{"coeffs": [-6.968424231253793e-09, 4.205528172336267e-06, 0.5935695092990845, 0.13426737141963163], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.272867416246332e-08, 6.42490627743241e-07, 0.04105048225181147, 0.017165281393785783], "covariance": [[2.780313078931227e-15, -2.3430274036294378e-14, -1.4047264235173024e-09, -7.553346375504332e-10], [-2.3430274036294356e-14, 4.1279420673790384e-13, 2.6230913065988913e-08, 1.0368593868243873e-08], [-1.4047264235173005e-09, 2.6230913065988913e-08, 0.0016851420931062885, 0.0006560286820632387], [-7.553346375504326e-10, 1.0368593868243874e-08, 0.0006560286820632388, 0.0002946468853278484]]}