These data are made available to the scientific community and public with the understanding that authors of publications and presentations will contact the PI to obtain up-to-date information on the latest version of the data during the early stages of their analysis. Manuscripts that employ these data should be reviewed by the PI before submission to ensure the quality and limitations of the data are represented. Data Disclaimer: Data has undergone extensive quality checks and is available from NOAA-GMD and WDCGG. However, there still exists the potential for these data to be modified at the discretion of NOAA/ESRL Global Monitoring Division. If you have questions regarding the data in this file, please contact: Audra McClure-Begley: Audra.mcclure@noaa.gov (303-497-6823) Please use the following citation for data use: McClure-Begley, A., Petropavlovskikh, I., Oltmans, S., (2014) NOAA Global Monitoring Surface Ozone Network. Station name, Time start-Time end. National Oceanic and Atmospheric Administration, Earth Systems Research Laboratory Global Monitoring Division. Boulder, CO. DATE ACCESSED http://dx.doi.org/10.7289/V57P8WBF STN YEAR MON DAY HR O3(PPB) WKT 2009 04 28 13 17.12 WKT 2009 04 28 14 17.36 WKT 2009 04 28 15 17.09 WKT 2009 04 28 16 22.24 WKT 2009 04 28 17 21.40 WKT 2009 04 28 18 21.86 WKT 2009 04 28 19 22.94 WKT 2009 04 28 20 22.78 WKT 2009 04 28 21 22.67 WKT 2009 04 28 22 23.16 WKT 2009 04 28 23 26.71 WKT 2009 04 29 00 25.65 WKT 2009 04 29 01 23.75 WKT 2009 04 29 02 21.98 WKT 2009 04 29 03 19.49 WKT 2009 04 29 04 18.50 WKT 2009 04 29 05 17.32 WKT 2009 04 29 06 16.45 WKT 2009 04 29 07 16.44 WKT 2009 04 29 08 17.72 WKT 2009 04 29 09 17.72 WKT 2009 04 29 10 16.75 WKT 2009 04 29 11 16.08 WKT 2009 04 29 12 15.12 WKT 2009 04 29 13 15.62 WKT 2009 04 29 14 17.15 WKT 2009 04 29 15 17.64 WKT 2009 04 29 16 18.76 WKT 2009 04 29 17 23.70 WKT 2009 04 29 18 25.78 WKT 2009 04 29 19 25.89 WKT 2009 04 29 20 26.31 WKT 2009 04 29 21 25.15 WKT 2009 04 29 22 23.83 WKT 2009 04 29 23 24.42 WKT 2009 04 30 00 23.51 WKT 2009 04 30 01 22.50 WKT 2009 04 30 02 23.30 WKT 2009 04 30 03 23.00 WKT 2009 04 30 04 21.78 WKT 2009 04 30 05 21.53 WKT 2009 04 30 06 21.29 WKT 2009 04 30 07 21.02 WKT 2009 04 30 08 21.01 WKT 2009 04 30 09 20.76 WKT 2009 04 30 10 19.76 WKT 2009 04 30 11 18.85 WKT 2009 04 30 12 14.80 WKT 2009 04 30 13 15.38 WKT 2009 04 30 14 17.22 WKT 2009 04 30 15 20.84 WKT 2009 04 30 16 24.75 WKT 2009 04 30 17 28.80 WKT 2009 04 30 18 31.71 WKT 2009 04 30 19 34.85 WKT 2009 04 30 20 35.71 WKT 2009 04 30 21 38.11 WKT 2009 04 30 22 36.15 WKT 2009 04 30 23 34.29