{"coeffs": [-2.7426562031079023e-07, 7.525176940348957e-09, -0.3322950270789259, 0.016274477221310403], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.1746761695901295e-08, 2.1847585158088355e-08, 0.020614266221271233, 0.01872953426594997], "covariance": [[1.7427921120943714e-15, -3.2544826230900464e-17, 2.647341487829052e-10, -2.2242154987433058e-10], [-3.254482623090047e-17, 4.773169772399226e-16, 8.59861706119135e-11, 8.123344182879064e-11], [2.647341487829051e-10, 8.598617061191349e-11, 0.00042494797184144413, 2.843590407695103e-05], [-2.2242154987433058e-10, 8.123344182879062e-11, 2.8435904076951043e-05, 0.00035079545381939406]]}