{"coeffs": [-4.911750381029504e-08, 0.3905978674271568, 2.1292967240856546, 0.13209014763731688], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.40826139557334e-08, 58337.72621782791, 19750.312990940776, 0.05286660490340223], "covariance": [[5.488233690514226e-15, -0.00386093932857434, -0.001307129787175439, -3.738511403650098e-09], [-0.0038609394895490513, 3403290300.266246, 1152188351.9586785, 3026.991640425714], [-0.001307129841746993, 1152188351.9580023, 390074863.240124, 1024.7932310167666], [-3.73851148496196e-09, 3026.991586194641, 1024.7932126586593, 0.002794877914012433]]}