Contributions of the four plasma components to the best-fit model of the RGS spectrum of ζ Pup (model₁, solid black line): kT₁ = 0.10 keV (dotted red line), kT₂ = 0.20 keV (dashed green line), kT₃ = 0.40 keV (dotted-dashed blue line) and kT₄ = 0.69 keV (in long dashed-dotted pink line).