Articfox918 said:yeah you can do that too. I usually just add the data from the last test if I dont test, but when you are on the graph left click the data you want to add a best fit to and click add trend line, then choose the method you want to use for trending I havent used it in a while but I thing moving average would probably be best
I tried that and it draws the trendline in addition to the actual data, then i found while editing the data series *Select Data* then chose a series such as H20 Temp then click the Hidden and Empty Cells option then select Connect data points with a line.... PERFECT! Thanks Again!