{"coeffs": [-4.233755777382953e-07, -3.244127000627308e-08, -0.17521600324353903, 0.06785153224115961], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.119088291148927e-08, 2.823600551314939e-08, 0.03378623401722212, 0.030305707058903477], "covariance": [[1.696688835028019e-15, -2.3755969895360344e-16, 7.535541727485782e-10, -7.475420175813804e-10], [-2.375596989536034e-16, 7.972720073386029e-16, 2.919613263455234e-10, 4.115565797470551e-10], [7.535541727485782e-10, 2.919613263455234e-10, 0.0011415096090664969, -0.00017254563582037814], [-7.475420175813803e-10, 4.115565797470551e-10, -0.00017254563582037817, 0.0009184358803400721]]}