{"coeffs": [-1.6649719623405453e-07, -1.0751787366787867e-09, -0.22603517169303045, 0.03930053776917469], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.1357021910782696e-08, 2.0627147856896905e-08, 0.04756764005211607, 0.04131894146823048], "covariance": [[9.83262823113306e-16, -5.770143459664035e-17, 6.59359356131021e-10, -5.731050623226483e-10], [-5.770143459664035e-17, 4.254792287102866e-16, 2.622806305835183e-10, 2.669051326488578e-10], [6.593593561310209e-10, 2.6228063058351824e-10, 0.002262680380127677, -0.0002172702384742838], [-5.731050623226483e-10, 2.669051326488578e-10, -0.00021727023847428384, 0.0017072549240550563]]}