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Measured (black) and expected (blue) values  Station Gerlitzen is operated by Observatorium Kanzelhöhe für Sonnen- und Umweltforschung, Universität Graz
Forecast is valid for clear sky and an amount of ozone forecasted by NOAA to be 346 DU |
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| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | >10 |
| low | moderate | high | very high | extreme | ||||||