{"coeffs": [-3.338098649753473e-06, 2.8172980369610184e-05, 0.44127172746080917, 0.23544271717613002], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.264441962630508e-07, 1.1520815261941383e-06, 0.011956278268850718, 0.01382061197807896], "covariance": [[2.7714349177904955e-13, -5.367185734470211e-13, -4.171690763308532e-09, -7.012123263974912e-09], [-5.367185734470186e-13, 1.3272918429978149e-12, 1.2852326045963202e-08, 1.5432981738898105e-08], [-4.171690763308491e-09, 1.2852326045963157e-08, 0.00014295259004219193, 0.0001366533463128519], [-7.012123263974896e-09, 1.5432981738898138e-08, 0.00013665334631285272, 0.0001910093154486196]]}