What are the common ways to report water content in gases and liquids? Why are some more convenient for gases than liquids? There are a range of decomposition temperatures given for the decomposition...

What are the common ways to report water content in gases and liquids? Why are some more convenient for gases than liquids?

There are a range of decomposition temperatures given for the decomposition of TEG. What are the important factors in deciding the bottoms temperature for the TEG regenerator?