{"coeffs": [-6.757280946644342e-08, 0.045317900644513236, 1.6931860089801298, 0.11607337185086061], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 9.9999999999999995e-08, "errors": [7.089545179308929e-09, 127.98871070459987, 328.12118189756865, 0.006011390282979014], "covariance": [[5.026165084946247e-17, -7.866488934004388e-07, -2.0167495372821764e-06, -3.994546990137851e-11], [-7.866488932882589e-07, 16381.110067825757, 41995.80699375872, 0.7533844979929198], [-2.016749536918049e-06, 41995.806993759186, 107663.51000985733, 1.9314470371542058], [-3.994546989761071e-11, 0.7533844980377966, 1.9314470372700545, 3.6136813134294504e-05]]}