[Retracted] The Influence of Air Pollution on Pulmonary Disease Incidence Analyzed Based on Grey Correlation Analysis

Table 2

Impact of the pollutant levels.

S. no	AQI level	Characteristics	Impact
1	0 to 50	Good	Minimum impact
2	51 to 100	Satisfactory	Minor breathing discomfort for sensitive people
3	101 to 200	Moderate	Lung, heart disease people, children, and older adults feel discomfort while breathing
4	201 to 200	Poor	Prolong exposure to the pollutant causes the breathing discomfort
5	301 to 400	Very poor	Prolong exposure causes respiratory illness
6	>400	Severe	The respiratory problem occurs to people even healthy people