Preferred Source Google Discover New Delhi, Nov 10 (PTI) Most of the missing air quality data from Delhi Pollution Control Committee (DPCC) monitoring stations on Diwali night was updated,. Several other monitoring stations also recorded exceptionally high particulate matter concentrations after their missing readings were updated. DPCC's Diwali-night data shows Delhi's PM2.5 levels peaked at 3,744 mcg per cubic metre at Mundka, over 60 times the national 24-hour standard.