Merging Raster tiles from AsterGDEM in ArcGIS 9.3

Discussion created by mwiruki24 on Mar 8, 2012
Hi Friends
I need help on how to merge AsterGDEM tiles. the process is clear in Spatial Analyst, on the OPTION menu but when i merge the tiles the results look odd.
Going to the Table of Contents and clicking on Attribute Table of the merger raster I find it having a height which is the sum of all other Value* column. The Count column also summs all other counts of other values. So I have all the topograpphy looking odd.

Kindly help me with the right procedure to merge AsterGDEM tiles or how to edit its Attibute table.