I analyzed uncertainty analysis of 2 port measurement. I referenced 2 book "Transmission Reflection and Short Circuit Line Methods for Measuring Permittivity and Permeability" at pages 31 equation(2.83) "Transmission and Reflection and SCL Permittivity Measurements" at pages 44 equation(2.67) You can google 2 book name to find them. I plot equation(2.83) and equation(2.67) but they look different. blue line is equation(2.67) and green line is equation(2.67) Do they describe the same thing? Why are the results different?