{"coeffs": [-1.7799782388541074e-07, -9.000792826116413e-10, -0.36164408895936534, 0.024612880591660516], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.295763678849927e-08, 1.3724293108962347e-08, 0.02780859849678548, 0.023630126763908826], "covariance": [[1.0862058226826405e-15, -2.702395255960176e-17, 4.4270937495261534e-10, -3.5241976970672665e-10], [-2.702395255960176e-17, 1.8835622134071135e-16, 6.763051143280651e-11, 6.862573424988799e-11], [4.4270937495261534e-10, 6.76305114328065e-11, 0.0007733181503554198, -0.00011792380067857284], [-3.5241976970672675e-10, 6.862573424988799e-11, -0.00011792380067857284, 0.0005583828908784002]]}