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Unit:
- 1.μg/m3,microgram per cubic meter
- 2.ppb,parts per billion
- 3.ppm,parts per milllion
- ◎:Leading Pollutant
- ND:Not Detected(indicating pollutant’s concentration less than 2 μg/m3)
PM10、PM2.5Moving Average:0.5 x average of the first 12 hours + 0.5 x average of the first 4 hours (2 entries of the first 4 hours are valid and 6 entries of the first 12 hours are valid)
O3 8 Hour Moving Average: value of the last 8-hour moving average (5 entries are valid)