Table 7: Number of counts and fluences for the O  VIII and O  VII lines.

Star		 Line Spectrum Cts(tot) Cts(bkg) Cts(cont) Cts(line) Eff. Area Fluence Prob.1
    used         [cm2] [ph/cm2]  
BP Tau O  VIII RGS2 81 10.57 11.53 $58.90 \pm 9.13$ 52.5 $1.12 \pm 0.17$ 0.
  O  VII RGS1 80 26.26 13.44 $40.30 \pm 9.24$ 41 $0.98 \pm 0.23$ $1.2\times 10^{-8}$
V773 Tau O  VIII RGS2 91 4.83 13.06 $73.11 \pm 9.59$ 53 $1.38 \pm 0.18$ 0.
  O  VII RGS1 26 5.77 11.15 $9.08 \pm 5.21 $ 41 $0.22 \pm 0.13$ $2.4\times 10^{-2} $
V410 Tau O  VIII RGS2 82 3.61 14.78 $63.61 \pm 9.10$ 52 $1.39 \pm 0.20$ 0.
  O  VII RGS1 40 11.45 24.52 $4.03 \pm 6.51 $ 41 $0.10 \pm 0.16$ 0.27
HP Tau O  VIII RGS2 18 5.11 2.83 $10.50 \pm 4.37$ 53 $0.20 \pm 0.08$ $7.8\times 10^{-4}$
  O  VII RGS1 6 7.61 1.11 <2.4 41 <0.06 0.87
SU Aur O  VIII RGS2 59 11.37 10.36 $37.27 \pm 7.87$ 53 $0.90 \pm 0.19$ 0.
  O  VII RGS1 42 34.83 8.78 <6.5 41 <0.16 0.62
DH Tau O  VIII RGS2 67 6.59 10.02 $50.39 \pm 8.27$ 53 $0.95 \pm 0.16$ 0.
  O  VII RGS1 44 25.39 8.03 $10.58 \pm 7.62$ 41 $0.25 \pm 0.19$ $4.5\times 10^{-2} $
DN Tau O  VIII RGS1 17 3.37 3.06 $10.57 \pm 4.21$ 46 $0.27 \pm 0.11$ $3.8\times 10^{-4} $
  O  VII RGS1 20 6.66 4.32 $9.02 \pm 4.62$ 41 $0.22 \pm 0.11$ $9.1\times 10^{-3} $
AB Aur O  VIII RGS1 54 14.57 4.05 $35.38 \pm 7.60$ 43 $0.82 \pm 0.18$ 0.
  O  VII RGS1 76 31.35 6.02 $38.62 \pm 9.16$ 38 $0.98 \pm 0.25$ $2.0 \times 10^{-8}$
HD 283572 O  VIII RGS2 $\approx$117 - 33.07 $83.91 \pm 10.81$ 52.5 $1.60 \pm 0.21$ 0.
  O  VII RGS1 $\approx$55 - 36.51 $18.18 \pm 7.40$ 41 $0.44 \pm 0.18$ $2.6\times 10^{-3}$

1 Probability that the measured number of counts is due to fluctuations in the background and continuum.

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