Hsi-Hsien Yang , Ho-Wen Chen, Tze-Wen Chi, Pao-Yu Chuang

  • Department of Environmental Engineering and Management, Chaoyang University of Technology, Wufong, Taichung 413, Taiwan

Received: August 31, 2008
Revised: August 31, 2008
Accepted: December 29, 2016
Download Citation: ||https://doi.org/10.4209/aaqr.2008.07.0025  

  • Download: PDF

Cite this article:
Yang, H.H., Chen, H.W., Chi, T.W. and Chuang, P.Y. (2008). Analysis of Atmospheric Ozone Concentration Trends as Measured by Eighth Highest Values. Aerosol Air Qual. Res. 8: 308-318. https://doi.org/10.4209/aaqr.2008.07.0025




The ambient air quality standard for ozone in Taiwan is 0.12 ppm (hourly average). To protect human health, this standard is not to be exceeded by the observed hourly ozone concentration. To test compliance, each day’s maximum hourly ozone concentration is identified and the eighth highest value of the 365 daily hourly maxima for the entire year is calculated. To account for the uncertainty in measurement, the regulation stipulates using the three-year moving average of the eighth highest value to compare with the standard. In this study, observed ambient hourly ozone data from 1998-2002 at 9 continuous monitoring stations maintained by the government were collated and the eighth-highest concentration (MAX8) was calculated for each site by year. For the estimate of confidence interval for MAX8, a linear regression of ozone concentrations on their ranks was applied, as well as a quadratic logistic regression of odd ratios on ozone concentration. To estimate the confidence interval using the quadratic equation for inverse prediction, a Monte Carlo simulation was carried out in conjunction with the latter method. By taking into account the uncertainty expressed by the confidence interval, it was shown that MAX8 did not exhibit differences statistically for all stations in the period.

Keywords: Air quality standard; Confidence interval; Monte Carlo method; Eighth highest value; Logistic regression

Share this article with your colleagues 


Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

77st percentile
Powered by
   SCImago Journal & Country Rank

2022 Impact Factor: 4.0
5-Year Impact Factor: 3.4

Aerosol and Air Quality Research partners with Publons

CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit
CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.