Table 2.

Factors influencing the emissions.

Factors influencing NOx, PM10 and PM2.5		Stations
		a	b	c	d	e	f	g	h	i	j	k	l
1	Vehicle exhaust	–		–	–	–	–	–	–	–	–	–	–
2	Construction dust	–	–		–	–	–	–	–	–	–	–	–
3	On-road dust	–	–	–	–	–	–	–	–	–	–	–	–
4	Industries				–				–
5	IT company		–	–			–		–
6	Population	–	–	–	–	–	–	–	–	–	–	–	–
7	Vehicular traffic	–	–	–	–	–	–	–	–	–			–
8	National highway		–	–	–				–				–
9	Metro construction	–		–	–	–	–		–				–
10	Fly over construction		–		–				–
11	Burning of waste			–	–	–	–	–	–	–
12	Transportation	–	–	–	–	–	–	–	–	–	–	–	–
13	Burning of fossil fuels	–	–		–	–		–	–
14	Microbial decaying process				–	–			–
15	Demolition	–			–	–			–
16	Indoor air pollution	–	–		–	–		–	–	–	–	–