As in PM10 (aerosol) (2)
As (aerosol) (4)
based on daily values (6)
based on yearly values (7)
based on variable time intervals (8)
based on monthly values (9)
based on weekly values (10)
based on daily values (12)
based on yearly values (13)
based on variable time intervals (14)
based on monthly values (15)
based on weekly values (16)
based on daily values (18)
based on yearly values (19)
based on variable time intervals (20)
based on monthly values (21)
based on weekly values (22)
based on daily values (24)
based on yearly values (25)
based on variable time intervals (26)
based on monthly values (27)
based on weekly values (28)
based on daily values (30)
based on yearly values (31)
based on variable time intervals (32)
based on monthly values (33)
based on weekly values (34)
Airbase_Stations (35)
 Background 
 Industrial 
 Traffic 
 Unknown 
 <all other values> 
