{"coeffs": [-1.4644798374319867e-06, -5.125001095489989e-08, -0.12876236272352887, 0.07007398369825191], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [8.155789313444221e-08, 7.168554451915458e-08, 0.021152833313102002, 0.019207217308650357], "covariance": [[6.6516899325290966e-15, -1.229380077937756e-15, 8.03044246060734e-10, -8.844931569605518e-10], [-1.2293800779377555e-15, 5.138817293007692e-15, 5.806731248221322e-10, 7.215447610107266e-10], [8.03044246060734e-10, 5.806731248221322e-10, 0.0004474423571718778, -2.3997633109547292e-05], [-8.844931569605516e-10, 7.215447610107267e-10, -2.399763310954725e-05, 0.0003689171967417179]]}