{"coeffs": [-7.143693179830719e-07, 6.420358784538644e-06, 0.8360286510845384, 0.23991486526890982], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.64178844367443e-07, 6.909595145537902e-07, 0.03428946156992439, 0.03392593014227473], "covariance": [[6.979046181131766e-14, -1.6225392375924234e-13, -6.645253279619131e-09, -8.646063584229832e-09], [-1.6225392375924393e-13, 4.774250507524094e-13, 2.2787111454890236e-08, 2.2759643588524797e-08], [-6.645253279619249e-09, 2.278711145489036e-08, 0.0011757671747553216, 0.001020584751315396], [-8.646063584229875e-09, 2.2759643588524698e-08, 0.0010205847513153853, 0.001150968736018505]]}