Air Quality Index by US County
        Description: Various recordings of Air Quality Index (AQI) by US County, recorded in early 2020
Source
Columns:
- State (string): what state the AQI was recorded in
 
- County (string): what county within a state AQI was recorded in
 
- Year (numerical): what year the AQI recordings were measured in
 
- Days with AQI (numerical): how many days in the given year AQI was recorded in that county
 
- Good Days (numerical): amount of good AQI days in the recorded period
 
- Moderate Days (numerical): amount of moderate AQI days in the recorded period
 
- Unhealthy for Sensitive Groups Days (numerical): amount of unhealthy for sensitive groups AQI days in the recorded period
 
- Unhealthy Days (numerical): amount of unhealthy AQI days in the recorded period
 
- Very Unhealthy Days (numerical): amount of very unhealthy AQI days in the recorded period
 
- Hazardous Days (numerical): amount of hazardous AQI days in the recorded period
 
- Max AQI (numerical): the maximum value of AQI in the recorded period
 
        
     
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