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
080021goodexcellent21excellent
070025goodexcellent21excellent
060022goodexcellent31excellent
050018excellentexcellent21excellent
040021goodexcellent21excellent
030021goodexcellent21excellent
020019excellentexcellent21excellent
010023goodexcellent21excellent
000020excellentexcellent21excellent
230015excellentexcellent21excellent
220013excellentexcellent21excellent
210012excellentexcellent21excellent
20007excellentexcellent11excellent
19007excellentexcellent11excellent
18008excellentexcellent11excellent
170012excellentexcellent11excellent
160032goodexcellent11excellent
15007excellentexcellent11excellent
14008excellentexcellent11excellent
13008excellentexcellent11excellent
12006excellentexcellent11excellent
11009excellentexcellent11excellent
10009excellentexcellent11excellent
090011excellentexcellent21excellent