{"coeffs": [-8.288621723033201e-07, -1.6075195342540197e-09, -0.35102427289726573, 0.07925310346595865], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.6897869794643063e-07, 3.1640474909342355e-08, 0.04475922830608608, 0.030316008437454533], "covariance": [[2.855380035967104e-14, -1.6382893477129362e-15, 6.890073877299127e-09, -4.249587701410076e-09], [-1.6382893477129364e-15, 1.001119652488723e-15, -1.4236481622761925e-10, 4.647129518095765e-10], [6.890073877299126e-09, -1.42364816227619e-10, 0.0020033885185563372, -0.0009745817334848112], [-4.249587701410077e-09, 4.647129518095764e-10, -0.0009745817334848116, 0.0009190603675798144]]}