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) 31 2012 02 01 00 31.10 31 2012 02 01 01 30.85 31 2012 02 01 02 30.78 31 2012 02 01 03 31.18 31 2012 02 01 04 38.74 31 2012 02 01 05 51.05 31 2012 02 01 06 50.40 31 2012 02 01 07 50.62 31 2012 02 01 08 50.60 31 2012 02 01 09 49.86 31 2012 02 01 10 46.86 31 2012 02 01 11 45.54 31 2012 02 01 12 45.83 31 2012 02 01 13 46.33 31 2012 02 01 14 45.27 31 2012 02 01 15 47.11 31 2012 02 01 16 49.31 31 2012 02 01 17 42.18 31 2012 02 01 18 40.36 31 2012 02 01 19 40.98 31 2012 02 01 20 41.35 31 2012 02 01 21 39.17 31 2012 02 01 22 38.17 31 2012 02 01 23 35.06 31 2012 02 02 00 30.58 31 2012 02 02 01 34.70 31 2012 02 02 02 34.83 31 2012 02 02 03 37.10 31 2012 02 02 04 42.91 31 2012 02 02 05 45.22 31 2012 02 02 06 49.32 31 2012 02 02 07 45.01 31 2012 02 02 08 48.61 31 2012 02 02 09 51.20 31 2012 02 02 10 50.36 31 2012 02 02 11 50.22 31 2012 02 02 12 51.04 31 2012 02 02 13 51.85 31 2012 02 02 14 51.84 31 2012 02 02 15 47.52 31 2012 02 02 16 46.91 31 2012 02 02 17 47.24 31 2012 02 02 18 47.52 31 2012 02 02 19 46.87 31 2012 02 02 20 45.21 31 2012 02 02 21 42.80 31 2012 02 02 23 36.97 31 2012 02 03 00 38.68 31 2012 02 03 01 37.25 31 2012 02 03 02 35.18 31 2012 02 03 03 41.82 31 2012 02 03 04 41.74 31 2012 02 03 05 38.86 31 2012 02 03 06 41.31 31 2012 02 03 07 47.24 31 2012 02 03 08 49.31 31 2012 02 03 09 52.68 31 2012 02 03 10 52.99 31 2012 02 03 11 50.72 31 2012 02 03 12 48.32 31 2012 02 03 13 47.94 31 2012 02 03 14 48.16 31 2012 02 03 15 48.78 31 2012 02 03 16 48.98 31 2012 02 03 17 49.09 31 2012 02 03 18 48.79 31 2012 02 03 19 50.61 31 2012 02 03 20 50.28 31 2012 02 03 21 40.27 31 2012 02 03 22 36.63 31 2012 02 03 23 43.80 31 2012 02 04 00 48.65 31 2012 02 04 01 52.71 31 2012 02 04 02 53.38 31 2012 02 04 03 48.40 31 2012 02 04 04 49.24 31 2012 02 04 05 50.51 31 2012 02 04 06 50.49 31 2012 02 04 07 50.43 31 2012 02 04 08 51.40 31 2012 02 04 09 54.25 31 2012 02 04 10 55.31 31 2012 02 04 11 44.80 31 2012 02 04 12 36.69 31 2012 02 04 13 33.77 31 2012 02 04 14 37.58 31 2012 02 04 15 42.00 31 2012 02 04 16 41.29 31 2012 02 04 17 42.86 31 2012 02 04 18 44.44 31 2012 02 04 19 45.96 31 2012 02 04 20 44.51 31 2012 02 04 21 42.53 31 2012 02 04 22 43.49 31 2012 02 04 23 38.56 31 2012 02 05 00 40.13 31 2012 02 05 01 38.17 31 2012 02 05 02 38.98 31 2012 02 05 03 42.33 31 2012 02 05 04 42.80 31 2012 02 05 05 42.84 31 2012 02 05 06 43.01 31 2012 02 05 07 41.77 31 2012 02 05 08 41.73 31 2012 02 05 09 42.16 31 2012 02 05 10 42.90 31 2012 02 05 11 43.90 31 2012 02 05 12 42.94 31 2012 02 05 13 42.99 31 2012 02 05 14 41.01 31 2012 02 05 15 39.38 31 2012 02 05 16 39.53 31 2012 02 05 17 42.41 31 2012 02 05 18 42.32 31 2012 02 05 19 42.14 31 2012 02 05 20 42.43 31 2012 02 05 21 42.53 31 2012 02 05 22 42.63 31 2012 02 05 23 43.03 31 2012 02 06 00 42.42 31 2012 02 06 01 43.71 31 2012 02 06 02 43.20 31 2012 02 06 03 45.11 31 2012 02 06 04 45.66 31 2012 02 06 05 45.38 31 2012 02 06 06 44.61 31 2012 02 06 07 44.54 31 2012 02 06 08 45.64 31 2012 02 06 09 44.06 31 2012 02 06 10 43.56 31 2012 02 06 11 44.10 31 2012 02 06 12 44.12 31 2012 02 06 13 42.69 31 2012 02 06 14 42.49 31 2012 02 06 15 41.59 31 2012 02 06 16 41.10 31 2012 02 06 17 41.15 31 2012 02 06 18 42.06 31 2012 02 06 19 44.36 31 2012 02 06 20 45.53 31 2012 02 06 21 43.90 31 2012 02 08 12 40.20 31 2012 02 08 13 40.75 31 2012 02 08 14 38.55 31 2012 02 08 15 48.90 31 2012 02 08 16 51.12 31 2012 02 08 17 49.12 31 2012 02 08 18 47.48 31 2012 02 08 19 48.16 31 2012 02 08 20 49.13 31 2012 02 08 21 47.45 31 2012 02 08 22 47.41 31 2012 02 08 23 48.27 31 2012 02 09 00 48.27 31 2012 02 09 01 47.62 31 2012 02 09 02 48.43 31 2012 02 09 03 49.30 31 2012 02 09 04 50.64 31 2012 02 09 05 50.23 31 2012 02 09 06 49.17 31 2012 02 09 07 50.32 31 2012 02 09 08 51.78 31 2012 02 09 09 52.34 31 2012 02 09 10 49.23 31 2012 02 09 11 51.11 31 2012 02 09 12 49.12 31 2012 02 09 13 47.79 31 2012 02 09 14 47.86 31 2012 02 09 15 47.54 31 2012 02 09 16 46.82 31 2012 02 09 17 46.75 31 2012 02 09 18 45.82 31 2012 02 09 19 46.05 31 2012 02 09 20 46.59 31 2012 02 09 21 46.02 31 2012 02 09 22 44.28 31 2012 02 09 23 42.39 31 2012 02 10 00 40.74 31 2012 02 10 01 40.08 31 2012 02 10 02 40.66 31 2012 02 10 03 41.22 31 2012 02 10 04 39.31 31 2012 02 10 05 42.18 31 2012 02 10 06 41.88 31 2012 02 10 07 43.18 31 2012 02 10 08 44.27 31 2012 02 10 09 46.67 31 2012 02 10 10 45.77 31 2012 02 10 11 45.36 31 2012 02 10 12 47.36 31 2012 02 10 13 49.34 31 2012 02 10 14 51.40 31 2012 02 10 15 50.14 31 2012 02 10 16 51.98 31 2012 02 10 17 51.43 31 2012 02 10 18 51.42 31 2012 02 10 19 52.14 31 2012 02 10 20 50.05 31 2012 02 10 21 49.43 31 2012 02 10 22 49.68 31 2012 02 10 23 47.01 31 2012 02 11 00 43.01 31 2012 02 11 01 42.58 31 2012 02 11 02 46.46 31 2012 02 11 03 50.75 31 2012 02 11 04 52.10 31 2012 02 11 05 52.62 31 2012 02 11 06 51.33 31 2012 02 11 07 47.68 31 2012 02 11 08 47.23 31 2012 02 11 09 46.45 31 2012 02 11 10 46.47 31 2012 02 11 11 49.32 31 2012 02 11 12 48.76 31 2012 02 11 13 47.11 31 2012 02 11 14 44.27 31 2012 02 11 15 41.72 31 2012 02 11 16 43.05 31 2012 02 11 17 37.69 31 2012 02 11 18 39.00 31 2012 02 11 19 38.58 31 2012 02 11 20 39.18 31 2012 02 11 21 39.07 31 2012 02 11 22 37.03 31 2012 02 11 23 35.11 31 2012 02 12 00 34.08 31 2012 02 12 01 34.00 31 2012 02 12 02 38.10 31 2012 02 12 03 42.82 31 2012 02 12 04 43.95 31 2012 02 12 05 42.20 31 2012 02 12 06 44.62 31 2012 02 12 07 46.29 31 2012 02 12 08 45.88 31 2012 02 12 09 45.54 31 2012 02 12 10 46.11 31 2012 02 12 11 45.90 31 2012 02 12 12 46.60 31 2012 02 12 13 46.32 31 2012 02 12 14 45.77 31 2012 02 12 15 45.65 31 2012 02 12 16 45.59 31 2012 02 12 17 45.52 31 2012 02 12 18 45.38 31 2012 02 12 19 45.92 31 2012 02 12 20 45.89 31 2012 02 12 21 45.53 31 2012 02 12 22 45.49 31 2012 02 12 23 45.39 31 2012 02 13 00 45.07 31 2012 02 13 01 44.96 31 2012 02 13 02 44.49 31 2012 02 13 03 43.89 31 2012 02 13 04 44.67 31 2012 02 13 05 42.48 31 2012 02 13 06 37.69 31 2012 02 13 07 48.08 31 2012 02 13 08 52.95 31 2012 02 13 09 51.51 31 2012 02 13 10 50.69 31 2012 02 13 11 52.09 31 2012 02 13 12 52.40 31 2012 02 13 13 48.01 31 2012 02 13 14 45.51 31 2012 02 13 15 47.45 31 2012 02 13 16 46.45 31 2012 02 13 17 45.50 31 2012 02 13 18 44.82 31 2012 02 13 19 42.87 31 2012 02 13 20 41.99 31 2012 02 13 21 41.39 31 2012 02 14 00 41.25 31 2012 02 14 01 40.79 31 2012 02 14 02 40.77 31 2012 02 14 03 41.64 31 2012 02 14 04 42.50 31 2012 02 14 05 42.95 31 2012 02 14 06 43.48 31 2012 02 14 07 43.11 31 2012 02 14 08 42.21 31 2012 02 14 09 39.79 31 2012 02 14 10 39.99 31 2012 02 14 11 41.70 31 2012 02 14 12 44.08 31 2012 02 14 13 45.13 31 2012 02 14 14 48.78 31 2012 02 14 15 48.89 31 2012 02 14 16 48.44 31 2012 02 14 17 48.68 31 2012 02 14 18 48.94 31 2012 02 14 19 49.66 31 2012 02 14 20 50.18 31 2012 02 14 21 50.26 31 2012 02 14 22 49.15 31 2012 02 14 23 48.18 31 2012 02 15 00 46.88 31 2012 02 15 01 47.69 31 2012 02 15 02 48.87 31 2012 02 15 03 48.66 31 2012 02 15 04 52.57 31 2012 02 15 05 53.13 31 2012 02 15 06 52.03 31 2012 02 15 07 53.27 31 2012 02 15 08 53.01 31 2012 02 15 09 53.32 31 2012 02 15 10 53.22 31 2012 02 15 11 53.88 31 2012 02 15 12 54.43 31 2012 02 15 13 54.14 31 2012 02 15 14 54.28 31 2012 02 15 15 54.29 31 2012 02 15 16 54.47 31 2012 02 15 17 53.35 31 2012 02 15 18 51.82 31 2012 02 15 19 52.68 31 2012 02 15 20 50.34 31 2012 02 15 21 45.81 31 2012 02 15 22 47.45 31 2012 02 15 23 51.92 31 2012 02 16 00 49.19 31 2012 02 16 01 48.65 31 2012 02 16 02 48.97 31 2012 02 16 03 49.97 31 2012 02 16 04 49.18 31 2012 02 16 05 49.31 31 2012 02 16 06 50.04 31 2012 02 16 07 50.43 31 2012 02 16 08 48.46 31 2012 02 16 09 43.61 31 2012 02 16 10 45.29 31 2012 02 16 11 41.65 31 2012 02 16 12 41.31 31 2012 02 16 13 40.36 31 2012 02 16 14 41.04 31 2012 02 16 15 39.78 31 2012 02 16 16 40.17 31 2012 02 16 17 41.07 31 2012 02 16 18 42.76 31 2012 02 16 19 42.04 31 2012 02 16 20 42.48 31 2012 02 16 21 41.84 31 2012 02 19 13 37.43 31 2012 02 19 14 37.62 31 2012 02 19 15 42.11 31 2012 02 19 16 46.24 31 2012 02 19 17 42.78 31 2012 02 19 18 39.05 31 2012 02 19 19 37.31 31 2012 02 19 20 37.70 31 2012 02 19 21 37.58 31 2012 02 19 22 38.55 31 2012 02 19 23 43.43 31 2012 02 20 00 44.23 31 2012 02 20 01 50.40 31 2012 02 20 02 48.42 31 2012 02 20 03 44.29 31 2012 02 20 04 42.47 31 2012 02 20 05 43.60 31 2012 02 20 06 41.29 31 2012 02 20 07 39.78 31 2012 02 20 08 44.39 31 2012 02 20 09 47.26 31 2012 02 20 10 50.63 31 2012 02 20 11 51.06 31 2012 02 20 12 50.89 31 2012 02 20 13 51.13 31 2012 02 20 14 47.84 31 2012 02 20 15 48.32 31 2012 02 20 16 51.38 31 2012 02 20 17 52.03 31 2012 02 20 18 51.26 31 2012 02 20 19 50.42 31 2012 02 20 20 49.39 31 2012 02 20 21 48.06 31 2012 02 20 22 41.38 31 2012 02 20 23 42.10 31 2012 02 21 00 40.84 31 2012 02 21 01 44.50 31 2012 02 21 02 47.45 31 2012 02 21 03 43.77 31 2012 02 21 04 46.24 31 2012 02 21 05 45.05 31 2012 02 21 06 44.79 31 2012 02 21 07 50.27 31 2012 02 21 08 46.26 31 2012 02 21 09 48.93 31 2012 02 21 10 52.00 31 2012 02 21 11 51.74 31 2012 02 21 12 48.96 31 2012 02 21 13 48.68 31 2012 02 21 14 51.79 31 2012 02 21 15 49.84 31 2012 02 21 16 45.36 31 2012 02 21 17 45.69 31 2012 02 21 18 45.50 31 2012 02 21 19 39.91 31 2012 02 21 20 38.59 31 2012 02 21 21 37.96 31 2012 02 21 22 37.61 31 2012 02 21 23 37.18 31 2012 02 22 00 37.43 31 2012 02 22 01 38.11 31 2012 02 22 02 38.81 31 2012 02 22 03 39.13 31 2012 02 22 04 39.25 31 2012 02 22 05 38.57 31 2012 02 22 06 39.54 31 2012 02 22 07 39.30 31 2012 02 22 08 39.02 31 2012 02 22 09 41.09 31 2012 02 22 10 40.79 31 2012 02 22 11 40.40 31 2012 02 22 12 41.74 31 2012 02 22 13 42.43 31 2012 02 22 14 47.77 31 2012 02 22 15 43.56 31 2012 02 22 16 39.11 31 2012 02 22 17 40.25 31 2012 02 22 18 39.29 31 2012 02 22 19 39.16 31 2012 02 22 20 41.12 31 2012 02 22 21 40.07 31 2012 02 22 22 41.27 31 2012 02 22 23 39.29 31 2012 02 23 00 38.92 31 2012 02 23 01 39.30 31 2012 02 23 02 40.69 31 2012 02 23 03 37.97 31 2012 02 23 04 40.81 31 2012 02 23 05 40.09 31 2012 02 23 06 41.89 31 2012 02 23 07 41.90 31 2012 02 23 08 45.59 31 2012 02 23 09 46.84 31 2012 02 23 10 48.96 31 2012 02 23 11 45.40 31 2012 02 23 12 41.03 31 2012 02 23 13 38.12 31 2012 02 23 14 37.12 31 2012 02 23 15 40.81 31 2012 02 23 16 40.10 31 2012 02 23 17 40.91 31 2012 02 23 18 39.93 31 2012 02 23 19 37.48 31 2012 02 23 20 36.99 31 2012 02 23 21 34.78 31 2012 02 23 22 34.33 31 2012 02 23 23 36.15 31 2012 02 24 00 35.91 31 2012 02 24 01 33.83 31 2012 02 24 02 36.67 31 2012 02 24 03 38.48 31 2012 02 24 04 40.61 31 2012 02 24 05 45.39 31 2012 02 24 06 49.98 31 2012 02 24 07 52.40 31 2012 02 24 08 52.75 31 2012 02 24 09 52.84 31 2012 02 24 10 51.57 31 2012 02 24 11 47.55 31 2012 02 24 12 37.13 31 2012 02 24 13 35.24 31 2012 02 24 14 33.64 31 2012 02 24 15 34.31 31 2012 02 24 16 34.30 31 2012 02 24 17 35.78 31 2012 02 24 18 35.87 31 2012 02 24 19 39.14 31 2012 02 24 20 35.86 31 2012 02 24 21 31.99 31 2012 02 24 22 31.11 31 2012 02 24 23 31.75 31 2012 02 25 00 31.99 31 2012 02 25 01 34.27 31 2012 02 25 02 30.61 31 2012 02 25 03 30.47 31 2012 02 25 04 30.80 31 2012 02 25 05 31.04 31 2012 02 25 06 35.10 31 2012 02 25 07 34.41 31 2012 02 25 08 33.30 31 2012 02 25 09 33.30 31 2012 02 25 10 32.43 31 2012 02 25 11 33.81 31 2012 02 25 12 37.03 31 2012 02 25 13 35.97 31 2012 02 25 14 35.43 31 2012 02 25 15 35.79 31 2012 02 25 16 32.26 31 2012 02 25 17 32.21 31 2012 02 25 18 30.09 31 2012 02 25 19 33.73 31 2012 02 25 20 30.95 31 2012 02 25 21 30.08 31 2012 02 25 22 32.25 31 2012 02 25 23 28.54 31 2012 02 26 00 28.74 31 2012 02 26 01 28.58 31 2012 02 26 02 29.04 31 2012 02 26 03 33.07 31 2012 02 26 04 34.97 31 2012 02 26 05 34.82 31 2012 02 26 06 35.76 31 2012 02 26 07 39.04 31 2012 02 26 08 37.87 31 2012 02 26 09 37.34 31 2012 02 26 10 37.98 31 2012 02 26 11 38.03 31 2012 02 26 12 37.09 31 2012 02 26 13 37.00 31 2012 02 26 14 36.25 31 2012 02 26 15 36.01 31 2012 02 26 16 38.34 31 2012 02 26 17 40.89 31 2012 02 26 18 39.45 31 2012 02 26 19 37.11 31 2012 02 26 20 35.91 31 2012 02 26 21 32.36 31 2012 02 26 22 29.48 31 2012 02 26 23 29.75 31 2012 02 27 00 30.04 31 2012 02 27 01 31.38 31 2012 02 27 02 31.72 31 2012 02 27 03 34.45 31 2012 02 27 04 33.44 31 2012 02 27 05 33.16 31 2012 02 27 06 31.18 31 2012 02 27 07 33.41 31 2012 02 27 08 33.59 31 2012 02 27 09 38.10 31 2012 02 27 10 41.65 31 2012 02 27 11 40.26 31 2012 02 27 12 41.22 31 2012 02 27 13 38.45 31 2012 02 27 14 35.63 31 2012 02 27 15 34.04 31 2012 02 27 16 33.95 31 2012 02 27 17 35.22 31 2012 02 27 18 35.45 31 2012 02 27 19 36.94 31 2012 02 27 20 35.46 31 2012 02 27 22 33.02 31 2012 02 27 23 31.39 31 2012 02 28 00 31.84 31 2012 02 28 01 33.51 31 2012 02 28 02 35.12 31 2012 02 28 03 33.96 31 2012 02 28 04 37.34 31 2012 02 28 05 41.54 31 2012 02 28 06 41.34 31 2012 02 28 07 41.13 31 2012 02 28 08 40.47 31 2012 02 28 09 40.12 31 2012 02 28 10 40.70 31 2012 02 28 11 38.69 31 2012 02 28 12 35.68 31 2012 02 28 13 34.17 31 2012 02 28 14 35.58 31 2012 02 28 15 36.72 31 2012 02 28 16 38.93 31 2012 02 28 17 38.25 31 2012 02 28 18 39.54 31 2012 02 28 19 40.21 31 2012 02 28 20 36.99 31 2012 02 28 21 35.47 31 2012 02 28 22 36.20 31 2012 02 28 23 36.36 31 2012 02 29 00 35.90 31 2012 02 29 01 36.37 31 2012 02 29 02 36.30 31 2012 02 29 03 37.58 31 2012 02 29 04 35.38 31 2012 02 29 05 34.07 31 2012 02 29 06 34.60 31 2012 02 29 07 35.12 31 2012 02 29 08 36.23 31 2012 02 29 09 37.54 31 2012 02 29 10 35.49 31 2012 02 29 11 37.05 31 2012 02 29 12 38.38 31 2012 02 29 13 37.84 31 2012 02 29 14 36.41 31 2012 02 29 15 41.91 31 2012 02 29 16 42.52 31 2012 02 29 17 41.76 31 2012 02 29 18 39.13 31 2012 02 29 19 36.69 31 2012 02 29 20 33.28 31 2012 02 29 21 31.48 31 2012 02 29 22 31.49 31 2012 02 29 23 31.85