Test variable A

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Question

A simple test variable that defines a table of sample data and stores it into Opasnet Base?

Answer

Number of Helsinki inhabitants living in areas of traffic noise, per zone and noise source[1]

Result

Data from 2007 strategic noise mapping by the City of Helsinki (calculated from 2006 population and traffic data):

Test variable A: Difference between revisions(-)

Obs	Indicator	Lower bound (dB)	Upper bound (dB)	Road	Train	Tram	Subway	Aviation	Description
1	Lden	55	59	87 200	10 300	11 500	5 700	500
2	Lden	60	64	88 700	3 600	18 800	3 000	0
3	Lden	65	69	46 600	2 600	13 00	900	0
4	Lden	70	74	14 900	200	0	0	0
5	Lden	75		100	0	0	0	0
6	Lden	55		237 500	16 700	43 400	9 600	500
7	Lnight	50	54	90 200	5 200	17 900	4 500	0
8	Lnight	55	59	49 900	3 000	16 800	1 700	0
9	Lnight	60	64	21 700	800	1 200	0	0
10	Lnight	65	69	400	0	0	0	0
11	Lnight	70		0	0	0	0	0
12	Lnight	50		162 200	9 000	35 900	6 200	0

Number of Helsinki inhabitants living in areas of traffic noise, per zone and noise source[2]

Indicator	Lower bound (dB)	Upper bound (dB)	Road	Train	Tram	Subway	Aviation
Lden	55	59	87 200	10 300	11 500	5 700	500
Lden	60	64	88 700	3 600	18 800	3 000	0
Lden	65	69	46 600	2 600	13 100	900	0
Lden	70	74	14 900	200	0	0	0
Lden	75		100	0	0	0	0
Lden	55		237 500	16 700	43 400	9 600	500
Lnight	50	54	90 200	5 200	17 900	4 500	0
Lnight	55	59	49 900	3 000	16 800	1 700	0
Lnight	60	64	21 700	800	1 200	0	0
Lnight	65	69	400	0	0	0	0
Lnight	70		0	0	0	0	0
Lnight	50		162 200	9 000	35 900	6 200	0

Related files

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Test variable A. Opasnet . [3]. Accessed 11 Mar 2026.