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'Kolkata's pollution last winter just behind Delhi's'
'Kolkata's pollution last winter just behind Delhi's'
Kolkata had the second-worst air quality this winter among all mega cities in the country - just behind Delhi - in terms of the number of "very poor" air quality index (AQI) days, according to data released by the Centre for Science and Environment (CSE).
Kolkata had the second-worst air quality this winter among all mega cities in the country - just behind Delhi - in terms of the number of "very poor" air quality index (AQI) days, according to data released by the Centre for Science and Environment (CSE).
Kolkata had the second-worst air quality this winter among all mega cities in the country - just behind Delhi - in terms of the number of "very poor" air quality index (AQI) days, according to data released by the Centre for Science and Environment (CSE). 
