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
030017excellentexcellent21excellent
020019excellentexcellent21excellent
010023goodexcellent21excellent
000027goodexcellent21excellent
230025goodexcellent21excellent
220012excellentexcellent21excellent
210012excellentexcellent11excellent
20006excellentexcellent11excellent
19003excellentexcellent11excellent
18005excellentexcellent11excellent
17005excellentexcellent11excellent
16006excellentexcellent11excellent
15007excellentexcellent11excellent
140010excellentexcellent11excellent
13008excellentexcellent11excellent
12008excellentexcellent11excellent
11008excellentexcellent11excellent
10007excellentexcellent11excellent
09007excellentexcellent11excellent
080012excellentexcellent21excellent
070026goodexcellent41excellent
060041goodexcellent21excellent
050038goodexcellent11excellent
040041goodexcellent21excellent