{"coeffs": [-6.220289303998572e-07, -1.15281625164096e-08, -0.17572172682380965, 0.0636377852217662], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.773671934156968e-08, 3.324482353833635e-08, 0.024728611418205714, 0.022034915307424796], "covariance": [[2.2787943734957926e-15, -2.909599281505999e-16, 6.180182075043876e-10, -6.031804715813479e-10], [-2.909599281506e-16, 1.105218292095123e-15, 2.548409462960233e-10, 3.3509047473170715e-10], [6.180182075043876e-10, 2.548409462960233e-10, 0.0006115042226726141, -8.302230857546579e-05], [-6.03180471581348e-10, 3.3509047473170715e-10, -8.302230857546583e-05, 0.00048553749260538354]]}