India, Nov. 10 -- The Delhi Pollution Control Committee released on Monday evening the hourly Diwali-night readings that had been absent from the Central Pollution Control Board's records, showing fine particulate matter at one station climbing to 3,744 micrograms per cubic metre. That is more than 60 times the 60-microgram limit that applies over 24 hours.

Mundka logged the highest concentration, at 2 am on Monday. Jawaharlal Nehru University followed with 3,023 at 4 am and the NSUT West Campus station with 3,008 at 5 am. Mandir Marg, Nehru Nagar and Wazirpur also crossed 2,000, at 2,908, 2,808 and 2,721 respectively, and 11 of the committee's stations went past that mark.

The release followed a day of questions about why readings vani...