Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
07009excellentexcellent21excellent
060018excellentexcellent21excellent
050015excellentexcellent31excellent
040018excellentexcellent31excellent
030018excellentexcellent31excellent
020021goodexcellent41excellent
010025goodexcellent31excellent
000021goodexcellent41excellent
230018excellentexcellent31excellent
220011excellentexcellent31excellent
21008excellentexcellent21excellent
20009excellentexcellent21excellent
19005excellentexcellent11excellent
18003excellentexcellent11excellent
17004excellentexcellent11excellent
160014excellentexcellent11excellent
15006excellentexcellent11excellent
140020excellentexcellent11excellent
130029goodexcellent11excellent
12005excellentexcellent11excellent
11007excellentexcellent11excellent
100018excellentexcellent11excellent
090014excellentexcellent31excellent
080021goodexcellent51excellent