{"coeffs": [-5.111956334735435e-06, 7.596373230970995e-05, 0.47899709272085134, 0.21123712497297797], "function": "fpl = lambda t, Cl, Cu, A, k: (Cl + ((Cu - Cl) / (1 + numpy.exp((A - t) / k))))", "log_ftol": 1e-08, "errors": [8.842353796826799e-07, 3.838189701500099e-06, 0.01732217142772592, 0.01178460199935216], "covariance": [[7.818722066825732e-13, -2.903920886290957e-12, -1.177701785999466e-08, -9.886603708907116e-09], [-2.90392088629096e-12, 1.473170018470142e-11, 6.561845998224828e-08, 4.360203338694239e-08], [-1.177701785999468e-08, 6.56184599822483e-08, 0.00030005762297152425, 0.00018780894917994208], [-9.886603708907123e-09, 4.360203338694236e-08, 0.0001878089491799419, 0.00013887684428313493]]}