This standard covers weather data used in ASHRAE standards@ including dry-bulb@ dew-point@ and wet-bulb temperatures; enthalpy; humidity ratio; wind conditions; solar irradiation; latitude; longitude; and elevation for locations worldwide. This standard also includes statistical data@ such as mean temperatures@ average temperatures@ mean/median annual extremes@ daily ranges@ heating and cooling degree-days and degree-hours@ and hours and seasonal percentages within ranges of temperatures as well as bins.PURPOSE This standard provides recognized weather data for use in building-design and related equipment standards.
ASHRAE 169-2006 ERTA-2009 history
2013ASHRAE 169-2013 Climatic Data for Building Design Standards