{"coeffs": [-6.148624946853666e-07, -3.5935562693426584e-08, -0.2520407441707847, 0.001903641224198654], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.3563163056762882e-07, 9.590828889789403e-08, 20046.620370635563, 47847.038622949665], "covariance": [[1.8395939210433747e-14, 3.999534804561611e-18, 3.2367792985606292e-06, 7.725153894331365e-06], [3.999534559348107e-18, 9.198399879321904e-15, 0.000496590479266597, 0.001185256229222897], [3.236778620426671e-06, 0.0004965904792848605, 401866988.28438073, 959171419.1333804], [7.72515334894665e-06, 0.0011852562290714012, 959171419.1333804, 2289339104.9860373]]}