a significant trendP = 0.589
However, this research did not find a significant trend in evaluating quadratic polynomial trends for PM 2.5 ( P = 0.589) and PM 10 ( P = 0.596).
However, this research did not find a significant trend in evaluating quadratic polynomial trends for PM 2.5 ( P = 0.589) and PM 10 ( P = 0.596).