With the trend on screen I use Prt Screen to copy the screen to the clipboard. Then open any graphics program (Paint will work fine) and use the Paste menu function to put the graph into PAint. You can crop or not as you wish, then save as a *.jpg file. Now you can email it to anyone!
This works with any Windows program, and I use it all the time. You can do this with anty SCADA software, for example, if you just want a snapshot and don't want to figure out how to do a CSV file or such.