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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
TOA radiances measured by PRISMA and Sentinel-2/MSI (S2), and simulated with 6SV (labelled as in situ). Symbol * means that Sentinel-2 and PRISMA overpasses occurred on the same day.