Ultra-violet measurements from station Izaña (2021-09)

As of September 19, 2021, the radiation measurements are affected by the volcanic eruption of the island of La Palma, by the arrival of volcanic aerosol.截至2021年9月19日，辐射测量结果受到拉帕尔马岛火山喷发及火山气溶胶抵达的影响。