I am trying to calculate mean slope in given polygons. I first interpolate my (x,y,z) data to create a raster file and use the terrain analysis tool to calculate slope. Then I use the zonal statitistics to obtain slope within each polygon (how-to-calculate-raster-statistics-for-polygons).

I have two issues.

1. The results are appended to the polygon shapefile. Is there a way to extract the results as a text file ?
2. Apparently I get only one value (i.e. one mean, one max, one median, etc) while I have 6 polygons. My polygons overlay but I get this problem even if they do not. How can I have separate results from each polygon ?

Many thanks!