{"coeffs": [-4.818625072290876e-07, -3.1405715996453113e-09, -0.3017650959979679, 0.0008780531104655855], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.5124591493852726e-07, 9.261896810368809e-08, 465832.4537942936, 356195.5315311696], "covariance": [[2.2875326785592224e-14, 2.083324228039916e-31, -7.027300362461411e-11, 1.1951187423746718e-10], [1.7857064811770705e-31, 8.578273252591992e-15, -2.1081901087384232e-10, 2.5241991960611986e-10], [-7.027300362461411e-11, -1.4054600724922822e-10, 216999875008.01263, -165927438483.72736], [1.4054600724922822e-10, 2.1081901087384232e-10, -165927438483.7274, 126875256682.77243]]}