{"coeffs": [-1.2549780106217423e-07, -6.99852444152791e-09, -0.2790340068924107, 0.01735961753918453], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.577999057995405e-08, 2.8148764391076965e-08, 0.06477753952643732, 0.050120742054096994], "covariance": [[2.0958075375006813e-15, -3.183611441249056e-17, 9.691309017020968e-10, -6.592564703049585e-10], [-3.183611441249055e-17, 7.923529367443626e-16, 3.4565238099602254e-10, 2.4384266425818354e-10], [9.69130901702097e-10, 3.4565238099602254e-10, 0.0041961296270991485, -0.0002662220207752975], [-6.592564703049586e-10, 2.4384266425818354e-10, -0.00026622202077529743, 0.002512088784053327]]}