Data produced as part of ESA Terrafirma project. The PSI processing has been carried out by FNPA ([email protected]). PSI processing used 32 scenes of ERS-1 ERS-2 ENVISAT data. Number of of points = 30735, Point density = 40 PS/km2, Reference point location is lon: -8.48168622911, lat: 51.8933064154. Terrafirma service providers have been validated by the ESA funded ValProj (http://www.terrafirma.eu.com/product_validation.htm) and passed an assessment to be a certified service provider.