Zonal Statistic As Table--Problem calculating MEAN-Values

[Anonymous User]

Original User: patflo

Hello i`ve got a problem doing the zonal statistic calculation with a layer and a shape-file. My layer is a temperature layer for europe and my shapefile is a polygon shapefile from Germany. When i want to do the MEAN calculation for every polygon in the shapefile it gives me MEAN-Values for the temperature of -1100 degrees. I think the problem is that some of the polygons are not fully covered by the raster layer? Has someone an idea how to get the correct values?

in the attachement i put a pic of the shapefile with the raster layer and the table.

Thanks in advance for your help

[FlorianPattis]

UPDATE: I tried to do the same task in the ArcGis 9.3 Version and it worked correct. There are no values with -1170 in the zonal statistics table so i think this is a bug in the Arcgis10 Version.