{"coeffs": [-1.0147627394061023e-07, 2.743403017719241e-06, 0.44850055856670407, 0.14962479707153475], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [8.266480668092905e-08, 2.356149695823482e-07, 0.02328852463871727, 0.020820686936399088], "covariance": [[6.8334702635953726e-15, -1.4447868853570127e-14, -9.103036686210103e-10, -1.5350934595945486e-09], [-1.4447868853570124e-14, 5.5514413891290873e-14, 5.098654499141288e-09, 4.563310299163152e-09], [-9.103036686210098e-10, 5.098654499141287e-09, 0.0005423553798481414, 0.0003749522040751532], [-1.5350934595945486e-09, 4.563310299163152e-09, 0.0003749522040751532, 0.00043350100450353967]]}