New Delhi, Oct. 23 -- A war of words erupted between the Delhi government and the opposition over air pollution in the capital for a second day on Wednesday, even as the air quality stayed in the 'very poor' quality for a third day. While the government said that the pollution levels were in control, the opposition alleged that the government "manipulated and concealed" Delhi's air quality data on Diwali night by shutting down pollution monitoring stations across the capital. Chief minister Rekha Gupta said that the pollution levels had not risen unexpectedly and were less than in previous years. "We have all seen the data. If we compare the data of the next day of Diwali with the previous years, the AQI has decreased. Although permission w...