{"coeffs": [-1.185966295091776e-07, -2.1355712422236993e-09, -0.27566301608934257, 0.008477289722298609], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.012320651271748e-08, 1.270581272911917e-08, 0.03601707457540994, 0.018126620278011162], "covariance": [[4.049434403534752e-16, -8.531213773230459e-19, 2.4702808005388374e-10, -1.2020196382766287e-10], [-8.531213773230407e-19, 1.6143767710744673e-16, 5.335832444241069e-11, 1.7007417032065298e-11], [2.470280800538838e-10, 5.335832444241068e-11, 0.0012972296609706409, -0.0004084085008026596], [-1.2020196382766282e-10, 1.7007417032065298e-11, -0.00040840850080265946, 0.0003285743627032055]]}