{"coeffs": [-1.2300477664343544e-07, -6.1456593822815504e-09, -0.31798564973002835, 0.028133859822664913], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.132797596452447e-08, 5.400652647805997e-09, 0.01694799159835728, 0.01457060338555909], "covariance": [[1.283230394528441e-16, -4.057327509725818e-18, 8.969643923019705e-11, -7.341936450474668e-11], [-4.0573275097258164e-18, 2.916704902225392e-17, 1.8194425066628635e-11, 1.8561256375745197e-11], [8.969643923019705e-11, 1.8194425066628638e-11, 0.0002872344192179889, -3.926977979763926e-05], [-7.341936450474668e-11, 1.8561256375745197e-11, -3.926977979763926e-05, 0.000212302483019266]]}