Business Standard
Air-levels in rose 50% during the first week (January 1 to 7, 2016) of the state government’s measure over the previous week (December 25 to December 31, 2015), according to an analysis of PM (particulate matter) 2.5 data, generated by IndiaSpend’s #Breathe air-quality monitoring device” Business Standard

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Odd-even rule: After 7 days, Delhi air quality worsens 50%