08, 0.00010947847387098336, 0.00025414649985271967]]}