# Temperature-efficiency ratio

From Glossary of Meteorology

## temperature-efficiency ratio

(Abbreviated T-E ratio.) For a given location and month, a measure of thermal efficiency equal to the departure of the normal monthly temperature above 32°F divided by 4: where

*T*is the normal monthly temperature in degrees Fahrenheit, except that all values below 32° are counted as 32°. No dimensions are assigned to this ratio.