{"coeffs": [-2.395992694699376e-06, 1.913962852209053e-05, 0.24173933588807467, 0.13017823081225197], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [9.063456614142594e-07, 4.597862866801688e-06, 0.06419986891764569, 0.04208816155692307], "covariance": [[8.214624579644514e-13, -2.2407837479319356e-12, -2.021348823849335e-08, -2.770407623278218e-08], [-2.2407837479319336e-12, 2.1140342941913835e-11, 2.813168876760662e-07, 1.7228446072632782e-07], [-2.02134882384933e-08, 2.813168876760661e-07, 0.004121623169042889, 0.0021653172252408446], [-2.7704076232782163e-08, 1.7228446072632785e-07, 0.002165317225240846, 0.0017714133432416568]]}