{"coeffs": [-2.8666420377253423e-07, -8.907218758024728e-10, -0.32261769264997686, 0.07085460200558302], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.1111213764466305e-08, 1.3608351260285583e-08, 0.03974834776060446, 0.030634642433036312], "covariance": [[2.61235617247697e-15, -1.7876878200483281e-16, 1.6943719304636826e-09, -1.21390015137446e-09], [-1.787687820048328e-16, 1.851872240233162e-16, 1.1468381499184364e-11, 1.8630644003213035e-10], [1.6943719304636824e-09, 1.146838149918431e-11, 0.0015799311496979493, -0.0007160103298901434], [-1.2139001513744598e-09, 1.863064400321304e-10, -0.0007160103298901433, 0.0009384813169999889]]}