{"coeffs": [-7.030480647099543e-07, -4.3976531610517086e-08, -0.1683006977503857, 0.06975778334426587], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [9.129946127342915e-08, 6.66832733646866e-08, 0.046242236303808054, 0.04174789693577029], "covariance": [[8.33559162881839e-15, -1.2912058619399122e-15, 2.2195215578972102e-09, -2.273740905525587e-09], [-1.2912058619399122e-15, 4.446658946629521e-15, 1.0030776220283436e-09, 1.3893823348147477e-09], [2.2195215578972106e-09, 1.0030776220283434e-09, 0.002138344418377224, -0.00027675063891209687], [-2.273740905525587e-09, 1.3893823348147477e-09, -0.0002767506389120967, 0.0017428868985596981]]}