The lung-deposited surface area (LDSA) concentration of particles in the air describes the surface area of the particulate matter that settles in the deepest parts of the lungs, i.e. the alveoli. The results are available as a graph or table. The unit is µm2/cm3. The monitoring results are displayed hourly. In the graph, you can select the monitoring locations whose results you want to view. You can select a day, week, or month as the reference period. The monitoring results are unverified hourly averages.