Statistical data set
Figure 11: Monthly mean PM2.5 concentration at roadside and urban background sites, 2023
Updated 30 April 2024
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| Site type | Month | Number of sites | Mean PM2.5 concentration (µg/m3) | 95% confidence interval for 'All sites' (+/-) |
|---|---|---|---|---|
| Urban Background | January | 56 | 8.684901741 | 0.535021367 |
| Urban Background | February | 58 | 9.829021144 | 0.539327973 |
| Urban Background | March | 56 | 6.365367007 | 0.351520365 |
| Urban Background | April | 56 | 9.458471891 | 0.30823835 |
| Urban Background | May | 58 | 7.687091011 | 0.239773301 |
| Urban Background | June | 54 | 8.174998064 | 0.287170283 |
| Urban Background | July | 55 | 4.470394335 | 0.231884108 |
| Urban Background | August | 52 | 4.40499411 | 0.249183205 |
| Urban Background | September | 59 | 8.590886701 | 0.409201499 |
| Urban Background | October | 57 | 6.274521828 | 0.240955764 |
| Urban Background | November | 57 | 7.016336954 | 0.359542059 |
| Urban Background | December | 59 | 6.532980882 | 0.307364284 |
| Urban Traffic | January | 20 | 8.808646242 | 1.230247694 |
| Urban Traffic | February | 22 | 10.00640132 | 1.353951661 |
| Urban Traffic | March | 23 | 7.013969625 | 0.771433011 |
| Urban Traffic | April | 24 | 9.583537543 | 0.78676457 |
| Urban Traffic | May | 22 | 7.979216504 | 0.652476755 |
| Urban Traffic | June | 21 | 8.928612749 | 0.74401574 |
| Urban Traffic | July | 21 | 5.086258874 | 0.687151067 |
| Urban Traffic | August | 21 | 5.140364718 | 0.780963399 |
| Urban Traffic | September | 21 | 9.177092265 | 1.200418178 |
| Urban Traffic | October | 23 | 6.801046294 | 0.727665383 |
| Urban Traffic | November | 23 | 7.432123745 | 0.727868178 |
| Urban Traffic | December | 23 | 6.908336695 | 0.717680848 |