{"coeffs": [-3.9632712064296225e-06, 0.5239920308418158, 2.580372287049306, 0.2263053955387851], "function": "fpl = lambda t, Cl, Cu, A, k: (Cl + ((Cu - Cl) / (1 + numpy.exp((A - t) / k))))", "log_ftol": 1e-06, "errors": [3.066578231815125e-06, 858.0481684988513, 372.431268727868, 0.052703844355894376], "covariance": [[9.403902051842378e-12, -0.0022897211985148445, -0.0009939715454164485, -1.5276474702002925e-07], [-0.0022897211992275717, 736246.6594642331, 319563.95700252993, 44.141948548091015], [-0.0009939715457303862, 319563.9570024784, 138705.04992624943, 19.160697921446612], [-1.5276474704376573e-07, 44.14194854205587, 19.16069791883089, 0.002777695209890339]]}