How Do You Read A Psychrometric Chart Review

Once you have your point, trace lines to each axis to extract data:

The vertical axis on the right-hand side. What it is: The actual mass of water vapor per unit mass of dry air. Usually measured in grains of moisture per pound of dry air (gr/lb) or grams per kilogram. How to read: Find the number on the right. Follow the horizontal line to the left. This tells you exactly how much water is physically in the air. how do you read a psychrometric chart