{"coeffs": [-0.7636680971290586, -0.00716558200950446, -0.20454850143612754, 0.13517202273986842], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.867521977492764e-07, 1.8887420333190702e-07, 1.9800500431091297e-07, 1.8010312341774967e-07], "covariance": [[0.05153656877567494, -0.012133469679334511, 0.018183498698082622, -0.016654608494214213], [-0.012133469679334513, 0.007759700324364801, -0.0018299897737866736, 0.00604014477882697], [0.01818349869808262, -0.001829989773786674, 0.008528094253158681, -0.004933748827147506], [-0.016654608494214213, 0.006040144778826969, -0.004933748827147507, 0.007055733153809952]]}