{"coeffs": [-4.6247346965979094e-07, -6.8009039830031465e-09, -0.2317306842376827, 0.032245812573597855], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.623137842828513e-08, 2.3549432254012846e-08, 0.018059725562183156, 0.0156562142471791], "covariance": [[1.3127127828136048e-15, -5.815715982994433e-17, 2.6635808492660504e-10, -2.2523857713349164e-10], [-5.815715982994432e-17, 5.545757594863405e-16, 1.0534690471417809e-10, 1.0072215474702983e-10], [2.6635808492660504e-10, 1.053469047141781e-10, 0.0003261536873813717, -2.655035475241145e-05], [-2.252385771334916e-10, 1.0072215474702983e-10, -2.6550354752411446e-05, 0.0002451170445535739]]}