{"coeffs": [-2.7889987235155875e-07, 6.589040732863855e-09, -0.2738287943457225, 0.022844413005280097], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.220793479183063e-08, 1.908146242658635e-08, 0.020538812132392555, 0.017422741297650122], "covariance": [[1.037351063554814e-15, -2.6672255731738983e-17, 2.4385580226531515e-10, -1.9237148536981245e-10], [-2.667225573173898e-17, 3.6410220833722664e-16, 8.176037379434029e-11, 7.095765939079462e-11], [2.4385580226531515e-10, 8.176037379434028e-11, 0.0004218428038097156, -2.8384066567721202e-05], [-1.923714853698124e-10, 7.095765939079462e-11, -2.8384066567721185e-05, 0.00030355191432484305]]}