Table 2: Characteristics of observations and $\chi ^{2}$ probabilities.
Object $\Delta $ RVa $\overline\mathit{RV}_{\rm weighted}$b No. obs.c Min. $\Delta $t Max. $\Delta $t p  
  [km s-1] [km s-1]   [days] [days]    
Cha H$\alpha $ 1 0.24 16.27 $\pm$ 0.52 3 20 2113 8.3 $\times 10^{-1}$  
Cha H$\alpha $ 2 0.15 16.25 $\pm$ 0.49 3 20 2113 8.7 $\times 10^{-1}$  
Cha H$\alpha $ 3 0.99 14.86 $\pm$ 0.89 3 19 2111 5.6 $\times 10^{-2}$  
Cha H$\alpha $ 4 0.21 14.85 $\pm$ 0.43 11 1 701 1.0  
Cha H$\alpha $ 5 0.13 15.59 $\pm$ 0.48 3 19 2111 8.7 $\times 10^{-1}$  
Cha H$\alpha $ 6 0.28 16.52 $\pm$ 0.56 3 19 2112 6.3 $\times 10^{-1}$  
Cha H$\alpha $ 7 0.58 17.09 $\pm$ 0.98 2 19 19 1.5 $\times 10^{-1}$  
Cha H$\alpha $ 8 1.38 16.62 $\pm$ 0.67 11 3 2542 0.0 vari.
Cha H$\alpha $ 12 0.96 15.29 $\pm$ 0.93 3 20 2113 5.6 $\times 10^{-3}$  
B 34 0.07 15.74 $\pm$ 0.42 6 6 2083 1.0  
CHXR 74 2.39 16.71 $\pm$ 0.81 13 1 2285 0.0 vari.
a Half peak-to-peak RV differences; b the error of the weighted mean takes an uncertainty of 400 m s-1 into account for the zero point of the velocity; c includes data from Table 1, Joergens (2006a), and Joergens & Müller (2007).


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