{"coeffs": [-1.293909961327932e-07, -4.706553777794771e-09, -0.34499986818810885, 0.0110970075959483], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.491402228537642e-08, 7.170102107126094e-09, 0.01661515522641223, 0.011968788619632383], "covariance": [[2.224280607287045e-16, -1.5094900757641151e-18, 1.0232989571513084e-10, -6.970539453803148e-11], [-1.5094900757641176e-18, 5.141036422661405e-17, 1.262271294348045e-11, 6.997957871119882e-12], [1.0232989571513084e-10, 1.2622712943480453e-11, 0.0002760633831977736, -0.00011130001593812033], [-6.970539453803148e-11, 6.997957871119879e-12, -0.00011130001593812033, 0.00014325190102144162]]}