{"coeffs": [-2.405728391897527e-07, -1.8468804521400695e-08, -0.2849705221599138, 0.013789443752462709], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.0640604595531255e-08, 2.5222583659090898e-08, 0.02900037197516636, 0.020155731506966867], "covariance": [[1.651658741890316e-15, -1.5079813825596303e-17, 3.173636963007926e-10, -1.719219514133548e-10], [-1.5079813825596303e-17, 6.361787264398391e-16, 1.4616600884913002e-10, 9.220437718382036e-11], [3.1736369630079254e-10, 1.4616600884913002e-10, 0.0008410215746980144, 7.632017513232478e-05], [-1.7192195141335475e-10, 9.220437718382038e-11, 7.632017513232477e-05, 0.00040625351258093687]]}