In a given year, Houston has good air quality 48% of the days, moderate air quality 41% of the days,

In a given year, Houston has good air quality 48% of the days, moderate air quality 41% of the days, and unhealthy air quality 4% of the days. How many days per year do residents have unhealthy air quality?

4% of 365 days in a year = 14.6 days. If we are talking full days, we have 14.