Align the section with the text in the Prerequisite as follows:
"The World Meteorological Organization website (worldweather.wmo.int) and other sources provide annual precipitation data for many sites. If precipitation data for the project location are unavailable, they must be estimated.

Evapotranspiration data are available through various government and academic sources. The Food and Agriculture Organization of the United Nations (fao.org/nr/water/eto.html) calculates reference evapotranspiration using a variety of algorithms based on monthly average weather data. The month with the largest deficit between reference evapotranspiration and rainfall is the peak watering month.

The international version of the WaterSense Water Budget Tool can be found on the USGBC website under this credit’s resources section (See International Tips, Canada)."