Table 2.

Characteristics of ground-based sites measuring Hg^P.

Long name	Short name	Lat	Long	Elev. (m)
Amsterdam Island	AMD	−37.8	77.58	70
Cape Hedo	CHE	26.86	128.25	60
Longobucco	LON	39.39	16.61	1379
Manaus	MAN	−2.89	−59.97	110
Mauna Loa	MAU	19.54	−155.58	3399
Mt. Changbai	MCH	42.4	128.11	741
Mt. Waliguan	MWA	36.29	100.9	3816
Rao	RAO	57.39	11.91	5