{"coeffs": [-2.151923770021564e-07, -4.052930532778642e-09, -0.24163837214333425, 0.02401191601360299], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.780198812053694e-08, 2.4792296884545508e-08, 0.035509206394781695, 0.03070066674749117], "covariance": [[1.4289903058652159e-15, -4.3408211169561814e-17, 4.69440250350684e-10, -3.838969850157673e-10], [-4.3408211169561814e-17, 6.14657984811445e-16, 1.9719411101003147e-10, 1.7524357057587574e-10], [4.69440250350684e-10, 1.9719411101003147e-10, 0.001260903738787205, -5.9588554999008224e-05], [-3.838969850157673e-10, 1.7524357057587574e-10, -5.9588554999008264e-05, 0.0009425309387405101]]}