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Measured (black) and expected (blue) values  Station Aosta is operated by ARPA Valle d'Aosta
Forecast is valid for clear sky and an amount of ozone forecasted by NOAA to be 339 DU |
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| no online data available |
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| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | >10 |
| low | moderate | high | very high | extreme | ||||||