Variable indicators Units

N

Mean ± SE

SD

Range (min - max)

Air Quality Index (AQI) µg/m³

12

3.75 ± 0.46

1.6

1 - 6

Carbon monoxide (CO) µg/m³

12

232.56 ± 14.13

48.96

180 - 344

Nitrogen monoxide (NO) µg/m³

12

33.37 ± 22.47

77.83

0.1 - 200

Nitrogen (IV) oxide (NO₂) µg/m³

12

33.73 ± 22.42

77.66

0.13 - 200

Ozone (O₃) µg/m³

12

64.04 ± 6.51

22.56

29 - 100

Sulphur (IV) oxide (SO₂) µg/m³

12

3.73 ± 2.20

7.63

0.20 - 20

Ammonia (NH3) µg/m³

12

67.25 ± 44.82

155.43

0.01 - 400

Particulate matter (PM₁₀) µg/m³

12

115.36 ± 27.06

93.72

16 - 289

Particulate matter (PM2.5) µg/m³

12

65.69 ± 28.13

97.44

2.04 - 357

Temperature (T) ˚C

12

27.26 ± 1.33

4.61

23 - 39

Pressure (P) Hg

12

24.67 ± 3.33

11.54

1 - 30

Weather (W) degree

12

26.33 ± 1.13

3.92

20 - 32

Dew Point (DP) degree

12

13.15 ± 2.67

9.27

1 - 25

Wind speed (WS) m/s

12

17.13 ± 1.46

5.05

11 - 27

Humidity (H) %

12

61.83 ± 7.41

25.65

29 - 89