{"coeffs": [-6.492714239308971e-08, -2.078526734675038e-09, -0.2631413775531142, 0.0012850319413042052], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.9587425087726456e-08, 1.3374323704230984e-08, 631498.9813920957, 328731.88393726025], "covariance": [[3.836672215672958e-16, 5.856609546550155e-26, 0.0003836004203415294, -0.00019968628424320173], [4.2285216207056054e-26, 1.788725345455548e-16, 4.395970761916294e-11, -3.9095296762267234e-12], [0.0003836004203415294, 4.395970761916294e-11, 398790963499.25446, -207593849857.48444], [-0.0001996862849896161, -5.4949634523953674e-12, -207593849857.48444, 108064651516.94034]]}