Data produced as part of ESA Terrafirma project. The PSI processing has been carried out by GRS (
[email protected]). PSI processing used 42 scenes of ERS-1 ERS-2 ENVISAT data. Number of of points = 697, Point density = 80 PS/km2, Reference point location is lon: 22.7429955624, lat: 39.4656887475. 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.