なるほど… RT @BeijingAir 02-27-2013; PM2.5 24hr avg; 245.7; 295; Very Unhealthy 02-26-2013; PM2.5 24hr avg; 216.4; 266; Very Unhealthy
02-27-2013 00:00 to 02-27-2013 23:59; PM2.5 24hr avg; 245.7; 295; Very Unhealthy
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この数字は(AQI)といい、PM2.5とオゾンの各濃度を環境基準値(24hr)に対する比(%)として表したものとのこと。RT
@U_runner@BeijingAir 02-27-2013; PM2.5 24hr avg; 245.7; 295; Very Unhealthy
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