Data produced as part of ESA Terrafirma project. The PSI processing has been carried out by Hansje Brinker BV ([email protected]). PSI processing used 20 scenes of Envisat data. Number of of points = 1864, Point density = 31 PS/km2, Reference point location is lon: 8.122684, lat: 53.52387. 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.