Ambient Air Quality of Silchar for January 2009

Location
Type of Area
Sulphur dioxide
Nitrogen dioxide
Respirable Suspended Particulate Matter
Suspended Particulate Matter
n
Max.
Avg.
Std. Dev.
n

Max.

Avg.

Std. Dev.
n
Max.
Avg.
Std. Dev.
n
Max.
Avg. Std. Dev.
Office Building RLO, Ithkola Market, Ghaniwala Rd., Silchar Assam
R
4 11.50 7.75 3.09 4 14.00 13.19 2.14 4 64.00 60.63 14.67 4 113.00 107.63

24.52

Note:- R – Residential and Other Areas

Avg. – Average concentration in mg/m3 , Std Dev. – standard deviation, n – number of days for which monitoring is carried out for 16 hours a day


Ambient Air Quality of Silchar for February 2009

Location
Type of Area
Sulphur dioxide
Nitrogen dioxide
Respirable Suspended Particulate Matter
Suspended Particulate Matter
n
Max.
Avg.
Std. Dev.
n

Max.

Avg.

Std. Dev.
n
Max.
Avg.
Std. Dev.
n
Max.
Avg. Std. Dev.
Office Building RLO, Ithkola Market, Ghaniwala Rd., Silchar Assam
R
8 5.50 5.00 1.59 8 15.00 11.20 3.65 8 114.00 74.50 36.03 8 187.50 132.69 53.42

Note:- R – Residential and Other Areas

Avg. – Average concentration in mg/m3 , Std Dev. – standard deviation, n – number of days for which monitoring is carried out for 16 hours a day


Ambient Air Quality of Silchar for March 2009

Location
Type of Area
Sulphur dioxide
Nitrogen dioxide
Respirable Suspended Particulate Matter
Suspended Particulate Matter
n
Max.
Avg.
Std. Dev.
n

Max.

Avg.

Std. Dev.
n
Max.
Avg.
Std. Dev.
n
Max.
Avg. Std. Dev.
Office Building RLO, Ithkola Market, Ghaniwala Rd., Silchar Assam
R
8 9.00 6.38 1.96 8 15.25 13.53 2.66 8 178.50 94.13 43.92 8 214.00 148.38 40.42

Note:- R – Residential and Other Areas

Avg. – Average concentration in mg/m3 , Std Dev. – standard deviation, n – number of days for which monitoring is carried out for 16  hours a day.

Ambient Air Quality of Silchar for April 2009

Location
Type of Area
Sulphur dioxide
Nitrogen dioxide
Respirable Suspended Particulate Matter
Suspended Particulate Matter
n
Max.
Avg.
Std. Dev.
n

Max.

Avg.

Std. Dev.
n
Max.
Avg.
Std. Dev.
n
Max.
Avg. Std. Dev.
Office Building RLO, Ithkola Market, Ghaniwala Rd., Silchar Assam
R
5 7.50 6.00 1.92 5 17.00 14.38 3.51 5 206.50 74.20 70.49 5 382.50 135.00

131.49

Note:- R – Residential and Other Areas

Avg. – Average concentration in mg/m3 , Std Dev. – standard deviation, n – number of days for which monitoring is carried out for 16 hours a day


Ambient Air Quality of Silchar for May 2009

Location
Type of Area
Sulphur dioxide
Nitrogen dioxide
Respirable Suspended Particulate Matter
Suspended Particulate Matter
n
Max.
Avg.
Std. Dev.
n

Max.

Avg.

Std. Dev.
n
Max.
Avg.
Std. Dev.
n
Max.
Avg. Std. Dev.
Office Building RLO, Ithkola Market, Ghaniwala Rd., Silchar Assam
R
6 5.00 3.83 1.40 6 17.75 13.19 3.60 6 68.00 49.67 14.31 6 119.00 98.67 26.41

Note:- R – Residential and Other Areas

Avg. – Average concentration in mg/m3 , Std Dev. – standard deviation, n – number of days for which monitoring is carried out for 16 hours a day


Ambient Air Quality of Silchar for June 2009

Location
Type of Area
Sulphur dioxide
Nitrogen dioxide
Respirable Suspended Particulate Matter
Suspended Particulate Matter
n
Max.
Avg.
Std. Dev.
n

Max.

Avg.

Std. Dev.
n
Max.
Avg.
Std. Dev.
n
Max.
Avg. Std. Dev.
Office Building RLO, Ithkola Market, Ghaniwala Rd., Silchar Assam
R
8 7.75 5.91 1.75 8 19.75 17.03 4.00 8 73.00 48.31 22.54 8 110.00 77.94 27.29

Note:- R – Residential and Other Areas

Avg. – Average concentration in mg/m3 , Std Dev. – standard deviation, n – number of days for which monitoring is carried out for 16  hours a day.

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