{"coeffs": [-8.268477566037384e-07, 1.998732499289e-08, -0.2680856493860609, 0.12399911327145685], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [9.305007911532443e-08, 2.6985687263077197e-08, 0.033283741416022763, 0.02602623462489148], "covariance": [[8.658317223368136e-15, -1.2778112529790426e-15, 2.7943898674976996e-09, -2.096605749265243e-09], [-1.2778112529790422e-15, 7.282273170606069e-16, -1.8754430673895802e-10, 5.026096563452181e-10], [2.7943898674976996e-09, -1.875443067389582e-10, 0.0011078074426486692, -0.0006029277156411046], [-2.096605749265243e-09, 5.026096563452183e-10, -0.0006029277156411045, 0.0006773648887499001]]}