{"coeffs": [-9.161040197062708e-06, 0.9555466072886725, 9.023851629237036, 0.7639831377914813], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.5416739658177632e-05, 171031.18414926753, 137419.578222327, 2.758332246937288], "covariance": [[2.376758616880269e-10, -2.538313875179632, -2.0394915259012074, -4.205324228178116e-05], [-2.538313817717554, 29251665951.500664, 23503033179.659367, 467694.4920941425], [-2.0394914797472397, 23503033179.713028, 18884140478.80225, 375783.01739986194], [-4.205324180658213e-05, 467694.49720257695, 375783.0215037131, 7.608396784494108]]}