Update download_elevation_file.tex

doc/download_elevation_file.tex

@@ -88,17 +88,14 @@ \subsection*{Defining Your Simulation Area}
 
 \subsection*{Elevation Data Source}
 
-There are 4 possible on-line data sets to download elevation data from.  These are listed in the \textit{Data Source} drop-down box at the top left of the graphics window.  The main difference between these data sets is the spatial resolution and extent.  The table below briefly describes these differences.  You should be sure to choose a data set that covers your simulation area.
+There are 3 possible on-line data sets to download elevation data from.  These are listed in the \textit{Data Source} drop-down box at the top left of the graphics window.  The main difference between these data sets is the spatial resolution and extent.  The table below briefly describes these differences.  You should be sure to choose a data set that covers your simulation area.
 
 \begin{center}
     \begin{tabular}{| l | l | p{1.75in} | p{1.8in} |}
     \hline
     Data set name & Resolution & Spatial Extent & Description \\ \hline
 
-    US SRTM & 30 meters  & Contiguous US, Hawaii, PR, Southern Alaska &
-    Data from the Shuttle Radar Tomography Mission (SRTM) \\ \hline
-
-    WORLD SRTM & 90 meters & Between approximately -60 and +60 latitude &
+    WORLD SRTM & 30 meters & Between approximately -60 and +60 latitude &
     Data from the Shuttle Radar Tomography Mission (SRTM) \\ \hline
 
     WORLD GMTED & 250 meters & Between approximately -60 and +85 latitude &
@@ -114,4 +111,4 @@ \section*{Download The File}
 Once you have defined your download area and selected the elevation data source, click the \textit{Download File} button at the top left of the graphics window to download the elevation file.  A window will open to allow you to specify a file name and location. The downloaded file will be a GeoTIFF file (*.tif) in best fit UTM projection using WGS84. After the file is successfully downloaded, you can close the Download elevation file window and the downloaded file will be automatically loaded into the main WindNinja window.
 
 
-\end{document}
+\end{document}