{"coeffs": [-3.542503094673769e-08, 0.004439152293891435, 3.868964235583823, 0.2740026547579416], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.6577974025335034e-08, 693.5429924383777, 42867.45543704155, 0.7355344276421812], "covariance": [[2.1695076643047852e-15, -3.144970455255514e-05, -0.0019438953577142037, -3.3994115973644375e-08], [-3.144970559602339e-05, 481001.88236037974, 29730423.316093273, 507.0445578938793], [-0.00194389542221514, 29730423.316007324, 1837618735.646743, 31340.17403226634], [-3.399411654493178e-08, 507.0445498211614, 31340.17353338733, 0.5410108942469112]]}