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Figure 7.15: Annual lead levels in Auckland and Christchurch, 1975–2005

Return to the point in the document where this figure is located.

Note:

µg/m3 = micrograms per cubic metre.

Data source: Auckland Regional Council, 2006a; Ministry for the Environment, 2006c.

Text description of figure

Year

Penrose I, III & II

Mount Eden I & II

Queen Street I & II

Packe St

 

Average (µg/m3)

Average (µg/m3)

Average (µg/m3)

Average (µg/m3)

1964

0.4

 

 

 

1968

0.6

 

 

 

1970

0.6

 

 

 

1973

0.8

 

 

 

1974

0.8

 

 

 

1975

0.7

0.4

1.6

 

1976

0.8

0.5

2.4

 

1977

0.5

0.3

1.6

 

1978

0.8

0.5

2.2

 

1979

0.6

0.4

1.6

 

1980

0.5

0.4

1.7

 

1981

0.6

0.4

1.8

 

1982

0.6

0.3

1.6

 

1983

0.7

0.5

 

 

1984

0.7

0.4

1.4

 

1985

0.8

0.4

1.4

 

1986

0.7

0.4

1.4

 

1987

0.5

0.3

1.0

 

1988

0.4

0.3

0.8

 

1989

0.5

0.2

0.7

 

1990

0.4

0.3

0.7

 

1991

0.3

0.2

0.5

 

1992

0.3

0.2

0.5

 

1993

0.2

0.1

0.3

 

1994

0.18

0.12

0.29

 

1995

0.17

0.10

0.23

 

1996

0.05

0.03

0.06

0.062

1997

0.03

0.02

0.04

0.071

1998

0.03

0.02

0.04

0.055

1999

0.02

0.03

0.02

0.076

2000

0.02

0.02

 

0.053

2001

0.01

0.01

 

0.005

2002

0.01

0.05

 

0.052

2003

0.01

0.01

 

 

2004

 

 

 

 

2005

0.01