French to English Science Biology (-tech,-chem,micro-) chromatogram

Hi,
I am translating a chromatogram graph for an antibiotic with different concentrations.
The x-axis is the antibiotic concentration and the y-axis is the peak AUC (area under the curve)
I then have a vertical line with the title "Linéaire (Points de gamme)" with several blue dots and one red dot:
- red dot = points de validation = validation points
- blue dots = points de gamme = range points???

Could anyone please confirm that I am on the right track.

Thanks

Joanna