{"coeffs": [1.2659020754007768e-09, 1.9903444027316444e-08, 0.6772313569097497, 0.03276490453133721], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.729848917636643e-09, 2.579368307843758e-09, 0.02053081402797588, 0.0180517370493316], "covariance": [[2.9923772778486653e-18, -9.606850278068762e-19, 1.1096670801527634e-11, -1.5679195737972907e-11], [-9.60685027806876e-19, 6.6531408675087715e-18, 2.937199958586136e-11, 2.8438675313791064e-11], [1.1096670801527634e-11, 2.9371999585861366e-11, 0.00042151432465133116, 5.9998263351542515e-05], [-1.5679195737972904e-11, 2.8438675313791064e-11, 5.9998263351542495e-05, 0.0003258652104982111]]}