AMBIENT AIR QUALITY DATA
YEAR - 2004

Annual Average Concentration of Air Pollutants (in mg/m3 ) in Uttaranchal under National Air Quality Monitoring Programme (NAMP)

Table 1: Ambient Air Quality at Clock Tower (Residential Area), Dehradun during 2004.

S.No.

Parameter

Average

mg/m3

Std.

deviation

n

Air Quality

1

SO2

19

2

39

-

2

NO2

24

3

39

-

3

RSPM

146

66

53

C

4

SPM

296

118

47

-

 

Note:- R – Residential and other areas, I – Industrial area, Std deviation – Standard deviation,

n – number of days monitored for 16 and more hours a day

L- Low, M- Moderate, H – High and C – Critical levels of pollution based on exceedence factor