{"coeffs": [-2.516368982836276e-07, 4.7370782628795005e-09, -0.3306487625662087, 0.017912994407370944], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.249049608000617e-08, 2.7198670651415322e-08, 0.02994312978335007, 0.025962096369741387], "covariance": [[2.755252178725143e-15, -5.249415386656456e-17, 5.339563591110807e-10, -4.2224271147785045e-10], [-5.249415386656457e-17, 7.397676852041613e-16, 1.5533266633941963e-10, 1.3895506405294537e-10], [5.339563591110807e-10, 1.5533266633941965e-10, 0.000896591021222546, 4.816001712322829e-06], [-4.2224271147785045e-10, 1.3895506405294537e-10, 4.816001712322824e-06, 0.0006740304479117389]]}