Determining Relative Humidity from the Tables:
1. Select the proper table for the site elevation.
2. Secure the dry and wet bulb readings for the site.
3. Find the wet bulb temperature at the top of the table, then move down the column.
4. Find the dry bulb temperature at the left side of the table, then move horizontally to the right.
5. Find the intersection of the wet and dry bulb columns, which is a block with two numbers.
6. The lower number (blue) in the block is the relative humidity, the upper number (red) is the dew point temperature.
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