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
030024goodexcellent31excellent
020025goodexcellent31excellent
010022goodexcellent21excellent
000021goodexcellent21excellent
230021goodexcellent21excellent
220020excellentexcellent21excellent
210014excellentexcellent11excellent
200012excellentexcellent11excellent
190011excellentexcellent11excellent
180012excellentexcellent21excellent
170015excellentexcellent21excellent
160021goodexcellent21excellent
150021goodexcellent21excellent
140014excellentexcellent21excellent
130013excellentexcellent21excellent
120011excellentexcellent11excellent
110012excellentexcellent11excellent
10009excellentexcellent11excellent
090015excellentexcellent31excellent
080021goodexcellent31excellent
070020excellentexcellent31excellent
060017excellentexcellent21excellent
050012excellentexcellent21excellent
040010excellentexcellent21excellent