e data are made available to the scientific community and public with the un derstanding that authors of publications and presentations will contact the PI t o obtain up-to-date information on the latest version of the data during the early stages of their analysis. Manuscripts that employ these data sh ould be reviewed by the PI before submission to enure the quality and limitation of the data are represented. Data Acknolowedegment: The Lauder surface ozone monitoring is a collaboration be tween NOAA-GML and NIWA (New Zealand's National Institude of Water & Atmospheric Research). Data collection is made possible thanks to efforts of Dan Smale (dan.smale@niwa.co.nz) and Dr. Richard Querel (Richard.Querel@niwa.co. nz) Data Disclaimer: Data has undergone extensive quality checks and is available fr om NOAA-GML and WDCGG. However, there still exists the potential for these data STN YEAR MON DAY HR O3(PPB) LAU 2019 12 01 00 28.84 LAU 2019 12 01 01 28.48 LAU 2019 12 01 02 29.38 LAU 2019 12 01 03 32.15 LAU 2019 12 01 04 35.10 LAU 2019 12 01 05 32.61 LAU 2019 12 01 06 31.92 LAU 2019 12 01 07 28.51 LAU 2019 12 01 08 28.33 LAU 2019 12 01 09 27.42 LAU 2019 12 01 10 26.90 LAU 2019 12 01 11 25.85 LAU 2019 12 01 12 25.23 LAU 2019 12 01 13 24.35 LAU 2019 12 01 14 25.40 LAU 2019 12 01 15 26.48 LAU 2019 12 01 16 26.54 LAU 2019 12 01 17 24.24 LAU 2019 12 01 18 22.50 LAU 2019 12 01 19 9999.99 LAU 2019 12 01 20 9999.99 LAU 2019 12 01 21 26.95 LAU 2019 12 01 22 28.41 LAU 2019 12 01 23 29.06 LAU 2019 12 02 00 30.79 LAU 2019 12 02 01 29.44 LAU 2019 12 02 02 28.47 LAU 2019 12 02 03 27.09 LAU 2019 12 02 04 27.89 LAU 2019 12 02 05 27.93 LAU 2019 12 02 06 28.91 LAU 2019 12 02 07 28.09 LAU 2019 12 02 08 27.78 LAU 2019 12 02 09 26.97 LAU 2019 12 02 10 27.21 LAU 2019 12 02 11 28.09 LAU 2019 12 02 12 27.16 LAU 2019 12 02 13 26.06 LAU 2019 12 02 14 25.06 LAU 2019 12 02 15 24.16 LAU 2019 12 02 16 25.93 LAU 2019 12 02 17 27.83 LAU 2019 12 02 18 32.95 LAU 2019 12 02 19 36.00 LAU 2019 12 02 20 35.03 LAU 2019 12 02 21 36.19 LAU 2019 12 02 22 36.32 LAU 2019 12 02 23 33.52 LAU 2019 12 03 00 31.78 LAU 2019 12 03 01 32.02 LAU 2019 12 03 02 32.55 LAU 2019 12 03 03 31.86 LAU 2019 12 03 04 31.12 LAU 2019 12 03 05 28.27 LAU 2019 12 03 06 25.24 LAU 2019 12 03 07 23.53 LAU 2019 12 03 08 22.11 LAU 2019 12 03 09 20.49 LAU 2019 12 03 10 21.53 LAU 2019 12 03 11 22.65 LAU 2019 12 03 12 22.04 LAU 2019 12 03 13 20.10 LAU 2019 12 03 14 19.55 LAU 2019 12 03 15 18.15 LAU 2019 12 03 16 19.54 LAU 2019 12 03 17 19.06 LAU 2019 12 03 18 18.01 LAU 2019 12 03 19 16.52 LAU 2019 12 03 20 15.78 LAU 2019 12 03 21 17.52 LAU 2019 12 03 22 17.96 LAU 2019 12 03 23 18.29 LAU 2019 12 04 00 17.93 LAU 2019 12 04 01 22.18 LAU 2019 12 04 02 23.97 LAU 2019 12 04 03 23.26 LAU 2019 12 04 04 22.71 LAU 2019 12 04 05 22.95 LAU 2019 12 04 06 23.37 LAU 2019 12 04 07 22.12 LAU 2019 12 04 08 21.81 LAU 2019 12 04 09 21.19 LAU 2019 12 04 10 21.08 LAU 2019 12 04 11 20.72 LAU 2019 12 04 12 20.23 LAU 2019 12 04 13 18.39 LAU 2019 12 04 14 18.17 LAU 2019 12 04 15 20.19 LAU 2019 12 04 16 20.97 LAU 2019 12 04 17 19.07 LAU 2019 12 04 18 20.49 LAU 2019 12 04 19 20.54 LAU 2019 12 04 20 20.68 LAU 2019 12 04 21 21.06 LAU 2019 12 04 22 20.80 LAU 2019 12 04 23 21.20 LAU 2019 12 05 00 22.27 LAU 2019 12 05 01 22.74 LAU 2019 12 05 02 23.56 LAU 2019 12 05 03 23.88 LAU 2019 12 05 04 23.46 LAU 2019 12 05 05 23.29 LAU 2019 12 05 06 23.61 LAU 2019 12 05 07 23.63 LAU 2019 12 05 08 23.71 LAU 2019 12 05 09 22.93 LAU 2019 12 05 10 22.59 LAU 2019 12 05 11 22.20 LAU 2019 12 05 12 21.18 LAU 2019 12 05 13 19.84 LAU 2019 12 05 14 21.71 LAU 2019 12 05 15 21.31 LAU 2019 12 05 16 20.92 LAU 2019 12 05 17 21.77 LAU 2019 12 05 18 24.08 LAU 2019 12 05 19 25.48 LAU 2019 12 05 20 27.25 LAU 2019 12 05 21 30.82 LAU 2019 12 05 22 31.48 LAU 2019 12 05 23 32.49 LAU 2019 12 06 00 34.50 LAU 2019 12 06 01 34.83 LAU 2019 12 06 02 34.20 LAU 2019 12 06 03 30.42 LAU 2019 12 06 04 27.02 LAU 2019 12 06 05 26.63 LAU 2019 12 06 06 26.89 LAU 2019 12 06 07 24.08 LAU 2019 12 06 08 31.26 LAU 2019 12 06 09 34.29 LAU 2019 12 06 10 33.88 LAU 2019 12 06 11 31.95 LAU 2019 12 06 12 29.95 LAU 2019 12 06 13 27.02 LAU 2019 12 06 14 24.93 LAU 2019 12 06 15 25.43 LAU 2019 12 06 16 24.57 LAU 2019 12 06 17 22.14 LAU 2019 12 06 18 25.78 LAU 2019 12 06 19 28.24 LAU 2019 12 06 20 27.53 LAU 2019 12 06 21 29.49 LAU 2019 12 06 22 26.65 LAU 2019 12 06 23 25.84 LAU 2019 12 07 00 24.99 LAU 2019 12 07 01 24.19 LAU 2019 12 07 02 23.01 LAU 2019 12 07 03 22.63 LAU 2019 12 07 04 22.08 LAU 2019 12 07 05 22.21 LAU 2019 12 07 06 22.45 LAU 2019 12 07 07 22.08 LAU 2019 12 07 08 22.30 LAU 2019 12 07 09 21.90 LAU 2019 12 07 10 21.56 LAU 2019 12 07 11 21.91 LAU 2019 12 07 12 20.39 LAU 2019 12 07 13 18.47 LAU 2019 12 07 14 18.63 LAU 2019 12 07 15 21.63 LAU 2019 12 07 16 22.87 LAU 2019 12 07 17 21.91 LAU 2019 12 07 18 19.73 LAU 2019 12 07 19 21.33 LAU 2019 12 07 20 22.16 LAU 2019 12 07 21 21.82 LAU 2019 12 07 22 20.87 LAU 2019 12 07 23 21.20 LAU 2019 12 08 00 21.14 LAU 2019 12 08 01 21.01 LAU 2019 12 08 02 20.68 LAU 2019 12 08 03 20.02 LAU 2019 12 08 04 19.64 LAU 2019 12 08 05 18.85 LAU 2019 12 08 06 18.48 LAU 2019 12 08 07 17.48 LAU 2019 12 08 08 16.90 LAU 2019 12 08 09 16.03 LAU 2019 12 08 10 16.37 LAU 2019 12 08 11 15.91 LAU 2019 12 08 12 15.99 LAU 2019 12 08 13 15.98 LAU 2019 12 08 14 15.63 LAU 2019 12 08 15 15.06 LAU 2019 12 08 16 15.32 LAU 2019 12 08 17 9999.99 LAU 2019 12 08 18 9999.99 LAU 2019 12 08 19 16.49 LAU 2019 12 08 20 17.30 LAU 2019 12 08 21 17.84 LAU 2019 12 08 22 18.90 LAU 2019 12 08 23 18.93 LAU 2019 12 09 00 18.89 LAU 2019 12 09 01 19.25 LAU 2019 12 09 02 19.83 LAU 2019 12 09 03 20.57 LAU 2019 12 09 04 19.07 LAU 2019 12 09 05 17.90 LAU 2019 12 09 06 17.08 LAU 2019 12 09 07 16.12 LAU 2019 12 09 08 14.78 LAU 2019 12 09 09 14.25 LAU 2019 12 09 10 13.19 LAU 2019 12 09 11 11.97 LAU 2019 12 09 12 11.49 LAU 2019 12 09 13 8.86 LAU 2019 12 09 14 7.21 LAU 2019 12 09 15 6.16 LAU 2019 12 09 16 4.41 LAU 2019 12 09 17 3.94 LAU 2019 12 09 18 4.96 LAU 2019 12 09 19 8.37 LAU 2019 12 09 20 9.98 LAU 2019 12 09 21 13.96 LAU 2019 12 09 22 14.94 LAU 2019 12 09 23 15.20 LAU 2019 12 10 00 16.15 LAU 2019 12 10 01 18.95 LAU 2019 12 10 02 19.67 LAU 2019 12 10 03 20.13 LAU 2019 12 10 04 18.48 LAU 2019 12 10 05 16.96 LAU 2019 12 10 06 16.34 LAU 2019 12 10 07 16.73 LAU 2019 12 10 08 18.36 LAU 2019 12 10 09 20.31 LAU 2019 12 10 10 20.84 LAU 2019 12 10 11 21.11 LAU 2019 12 10 12 21.30 LAU 2019 12 10 13 20.69 LAU 2019 12 10 14 20.74 LAU 2019 12 10 15 14.76 LAU 2019 12 10 16 18.83 LAU 2019 12 10 17 18.94 LAU 2019 12 10 18 15.91 LAU 2019 12 10 19 14.67 LAU 2019 12 10 20 16.00 LAU 2019 12 10 21 17.96 LAU 2019 12 10 22 19.92 LAU 2019 12 10 23 20.52 LAU 2019 12 11 00 21.84 LAU 2019 12 11 01 22.69 LAU 2019 12 11 02 23.81 LAU 2019 12 11 03 24.85 LAU 2019 12 11 04 24.95 LAU 2019 12 11 05 24.31 LAU 2019 12 11 06 23.62 LAU 2019 12 11 07 25.74 LAU 2019 12 11 08 25.79 LAU 2019 12 11 09 25.67 LAU 2019 12 11 10 25.35 LAU 2019 12 11 11 14.13 LAU 2019 12 11 12 12.76 LAU 2019 12 11 13 9.16 LAU 2019 12 11 14 7.30 LAU 2019 12 11 15 8.31 LAU 2019 12 11 16 6.45 LAU 2019 12 11 17 5.05 LAU 2019 12 11 18 6.94 LAU 2019 12 11 19 14.18 LAU 2019 12 11 20 20.45 LAU 2019 12 11 21 23.45 LAU 2019 12 11 22 25.01 LAU 2019 12 11 23 26.97 LAU 2019 12 12 00 28.27 LAU 2019 12 12 01 29.06 LAU 2019 12 12 02 30.27 LAU 2019 12 12 03 30.10 LAU 2019 12 12 04 29.92 LAU 2019 12 12 05 28.85 LAU 2019 12 12 06 24.62 LAU 2019 12 12 07 22.46 LAU 2019 12 12 08 21.03 LAU 2019 12 12 09 20.02 LAU 2019 12 12 10 20.43 LAU 2019 12 12 11 18.40 LAU 2019 12 12 12 15.02 LAU 2019 12 12 13 14.78 LAU 2019 12 12 14 12.74 LAU 2019 12 12 15 16.62 LAU 2019 12 12 16 18.62 LAU 2019 12 12 17 19.84 LAU 2019 12 12 18 27.11 LAU 2019 12 12 19 26.39 LAU 2019 12 12 20 28.30 LAU 2019 12 12 21 26.99 LAU 2019 12 12 22 25.98 LAU 2019 12 12 23 23.27 LAU 2019 12 13 00 24.64 LAU 2019 12 13 01 25.98 LAU 2019 12 13 02 25.17 LAU 2019 12 13 03 24.16 LAU 2019 12 13 04 23.16 LAU 2019 12 13 05 22.41 LAU 2019 12 13 06 21.82 LAU 2019 12 13 07 23.34 LAU 2019 12 13 08 23.54 LAU 2019 12 13 09 23.29 LAU 2019 12 13 10 24.23 LAU 2019 12 13 11 23.77 LAU 2019 12 13 12 23.59 LAU 2019 12 13 13 22.85 LAU 2019 12 13 14 21.40 LAU 2019 12 13 15 20.72 LAU 2019 12 13 16 19.23 LAU 2019 12 13 17 17.32 LAU 2019 12 13 18 18.08 LAU 2019 12 13 19 18.31 LAU 2019 12 13 20 19.20 LAU 2019 12 13 21 19.77 LAU 2019 12 13 22 19.61 LAU 2019 12 13 23 19.88 LAU 2019 12 14 00 20.91 LAU 2019 12 14 01 20.60 LAU 2019 12 14 02 19.71 LAU 2019 12 14 03 19.52 LAU 2019 12 14 04 19.74 LAU 2019 12 14 05 19.30 LAU 2019 12 14 06 19.14 LAU 2019 12 14 07 19.00 LAU 2019 12 14 08 18.37 LAU 2019 12 14 09 18.49 LAU 2019 12 14 10 18.18 LAU 2019 12 14 11 16.52 LAU 2019 12 14 12 14.98 LAU 2019 12 14 13 15.17 LAU 2019 12 14 14 15.19 LAU 2019 12 14 15 15.48 LAU 2019 12 14 16 16.99 LAU 2019 12 14 17 16.96 LAU 2019 12 14 18 16.43 LAU 2019 12 14 19 13.73 LAU 2019 12 14 20 15.77 LAU 2019 12 14 21 16.17 LAU 2019 12 14 22 15.97 LAU 2019 12 14 23 15.87 LAU 2019 12 15 00 14.54 LAU 2019 12 15 01 15.28 LAU 2019 12 15 02 16.06 LAU 2019 12 15 03 16.54 LAU 2019 12 15 04 16.50 LAU 2019 12 15 05 16.32 LAU 2019 12 15 06 15.52 LAU 2019 12 15 07 13.71 LAU 2019 12 15 08 12.84 LAU 2019 12 15 09 12.18 LAU 2019 12 15 10 12.04 LAU 2019 12 15 11 11.70 LAU 2019 12 15 12 10.25 LAU 2019 12 15 13 9.70 LAU 2019 12 15 14 8.71 LAU 2019 12 15 15 7.74 LAU 2019 12 15 16 5.78 LAU 2019 12 15 17 5.46 LAU 2019 12 15 18 -0.01 LAU 2019 12 15 19 7.60 LAU 2019 12 15 20 14.41 LAU 2019 12 15 21 15.79 LAU 2019 12 15 22 17.20 LAU 2019 12 15 23 19.65 LAU 2019 12 16 00 21.02 LAU 2019 12 16 01 21.68 LAU 2019 12 16 02 21.58 LAU 2019 12 16 03 22.12 LAU 2019 12 16 04 22.41 LAU 2019 12 16 05 21.64 LAU 2019 12 16 06 20.81 LAU 2019 12 16 07 19.68 LAU 2019 12 16 08 19.85 LAU 2019 12 16 09 19.48 LAU 2019 12 16 10 18.04 LAU 2019 12 16 11 17.31 LAU 2019 12 16 12 13.74 LAU 2019 12 16 13 12.91 LAU 2019 12 16 14 13.02 LAU 2019 12 16 15 11.44 LAU 2019 12 16 16 12.83 LAU 2019 12 16 17 12.95 LAU 2019 12 16 18 15.54 LAU 2019 12 16 19 15.55 LAU 2019 12 16 20 15.57 LAU 2019 12 16 21 15.40 LAU 2019 12 16 22 17.00 LAU 2019 12 16 23 16.20 LAU 2019 12 17 00 18.04 LAU 2019 12 17 01 19.21 LAU 2019 12 17 02 20.45 LAU 2019 12 17 03 18.77 LAU 2019 12 17 04 18.68 LAU 2019 12 17 05 19.61 LAU 2019 12 17 06 18.81 LAU 2019 12 17 07 18.82 LAU 2019 12 17 08 18.30 LAU 2019 12 17 09 17.09 LAU 2019 12 17 10 13.11 LAU 2019 12 17 11 12.25 LAU 2019 12 17 12 11.13 LAU 2019 12 17 13 12.04 LAU 2019 12 17 14 9.55 LAU 2019 12 17 15 9.07 LAU 2019 12 17 16 7.09 LAU 2019 12 17 17 6.17 LAU 2019 12 17 18 7.46 LAU 2019 12 17 19 9.09 LAU 2019 12 17 20 12.95 LAU 2019 12 17 21 15.40 LAU 2019 12 17 22 16.55 LAU 2019 12 17 23 16.77 LAU 2019 12 18 00 18.12 LAU 2019 12 18 01 19.42 LAU 2019 12 18 02 19.45 LAU 2019 12 18 03 19.21 LAU 2019 12 18 04 18.20 LAU 2019 12 18 05 17.90 LAU 2019 12 18 06 17.63 LAU 2019 12 18 07 15.97 LAU 2019 12 18 08 13.83 LAU 2019 12 18 09 10.79 LAU 2019 12 18 10 8.71 LAU 2019 12 18 11 6.13 LAU 2019 12 18 12 6.09 LAU 2019 12 18 13 4.45 LAU 2019 12 18 14 5.47 LAU 2019 12 18 15 6.31 LAU 2019 12 18 16 6.68 LAU 2019 12 18 17 12.61 LAU 2019 12 18 18 17.40 LAU 2019 12 18 19 19.30 LAU 2019 12 18 20 18.88 LAU 2019 12 18 21 19.61 LAU 2019 12 18 22 21.96 LAU 2019 12 18 23 22.63 LAU 2019 12 19 00 21.76 LAU 2019 12 19 01 20.97 LAU 2019 12 19 02 19.19 LAU 2019 12 19 03 18.43 LAU 2019 12 19 04 18.10 LAU 2019 12 19 05 17.92 LAU 2019 12 19 06 18.20 LAU 2019 12 19 07 17.22 LAU 2019 12 19 08 16.47 LAU 2019 12 19 09 15.87 LAU 2019 12 19 10 17.41 LAU 2019 12 19 11 19.45 LAU 2019 12 19 12 19.14 LAU 2019 12 19 13 19.29 LAU 2019 12 19 14 20.34 LAU 2019 12 19 15 21.51 LAU 2019 12 19 16 20.92 LAU 2019 12 19 17 9999.99 LAU 2019 12 19 18 9999.99 LAU 2019 12 19 19 9999.99 LAU 2019 12 29 03 17.84 LAU 2019 12 29 04 17.61 LAU 2019 12 29 05 17.50 LAU 2019 12 29 06 18.26 LAU 2019 12 29 07 19.20 LAU 2019 12 29 08 18.22 LAU 2019 12 29 09 17.15 LAU 2019 12 29 10 17.45 LAU 2019 12 29 11 19.13 LAU 2019 12 29 12 20.08 LAU 2019 12 29 13 22.02 LAU 2019 12 29 14 23.81 LAU 2019 12 29 15 24.55 LAU 2019 12 29 16 23.67 LAU 2019 12 29 17 20.35 LAU 2019 12 29 18 19.73 LAU 2019 12 29 19 21.90 LAU 2019 12 29 20 25.41 LAU 2019 12 29 21 26.26 LAU 2019 12 29 22 25.62 LAU 2019 12 29 23 25.10 LAU 2019 12 30 00 24.50 LAU 2019 12 30 01 24.34 LAU 2019 12 30 02 23.65 LAU 2019 12 30 03 24.37 LAU 2019 12 30 04 25.17 LAU 2019 12 30 05 22.73 LAU 2019 12 30 06 21.11 LAU 2019 12 30 07 19.86 LAU 2019 12 30 08 15.97 LAU 2019 12 30 09 14.09 LAU 2019 12 30 10 11.80 LAU 2019 12 30 11 14.50 LAU 2019 12 30 12 13.13 LAU 2019 12 30 13 10.72 LAU 2019 12 30 14 9.16 LAU 2019 12 30 15 9.67 LAU 2019 12 30 16 5.60 LAU 2019 12 30 17 4.66 LAU 2019 12 30 18 7.67 LAU 2019 12 30 19 10.14 LAU 2019 12 30 20 13.81 LAU 2019 12 30 21 16.28 LAU 2019 12 30 22 18.17 LAU 2019 12 30 23 17.48 LAU 2019 12 31 00 18.36 LAU 2019 12 31 01 17.90 LAU 2019 12 31 02 17.69 LAU 2019 12 31 03 16.10 LAU 2019 12 31 04 15.26 LAU 2019 12 31 05 14.73 LAU 2019 12 31 06 13.36 LAU 2019 12 31 07 12.59 LAU 2019 12 31 08 11.37 LAU 2019 12 31 09 9.78 LAU 2019 12 31 10 8.92 LAU 2019 12 31 11 9.14 LAU 2019 12 31 12 6.70 LAU 2019 12 31 13 4.73 LAU 2019 12 31 14 3.55 LAU 2019 12 31 15 2.82 LAU 2019 12 31 16 3.66 LAU 2019 12 31 17 4.06 LAU 2019 12 31 18 4.11 LAU 2019 12 31 19 5.94 LAU 2019 12 31 20 10.11 LAU 2019 12 31 21 12.38 LAU 2019 12 31 22 15.79 LAU 2019 12 31 23 20.93