Read the number of high pollution nights during previous years across our monitoring sites in Canterbury.
Number of high pollution nights during previous years:
|
|
1999
|
2000
|
2001
|
2002
|
2003
|
2004
|
2005
|
2006
|
2007
|
2008
|
2009
|
|
Rangiora
|
10
|
7
|
|
|
|
6
|
9
|
15
|
4
|
6
|
3
|
|
Kaiapoi
|
|
|
39
|
29
|
35
|
17
|
17
|
28
|
19
|
19
|
24
|
|
Christchurch
(St Albans)
|
50
|
31
|
51
|
28
|
35
|
36
|
32
|
27
|
14
|
18
|
13
|
|
Ashburton
|
13
|
16
|
|
|
|
|
18
|
25
|
13
|
15
|
9
|
|
Timaru
|
48
|
50
|
48
|
33
|
50
|
39
|
46
|
36
|
36
|
37
|
38
|
|
Waimate
|
|
|
|
1
|
6
|
|
|
10
|
0
|
7
|
10
|
|
Geraldine
|
|
|
|
|
5
|
3
|
|
|
2
|
6
|
8
|
Highest daily concentrations of PM10 during previous years:
|
|
1999
|
2000
|
2001
|
2002
|
2003
|
2004
|
2005
|
2006
|
2007
|
2008
|
2009
|
|
Rangiora
|
87
|
97
|
|
|
|
78
|
99
|
138
|
107
|
61
|
88*
|
|
Kaiapoi
|
|
|
153
|
138
|
163
|
99
|
152
|
161
|
104
|
86
|
86
|
|
Christchurch
(St Albans)
|
194
|
182
|
220
|
214
|
136
|
135
|
147
|
184
|
120
|
87
|
85
|
|
Ashburton
|
94
|
97
|
|
|
|
|
89
|
136
|
90
|
90
|
128*
|
|
Timaru
|
152
|
162
|
154
|
107
|
155
|
117
|
109
|
190
|
128
|
109
|
134
|
|
Waimate
|
|
|
|
51
|
82
|
|
|
95
|
50
|
59
|
112*
|
|
Geraldine
|
|
|
|
|
63
|
55
|
|
|
55
|
72
|
94*
|
Second highest daily concentrations of PM10 during previous years:
|
|
1999
|
2000
|
2001
|
2002
|
2003
|
2004
|
2005
|
2006
|
2007
|
2008
|
2009
|
|
Rangiora
|
77
|
95
|
|
|
|
67
|
78
|
102
|
74
|
59
|
54
|
|
Kaiapoi
|
|
|
126
|
126
|
116
|
89
|
94
|
145
|
90
|
85
|
84*
|
|
Christchurch
(St Albans)
|
179
|
143
|
174
|
163
|
135
|
135
|
141
|
172
|
99
|
85
|
82
|
|
Ashburton
|
79
|
85
|
|
|
|
|
80
|
104
|
72
|
84
|
76
|
|
Timaru
|
109
|
142
|
131
|
106
|
122
|
110
|
107
|
130
|
99
|
96
|
124
|
|
Waimate
|
|
|
|
50
|
73
|
|
|
62
|
44
|
59
|
89
|
|
Geraldine
|
|
|
|
|
56
|
54
|
|
|
51
|
59
|
67
|
* September 14th 2009 Dust Event