{"coeffs": [-1.257524455769166e-07, 3.933631255626948e-09, -0.29750145390688487, 0.013518785465588273], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.9777877389101576e-08, 2.249770876436688e-08, 0.04032814432541067, 0.04678254735746517], "covariance": [[1.5822795295823986e-15, -3.546941085187674e-17, 5.507089168082404e-10, -6.468248597169718e-10], [-3.5469410851876755e-17, 5.0614689964627025e-16, 1.0667730367019852e-10, 1.558863522051684e-10], [5.507089168082404e-10, 1.0667730367019854e-10, 0.0016263592247311527, -0.0005903020704367319], [-6.468248597169718e-10, 1.558863522051684e-10, -0.0005903020704367319, 0.002188606737253471]]}