{"coeffs": [-5.899138900926836e-07, -2.3031403193675793e-08, -0.22136445302657404, 0.052580060322109684], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [6.973709579848815e-08, 4.1870088265746296e-08, 0.03337702373587327, 0.0291906586288515], "covariance": [[4.863262530407514e-15, -4.1100898084111716e-16, 1.2342249422043782e-09, -1.1111871462047331e-09], [-4.110089808411172e-16, 1.7531042913813854e-15, 3.736766535029068e-10, 4.6463966416635597e-10], [1.2342249422043782e-09, 3.736766535029068e-10, 0.001114025713465048, -0.00017908181839922056], [-1.1111871462047331e-09, 4.64639664166356e-10, -0.00017908181839922056, 0.0008520945511861426]]}