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
070014excellentexcellent21excellent
060015excellentexcellent21excellent
050012excellentexcellent21excellent
040012excellentexcellent11excellent
030010excellentexcellent11excellent
020010excellentexcellent11excellent
01009excellentexcellent11excellent
00007excellentexcellent11excellent
23007excellentexcellent11excellent
22006excellentexcellent11excellent
21005excellentexcellent11excellent
20004excellentexcellent11excellent
19004excellentexcellent11excellent
18003excellentexcellent11excellent
17003excellentexcellent11excellent
16003excellentexcellent11excellent
15008excellentexcellent11excellent
14003excellentexcellent11excellent
130018excellentexcellent11excellent
12002excellentexcellent11excellent
11004excellentexcellent11excellent
100010excellentexcellent21excellent
090020excellentexcellent61excellent
080059goodexcellent121excellent