On Table view,
pick
Stats
button, and then 2D graph option, 2D graph, color code (text/integer). Depth should go on the Yaxis, and if you use a field name like "DEPTH" or "DEPTH_MBSF" it will be automatically reversed. Use "SITE" for the color coding. 

Each unique value in the color coding variable will have a different
color.


The program will produce a legend, on the File (graph) menu or by
right clicking within the graph. You can put that legend on the
graph by:


If you want a single Site, use the
Filter option. Pick Site from the drop down list of DB fields, set the operator to the right to "=", and enter the value. Pick Add condition. 

Pick Apply filter.  
Filtered graph. Note that this site appears to have two sedimentation rates:
Click on the graph to get the coordinates in a popup window, and they appear on the status bar as you roam with the mouse. 

Use button on the graph's toolbar to measure slope between two points on the graph. Accuracy will be best if the points are far apart, and the graph is as large as possible so the points selected will have the correct coordinates.  
last revised 10/31/2022