Log (upper panel) and I_tot (lower panel) vs. time. Upper panel: Log vs. time for a moderately active G2 star, seen edge-on (black dots). The red curves is the smoothed (over one year) series, and the red points are yearly averages. Lower panel: same for I_tot vs. time. The orange dots only represent the plage contribution (the dashed orange line indicates the average level), and the green dots represent the spot contribution (the horizontal dashed green lines indicates the average level) for ΔTspot₁.