Glossary H
Glossary H
Heating Degree-Day (HDD) is a measure of the need for heating based upon outdoor temperatures. Heating degree-days are calculated as follows:
Daily mean temperature minus 18.3 °C (65 °F)
Hechuan is a major city in China (261).
This city is on position 1992 (1999, 2008) in our monthly survey.
Hefei is a major city in China (216).
This city is on position 2080 (1837, 2007) in our monthly survey.
Hegang is a major city in China (734).
This city is on position 1885 (2097, 1327) in our monthly survey.
Hejian is a major city in China (663).
This city is on position 2105 (1192, 2045) in our monthly survey.
Helena, MT is a major city in USA.
This city is on position 903 (1495, 1099) in our monthly survey.
Helena, MT-Airport is an airport in Helena, MT/USA with the Airport Code HLN
This airport is on position 271 (387, 1776) in our monthly Top100 of World Airports