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http://app2.nea.gov.sg/psi.aspx
Ambient Air Quality <TABLE border=0 cellSpacing=0 cellPadding=0 width=530><TBODY><TR><TD width=79> </TD><TD width=451> </TD></TR><TR><TD height=5 vAlign=top></TD><TD vAlign=top></TD></TR><TR><TD vAlign=top colSpan=2></TD></TR><TR><TD vAlign=top colSpan=2>24-hr PSI Readings At 4 PM on 08 Mar 2010
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</TD><TD bgColor=#ffffff height=10><TABLE class=text_sml border=0 cellSpacing=1 cellPadding=4 width="100%"><TBODY><TR><TD bgColor=#e2e2e2 rowSpan=2 width="16%" align=middle>Region</TD><TD bgColor=#cae3f0 colSpan=5 align=middle>24-hour Sub-Index at 4 PM on 08 Mar 2010</TD><TD bgColor=#e2e2e2 rowSpan=2 width="23%" align=middle>PSI*</TD><TD bgColor=#e2e2e2 rowSpan=2 width="23%" align=middle>Air Quality Descriptor</TD><TD bgColor=#e2e2e2 rowSpan=2 width="23%" align=middle>Responsible Pollutant</TD></TR><TR><TD bgColor=#e2e2e2 width="61%">Sulphur Dioxide</TD><TD bgColor=#e2e2e2 width="23%" align=middle>PM10</TD><TD bgColor=#e2e2e2 width="23%" align=middle>Ozone</TD><TD bgColor=#e2e2e2 width="23%" align=middle>Carbon Monoxide</TD><TD bgColor=#e2e2e2 width="23%" align=middle>Nitrogen Dioxide+</TD></TR><TR><TD bgColor=#ffffff align=middle>North</TD><TD bgColor=#ffffff align=middle>6</TD><TD bgColor=#ffffff align=middle>46</TD><TD bgColor=#ffffff align=middle>32</TD><TD bgColor=#ffffff align=middle>8</TD><TD bgColor=#ffffff align=middle>-</TD><TD bgColor=#ffffff align=middle>46</TD><TD bgColor=#ffffff align=middle>Good</TD><TD bgColor=#ffffff align=middle>PM10</TD></TR><TR><TD bgColor=#cae3f0 align=middle>South</TD><TD bgColor=#cae3f0 align=middle>4</TD><TD bgColor=#cae3f0 align=middle>40</TD><TD bgColor=#cae3f0 align=middle>27</TD><TD bgColor=#cae3f0 align=middle>9</TD><TD bgColor=#cae3f0 align=middle>-</TD><TD bgColor=#cae3f0 align=middle>40</TD><TD bgColor=#cae3f0 align=middle>Good</TD><TD bgColor=#cae3f0 align=middle>PM10</TD></TR><TR><TD bgColor=#ffffff align=middle>East</TD><TD bgColor=#ffffff align=middle>2</TD><TD bgColor=#ffffff align=middle>30</TD><TD bgColor=#ffffff align=middle>21</TD><TD bgColor=#ffffff align=middle>4</TD><TD bgColor=#ffffff align=middle>-</TD><TD bgColor=#ffffff align=middle>30</TD><TD bgColor=#ffffff align=middle>Good</TD><TD bgColor=#ffffff align=middle>PM10</TD></TR><TR><TD bgColor=#cae3f0 align=middle>West</TD><TD bgColor=#cae3f0 align=middle>9</TD><TD bgColor=#cae3f0 align=middle>40</TD><TD bgColor=#cae3f0 align=middle>39</TD><TD bgColor=#cae3f0 align=middle>5</TD><TD bgColor=#cae3f0 align=middle>-</TD><TD bgColor=#cae3f0 align=middle>40</TD><TD bgColor=#cae3f0 align=middle>Good</TD><TD bgColor=#cae3f0 align=middle>PM10</TD></TR><TR><TD bgColor=#ffffff align=middle>Central</TD><TD bgColor=#ffffff align=middle>1</TD><TD bgColor=#ffffff align=middle>42</TD><TD bgColor=#ffffff align=middle>5</TD><TD bgColor=#ffffff align=middle>4</TD><TD bgColor=#ffffff align=middle>-</TD><TD bgColor=#ffffff align=middle>42</TD><TD bgColor=#ffffff align=middle>Good</TD><TD bgColor=#ffffff align=middle>PM10</TD></TR><TR><TD bgColor=#cae3f0 align=middle>Overall Singapore*</TD><TD bgColor=#cae3f0 align=middle>9</TD><TD bgColor=#cae3f0 align=middle>46</TD><TD bgColor=#cae3f0 align=middle>39</TD><TD bgColor=#cae3f0 align=middle>9</TD><TD bgColor=#cae3f0 align=middle>-</TD><TD bgColor=#cae3f0 align=middle>46</TD><TD bgColor=#cae3f0 align=middle>Good</TD><TD bgColor=#cae3f0 align=middle>PM10</TD></TR></TBODY></TABLE></TD><TD background=images/border_content_right.gif>
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Note:
A sub-index value of 1 to 50 of a pollutant indicates that the level of the air pollutant for the day is in the good range and within the USEPA annual mean ambient air quality standard. A sub-index of 51 to 100 indicates the level of the air pollutant is in the moderate range, but still within the USEPA 24-hr ambient air quality standard.
+Sub-index for Nitrogen Dioxide is reported only when the one-hour Nitrogen Dioxide concentration exceeds 1130 µg/m3.
*Based on the highest indices in accordance with the USEPA guidelines for PSI reporting.
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Ambient Air Quality <TABLE border=0 cellSpacing=0 cellPadding=0 width=530><TBODY><TR><TD width=79> </TD><TD width=451> </TD></TR><TR><TD height=5 vAlign=top></TD><TD vAlign=top></TD></TR><TR><TD vAlign=top colSpan=2></TD></TR><TR><TD vAlign=top colSpan=2>24-hr PSI Readings At 4 PM on 08 Mar 2010
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Note:
A sub-index value of 1 to 50 of a pollutant indicates that the level of the air pollutant for the day is in the good range and within the USEPA annual mean ambient air quality standard. A sub-index of 51 to 100 indicates the level of the air pollutant is in the moderate range, but still within the USEPA 24-hr ambient air quality standard.
+Sub-index for Nitrogen Dioxide is reported only when the one-hour Nitrogen Dioxide concentration exceeds 1130 µg/m3.
*Based on the highest indices in accordance with the USEPA guidelines for PSI reporting.
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