{"coeffs": [-1.749466233554776e-08, 5.317559779576597e-07, 0.2677253200575119, 0.09072857118091694], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.022514396586945e-08, 6.414740970794545e-07, 0.23060227174738357, 0.08678465219564883], "covariance": [[9.135593277575344e-16, -7.432695928327192e-15, -2.3808647000536243e-09, -1.390442212353908e-09], [-7.4326959283272e-15, 4.114890172239014e-13, 1.4652625152920332e-07, 5.0601883072908365e-08], [-2.3808647000536243e-09, 1.4652625152920332e-07, 0.05317740773505414, 0.01821667513591701], [-1.3904422123539072e-09, 5.0601883072908365e-08, 0.01821667513591701, 0.007531575856719736]]}