{"coeffs": [-1.6615241612741217e-07, -5.874590555523089e-09, -0.3537819412725281, 0.028574413632569778], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.955930972525238e-08, 1.1641891328708973e-08, 0.028778615348567307, 0.024604643923057782], "covariance": [[8.737527914333998e-16, -2.6102986169894762e-17, 4.527190087828897e-10, -3.668031696226094e-10], [-2.6102986169894756e-17, 1.3553363370946918e-16, 5.863879017767726e-11, 6.670100800669556e-11], [4.527190087828897e-10, 5.863879017767726e-11, 0.0008282087013807938, -0.00015983232212628192], [-3.668031696226094e-10, 6.670100800669556e-11, -0.0001598323221262819, 0.0006053885025804642]]}