{"coeffs": [-1.7784376904472765e-07, -3.105897978042269e-10, -0.2923709998692999, 0.0005540742660698976], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.8178300589975632e-08, 1.1131859208633977e-08, 61745.36000539758, 69237.87530129869], "covariance": [[3.3045061233950843e-16, 8.598606608991796e-34, 3.868622154709848e-12, -0.0], [1.2897909913487695e-33, 1.2391828944084907e-16, 1.4203878221252226e-13, -5.075721456210534e-13], [0.0, -5.075721456210534e-13, 3812489482.1961517, 4275117536.487513], [-4.060577164968427e-12, -5.075721456210534e-13, 4275117536.487513, 4793883376.238187]]}