Hi @jsolo01 ,
It looks like you've used Graph Builder to generate those plots, is that right? When you do that, JMP will create lines of fit for all the Overlay graphs you have -- i.e. the ASID Total. The shaded areas around the lines are the 95% confidence intervals on the fit (I believe). It doesn't sound like that's what you are after.
I would recommend doing a Fit Y by X, where you cast the FVC Female and FVC Male columns in the Y role and the Days Between FVC Final in the X role. Then, cast the ASID Total column in the "By" role. This will generate the 60 (or however many ASID levels you have) Fit Y by X graphs. Note, you might want to change your ASID to Ordinal or Character since it appears to be an identifier label and not necessarily a continuous variable.
Then, do a CTRL-left click (broadcast) on the first Bivariate fit red hot button and select Fit Line. This will fit a line to all the data. In the Summary of Fit report table, you can right click and select "Make Into Combined Data Table" and JMP will generate a combined data table with the values of the summary of fit table. You can then review things like R^2 or R^2Adj and so forth. You can do the same for the Analysis of Variance table report to review the F-Ratio and Prob > F for all the fits.
I think this might be a better way to go about comparing so many different lines of fit. At least, it is my way of thinking about it based on your description.
I've attached a couple data tables with scripts you can run to see what I've done in mocking up a data table to be kind of like what it seems you're dealing with.
Hope this helps!,
DS
