\begin{table} %\centering \par %\footnotesize \caption{\label{tableA3}Fluxes and luminosities.} \begin{tabular}{lrrrrrrrl} \hline \hline \noalign{\smallskip} Star & $f_{\rm [Ne~II]}$\tablefootmark{a} & $L_{\rm [Ne~II]}$ &$f_{\rm X, 0.3{-}10, abs}$&$L_{\rm X, 0.3{-}10, abs}$&$f_{\rm X, 0.3{-}10, unabs}$&$L_{\rm X, 0.3{-}10, unabs}$& $N_{\rm H}^b$ & Refs.\tablefootmark{c}\\ & (erg~cm$^{-2}$~s$^{-1}$) & (erg~s$^{-1}$) &(erg~cm$^{-2}$~s$^{-1}$)& (erg~s$^{-1}$) &(erg~cm$^{-2}$~s$^{-1}$) & (erg~s$^{-1}$) & ($10^{22}$) & \\ \hline RNO~15 & $<$$2.6(0.85)\phantom{ }\times 10^{-14} $ & $<$$1.9\times 10^{29}$ & $3.7\times 10^{-13}$ & $2.8\times 10^{30}$ & $1.1\times 10^{-12}$ & $8.0\times 10^{30}$ & 4.6 & 1, X \\ LkH$\alpha$~270 & $ 1.3(0.35)\phantom{ }\times 10^{-14} $ & $ 9.7\times 10^{28}$ & $3.2\times 10^{-13}$ & $2.4\times 10^{30}$ & $1.5\times 10^{-12}$ & $1.1\times 10^{31}$ & 0.78 & 1, X \\ LkH$\alpha$~271 & $<$$3.6(1.2)\phantom{0}\times 10^{-15} $ & $<$$2.7\times 10^{28}$ & $3.8\times 10^{-14}$ & $2.8\times 10^{29}$ & $1.1\times 10^{-13}$ & $7.9\times 10^{29}$ & 3.8 & 1, X \\ LkH$\alpha$~326 & $ 3.1(1.4)\phantom{0}\times 10^{-15} $ & $ 2.3\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ LkH$\alpha$~327 & $ 7.8(3.8)\phantom{0}\times 10^{-15} $ & $ 5.8\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ LkH$\alpha$~330 & $ 3.8(1.9)\phantom{0}\times 10^{-15} $ & $ 2.8\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ IRAS 03446+3254 & $ 4.3(0.99)\phantom{ }\times 10^{-15} $ & $ 3.2\times 10^{28}$ & ... & ... & ... & ... & ... & 1, X \\ BP~Tau & $ 2.9(0.4)\phantom{0}\times 10^{-15} $ & $ 6.8\times 10^{27}$ & $4.3\times 10^{-13}$ & $1.0\times 10^{30}$ & $6.1\times 10^{-13}$ & $1.4\times 10^{30}$ & 0.09 & 3, X \\ FM~Tau & $<$$1.1(0.37)\phantom{ }\times 10^{-14} $ & $<$$2.6\times 10^{28}$ & $1.5\times 10^{-13}$ & $3.5\times 10^{29}$ & $2.2\times 10^{-13}$ & $5.1\times 10^{29}$ & 0.15 & 3, X \\ T~Tau N & $ 2.0(0.4)\phantom{0}\times 10^{-13} $ & $ 4.7\times 10^{29}$ & $1.9\times 10^{-12}$ & $4.4\times 10^{30}$ & $4.0\times 10^{-12}$ & $9.4\times 10^{30}$ & 0.34 & 5, X \\ T~Tau S & $ 1.1(0.5)\phantom{0}\times 10^{-12} $ & $ 2.6\times 10^{30}$ & ... & ... & $4.0\times 10^{-12}$ & $9.4\times 10^{30}$ & 1.6\tablefootmark{d} & 5, X \\ LkCa~8 & $ 5.0(0.93)\phantom{ }\times 10^{-15} $ & $ 1.2\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ DG~Tau & $ 2.6(0.09)\phantom{ }\times 10^{-13} $ & $ 6.1\times 10^{29}$ & $1.3\times 10^{-13}$ & $3.0\times 10^{29}$ & $2.3\times 10^{-13}$ & $5.5\times 10^{29}$ & 2.1$^e$ & 3, X \\ IQ~Tau & $ 9.9(1.6)\phantom{0}\times 10^{-15} $ & $ 2.3\times 10^{28}$ & $8.3\times 10^{-14}$ & $2.0\times 10^{29}$ & $1.4\times 10^{-13}$ & $3.2\times 10^{29}$ & 0.35 & 1, X \\ FX~Tau & $<$$5.7(1.9)\phantom{0}\times 10^{-15} $ & $<$$1.3\times 10^{28}$ & $8.2\times 10^{-14}$ & $1.9\times 10^{29}$ & $1.7\times 10^{-13}$ & $3.9\times 10^{29}$ & 0.20 & 1, X \\ DK~Tau & $3.5(0.7)\phantom{0}\times 10^{-15} $ & $ 8.2\times 10^{27}$ & $2.0\times 10^{-13}$ & $4.6\times 10^{29}$ & $3.6\times 10^{-13}$ & $8.4\times 10^{29}$ & 0.24 & 3, X \\ V710~Tau & $<$$2.4(0.8)\phantom{0}\times 10^{-15} $ & $<$$5.6\times 10^{27}$ & $2.5\times 10^{-13}$ & $5.9\times 10^{29}$ & $5.0\times 10^{-13}$ & $1.2\times 10^{30}$ & 0.23 & 1, X \\ GI~Tau & $8.4(0.5)\phantom{0}\times 10^{-15} $ & $ 2.0\times 10^{28}$ & $1.6\times 10^{-13}$ & $3.8\times 10^{29}$ & $2.8\times 10^{-13}$ & $6.7\times 10^{29}$ & 0.31 & 3, X \\ GK~Tau & $4.5(0.6)\phantom{0}\times 10^{-15} $ & $ 1.1\times 10^{28}$ & $2.3\times 10^{-13}$ & $5.4\times 10^{29}$ & $5.3\times 10^{-13}$ & $1.2\times 10^{30}$ & 0.40 & 3, X \\ HN~Tau & $2.4(0.48)\phantom{ }\times 10^{-14} $ & $ 5.6\times 10^{28}$ & $8.0\times 10^{-14}$ & $1.9\times 10^{29}$ & $1.4\times 10^{-13}$ & $3.2\times 10^{29}$ & 1.1\tablefootmark{e} & 3, X \\ DM~Tau & $5.5(-)\phantom{00}\times 10^{-15} $ & $ 1.3\times 10^{28}$ & $5.7\times 10^{-13}$ & $1.3\times 10^{30}$ & $8.4\times 10^{-13}$ & $2.0\times 10^{30}$ & 0.14 & 6, X \\ AA~Tau & $1.2(0.04)\phantom{ }\times 10^{-14} $ & $ 2.8\times 10^{28}$ & $2.0\times 10^{-13}$ & $4.6\times 10^{29}$ & $4.4\times 10^{-13}$ & $1.0\times 10^{30}$ & 0.93 & 3, X \\ DN~Tau & $<$$4.2(1.4)\phantom{0}\times 10^{-15} $ & $<$$9.9\times 10^{27}$ & $3.7\times 10^{-13}$ & $8.7\times 10^{29}$ & $4.6\times 10^{-13}$ & $1.1\times 10^{30}$ & 0.058 & 1, X \\ CoKu Tau 3 & $ 3.8(1.5)\phantom{0}\times 10^{-15} $ & $ 8.9\times 10^{27}$ & $1.1\times 10^{-12}$ & $2.6\times 10^{30}$ & $2.4\times 10^{-12}$ & $5.7\times 10^{30}$ & 0.38 & 1, X \\ DO~Tau & $ 8.0(0.9)\phantom{0}\times 10^{-15} $ & $ 1.9\times 10^{28}$ & $3.1\times 10^{-14}$ & $7.3\times 10^{28}$ & $1.0\times 10^{-13}$ & $2.4\times 10^{29}$ & 0.63 & 3, X \\ CoKu Tau 4 & $ 2.7(0.8)\phantom{0}\times 10^{-15} $ & $ 6.3\times 10^{27}$ & ... & ... & ... & ... & ... & 1 \\ DP~Tau & $<$$1.1(0.55)\phantom{ }\times 10^{-14} $ & $<$$2.6\times 10^{28}$ & $1.8\times 10^{-14}$ & $4.2\times 10^{28}$ & $4.2\times 10^{-14}$ & $9.9\times 10^{28}$ & 3.8$^e$ & 4, X \\ UY~Aur & $2.2(0.28)\phantom{ }\times 10^{-14} $ & $ 5.2\times 10^{28}$ & $1.1\times 10^{-13}$ & $2.6\times 10^{29}$ & $1.7\times 10^{-13}$ & $4.0\times 10^{29}$ & 0.12 & 3, X \\ GM~Aur & $1.2(0.06)\phantom{ }\times 10^{-14} $ & $ 2.8\times 10^{28}$ & $5.1\times 10^{-13}$ & $1.2\times 10^{30}$ & $6.8\times 10^{-13}$ & $1.6\times 10^{30}$ & 0.11 & 3, X \\ V836~Tau & $ 1.1(0.65)\phantom{ }\times 10^{-14} $ & $ 2.6\times 10^{28}$ & $4.6\times 10^{-13}$ & $1.1\times 10^{30}$ & $7.2\times 10^{-13}$ & $1.7\times 10^{30}$ & 0.23 & 3, C \\ RW~Aur & $<$$8.2(2.0)\phantom{0}\times 10^{-15} $ & $<$$1.9\times 10^{28}$ & $4.0\times 10^{-13}$ & $9.4\times 10^{29}$ & $7.0\times 10^{-13}$ & $1.6\times 10^{30}$ & 0.22 & 3, X \\ BF~Ori & $<$$1.4(0.48)\phantom{ }\times 10^{-14} $ & $<$$2.7\times 10^{29}$ & $1.4\times 10^{-14}$ & $2.7\times 10^{29}$ & $1.7\times 10^{-13}$ & $3.2\times 10^{30}$ & 0.04 & 1, X \\ IRAS 08267-3336 & $ 8.3(1.2)\phantom{0}\times 10^{-15} $ & $ 1.6\times 10^{29}$ & $4.9\times 10^{-14}$ & $9.3\times 10^{29}$ & $9.3\times 10^{-13}$ & $1.8\times 10^{31}$ & 0.86 & 1, X \\ WX~Cha & $<$$4.8(1.6)\phantom{0}\times 10^{-15} $ & $<$$1.8\times 10^{28}$ & $2.8\times 10^{-13}$ & $1.1\times 10^{30}$ & $1.2\times 10^{-12}$ & $4.6\times 10^{30}$ & 0.58 & 1, X \\ SX~Cha & $<$$8.1(2.7)\phantom{0}\times 10^{-15} $ & $<$$3.1\times 10^{28}$ & $4.5\times 10^{-14}$ & $1.7\times 10^{29}$ & $6.7\times 10^{-14}$ & $2.6\times 10^{29}$ & 0.15 & 1, X \\ SY~Cha & $ 2.6(1.0)\phantom{0}\times 10^{-15} $ & $ 9.9\times 10^{27}$ & $1.3\times 10^{-13}$ & $4.8\times 10^{29}$ & $1.8\times 10^{-13}$ & $6.9\times 10^{29}$ & 0.10 & 1, X \\ TW~Cha & $<$$3.3(1.1)\phantom{0}\times 10^{-15} $ & $<$$1.3\times 10^{28}$ & $2.0\times 10^{-13}$ & $7.5\times 10^{29}$ & $3.7\times 10^{-13}$ & $1.4\times 10^{30}$ & 0.18 & 1, X \\ TW~Hya & $5.9(1.1)\phantom{0}\times 10^{-14} $ & $ 2.3\times 10^{28}$ & $4.0\times 10^{-12}$ & $1.5\times 10^{30}$ & $5.3\times 10^{-12}$ & $2.1\times 10^{30}$ & 0.044 & 4, X \\ CS~Cha & $4.3(-)\phantom{00}\times 10^{-14} $ & $ 1.6\times 10^{29}$ & $8.2\times 10^{-13}$ & $3.1\times 10^{30}$ & $1.0\times 10^{-12}$ & $3.8\times 10^{30}$ & 0.042 & 6, X \\ BYB~35 & $<$$1.2(0.4)\phantom{0}\times 10^{-15} $ & $<$$4.6\times 10^{27}$ & ... & ... & $<$$1.1\times 10^{-13}$ & $<$$4.3\times 10^{29}$ & 3.8\tablefootmark{f} & 1, X \\ CHXR~30 & $<$$2.1(0.7)\phantom{0}\times 10^{-15} $ & $<$$8.0\times 10^{27}$ & $1.4\times 10^{-13}$ & $5.2\times 10^{29}$ & $9.8\times 10^{-13}$ & $3.7\times 10^{30}$ & 1.2 & 3, X \\ VW~Cha & $ 3.7(0.33)\phantom{ }\times 10^{-14} $ & $ 1.4\times 10^{29}$ & $6.4\times 10^{-13}$ & $2.4\times 10^{30}$ & $2.2\times 10^{-12}$ & $8.3\times 10^{30}$ & 0.48 & 1, X \\ VZ~Cha & $ 3.8(1.70)\phantom{ }\times 10^{-15} $ & $ 1.4\times 10^{28}$ & $6.6\times 10^{-14}$ & $2.5\times 10^{29}$ & $1.4\times 10^{-13}$ & $5.3\times 10^{29}$ & 0.21 & 1, X \\ ISO-ChaI~237 & $<$$6.0(2.0)\phantom{0}\times 10^{-15} $ & $<$$2.3\times 10^{28}$ & $3.7\times 10^{-14}$ & $1.4\times 10^{29}$ & $2.5\times 10^{-13}$ & $9.4\times 10^{29}$ & 1.1 & 1, X \\ Ced 111 IRS 7 & $<$$1.8(0.6)\phantom{0}\times 10^{-15} $ & $<$$6.8\times 10^{27}$ & $1.4\times 10^{-13}$ & $5.3\times 10^{29}$ & $2.7\times 10^{-13}$ & $1.0\times 10^{30}$ & 0.45 & 1, X \\ HM~27 & $<$$3.0(1.0)\phantom{0}\times 10^{-15} $ & $<$$1.1\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ XX~Cha & $ 5.0(1.1)\phantom{0}\times 10^{-15} $ & $ 1.9\times 10^{28}$ & $1.3\times 10^{-13}$ & $4.8\times 10^{29}$ & $2.8\times 10^{-13}$ & $1.1\times 10^{30}$ & 0.34 & 1, X \\ RX~J1111.7-7620 & $ 5.1(1.2)\phantom{0}\times 10^{-15} $ & $ 1.6\times 10^{28}$ & $4.6\times 10^{-13}$ & $1.5\times 10^{30}$ & $8.7\times 10^{-13}$ & $2.8\times 10^{30}$ & 0.25 & 2, X \\ T~Cha & $ 3.2(0.10)\phantom{ }\times 10^{-14} $ & $ 1.7\times 10^{28}$ & $5.1\times 10^{-13}$ & $2.7\times 10^{29}$ & $2.0\times 10^{-12}$ & $1.1\times 10^{30}$ & 0.97 & 1, X \\ IRAS~12535-7623 & $<$$3.9(1.3)\phantom{0}\times 10^{-15} $ & $<$$1.5\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ Sz~50 & $ 2.8(0.77)\phantom{ }\times 10^{-16} $ & $ 1.1\times 10^{27}$ & ... & ... & ... & ... & ... & 1 \\ ISO-ChaII~54 & $ 5.6(0.91)\phantom{ }\times 10^{-15} $ & $ 2.1\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ DL~Cha & $<$$6.3(2.1)\phantom{0}\times 10^{-13} $ & $<$$2.4\times 10^{30}$ & ... & ... & ... & ... & ... & 1 \\ HT~Lup & $<$$2.9(0.96)\phantom{ }\times 10^{-14} $ & $<$$7.3\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ GW~Lup & $<$$2.1(0.7)\phantom{0}\times 10^{-15} $ & $<$$2.5\times 10^{27}$ & $1.8\times 10^{-13}$ & $2.1\times 10^{29}$ & $2.4\times 10^{-13}$ & $2.9\times 10^{29}$ & 0.098 & 1, X \\ Sz~73 & $ 2.1(0.26)\phantom{ }\times 10^{-14} $ & $ 2.5\times 10^{28}$ & ... & ... & ... & ... &... & 1 \\ GQ~Lup & $<$$8.1(2.7)\phantom{0}\times 10^{-15} $ & $<$$9.7\times 10^{27}$ & $3.3\times 10^{-13}$ & $3.9\times 10^{29}$ & $6.2\times 10^{-13}$ & $7.4\times 10^{29}$ & 0.47 & 1, X \\ IM~Lup & $ 9.8(1.5)\phantom{0}\times 10^{-15} $ & $ 2.3\times 10^{28}$ & $9.9\times 10^{-13}$ & $2.3\times 10^{30}$ & $1.4\times 10^{-12}$ & $3.2\times 10^{30}$ & 0.11 & 1, X \\ RU~Lup & $ 2.6(0.83)\phantom{ }\times 10^{-14} $ & $ 6.1\times 10^{28}$ & $2.7\times 10^{-13}$ & $6.4\times 10^{29}$ & $4.3\times 10^{-13}$ & $1.0\times 10^{30}$ & 0.14 & 1, X \\ RY~Lup & $<$$9.6(3.2)\phantom{0}\times 10^{-15} $ & $<$$2.6\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ EX~Lup & $<$$6.6(2.2)\phantom{0}\times 10^{-15} $ & $<$$1.8\times 10^{28}$ & $4.7\times 10^{-13}$ & $1.3\times 10^{30}$ & $5.5\times 10^{-13}$ & $1.5\times 10^{30}$ & 0.033 & 1, X \\ Sz~102 & $ 3.6(0.15)\phantom{ }\times 10^{-14} $ & $ 1.7\times 10^{29}$ & $8.6\times 10^{-15}$ & $4.1\times 10^{28}$ & $3.8\times 10^{-14}$ & $1.8\times 10^{29}$ & 0.24 & 1, X \\ \hline AS~205 & $<8.1(2.7)\phantom{0}\times 10^{-14} $ & $<$$1.4\times 10^{29}$ & ... & ... & ... & ... & ... & 1 \\ PZ99 J161411 & $ 6.2(1.8)\phantom{0}\times 10^{-15} $ & $ 1.6\times 10^{28}$ & $1.7\times 10^{-12}$ & $4.2\times 10^{30}$ & $2.5\times 10^{-12}$ & $6.2\times 10^{30}$ & 0.12 & 2, X \\ Haro 1-1 & $ 3.2(0.91)\phantom{ }\times 10^{-15} $ & $ 6.0\times 10^{27}$ & ... & ... & ... & ... & ... & 1 \\ Haro 1-4 & $ 1.1(0.16)\phantom{ }\times 10^{-14} $ & $ 2.1\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ DoAr~24E & $<$$3.6(1.2)\phantom{0}\times 10^{-14} $ & $<$$6.7\times 10^{28}$ & $1.0\times 10^{-13}$ & $1.9\times 10^{29}$ & $3.0\times 10^{-13}$ & $5.6\times 10^{29}$ & 1.2 & 1, C \\ DoAr~25 & $ 2.8(0.5)\phantom{0}\times 10^{-15} $ & $ 5.2\times 10^{27}$ & $2.3\times 10^{-13}$ & $4.3\times 10^{29}$ & $1.5\times 10^{-12}$ & $2.8\times 10^{30}$ & 1.5 & 3, X \\ SR~21 & $<3.0(1.0)\phantom{0}\times 10^{-14} $ & $<$$5.6\times 10^{28}$ & $6.9\times 10^{-14}$ & $1.3\times 10^{29}$ & $5.5\times 10^{-13}$ & $1.0\times 10^{30}$ & 1.1 & 1, C \\ IRS~51 & $ 7.9(2.8)\phantom{0}\times 10^{-15} $ & $ 1.5\times 10^{28}$ & $2.3\times 10^{-13}$ & $4.3\times 10^{29}$ & $1.8\times 10^{-12}$ & $3.4\times 10^{30}$ & 3.7 & 1, X \\ SR~9 & $ 7.2(1.9)\phantom{0}\times 10^{-15} $ & $ 1.3\times 10^{28}$ & ... & ... & ... & ... & ... & 1, X \\ V853~Oph & $ 1.6(0.16)\phantom{ }\times 10^{-14} $ & $ 3.0\times 10^{28}$ & $7.7\times 10^{-13}$ & $1.4\times 10^{30}$ & $1.7\times 10^{-12}$ & $3.1\times 10^{30}$ & 0.26 & 1, C \\ ROX~42C & $ 5.0(1.2)\phantom{0}\times 10^{-15} $ & $ 9.4\times 10^{27}$ & $1.1\times 10^{-12}$ & $2.1\times 10^{30}$ & $2.4\times 10^{-12}$ & $4.5\times 10^{30}$ & 0.39 & 1, X \\ ROXs~43A & $<$$2.2(0.73)\phantom{ }\times 10^{-14} $ & $<$$4.1\times 10^{28}$ & $2.2\times 10^{-12}$ & $4.2\times 10^{30}$ & $5.0\times 10^{-12}$ & $9.4\times 10^{30}$ & 0.39 & 1, X \\ IRS~60 & $ 1.4(0.42)\phantom{ }\times 10^{-14} $ & $ 2.6\times 10^{28}$ & $8.5\times 10^{-14}$ & $1.6\times 10^{29}$ & $1.4\times 10^{-13}$ & $2.6\times 10^{29}$ & 0.41 & 1, X \\ Haro 1-16 & $ 6.8(3.3)\phantom{0}\times 10^{-15} $ & $ 1.3\times 10^{28}$ & $2.9\times 10^{-13}$ & $5.3\times 10^{29}$ & $6.8\times 10^{-13}$ & $1.3\times 10^{30}$ & 0.35 & 1, X \\ Haro 1-17 & $ 1.6(0.4)\phantom{0}\times 10^{-15} $ & $ 3.0\times 10^{27}$ & $1.6\times 10^{-13}$ & $3.0\times 10^{29}$ & $3.1\times 10^{-13}$ & $5.8\times 10^{29}$ & 0.25 & 1, X \\ RNO~90 & $ 2.4(0.84)\phantom{ }\times 10^{-14} $ & $ 5.6\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ Wa~Oph 6 & $ 9.1(3.8)\phantom{0}\times 10^{-15} $ & $ 2.1\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ V1121~Oph & $ 1.9(0.69)\phantom{ }\times 10^{-14} $ & $ 3.6\times 10^{28}$ & ... & ... & ... & ... & ... & 1 \\ VV~Ser & $<$$3.9(1.3)\phantom{0}\times 10^{-14} $ & $<$$3.2\times 10^{29}$ & ... & ... & ... & ... & ... & 1 \\ SSTc2d~J182900.8 & $<$$4.8(1.6)\phantom{0}\times 10^{-15} $ & $<$$3.9\times 10^{28}$ & $3.6\times 10^{-14}$ & $2.9\times 10^{29}$ & $7.0\times 10^{-14}$ & $5.7\times 10^{29}$ & 0.51 & 1, X \\ SSTc2d~J182909.8 & $<$$1.3(0.44)\phantom{ }\times 10^{-14} $ & $<$$1.1\times 10^{29}$ & (undet) & (undet) & (undet) & (undet) & ... & 1, X \\ SSTc2d~J182928.2 & $ 1.0(0.11)\phantom{ }\times 10^{-13} $ & $ 8.1\times 10^{29}$ & (undet) & (undet) & (undet) & (undet) & ... & 1, X \\ EC~74 & $ 4.2(1.1)\phantom{0}\times 10^{-15} $ & $ 3.4\times 10^{28}$ & $2.8\times 10^{-13}$ & $2.2\times 10^{30}$ & $5.4\times 10^{-13}$ & $4.3\times 10^{30}$ & 2.1 & 1, X \\ EC~82 & $ 7.1(2.6)\phantom{0}\times 10^{-15} $ & $ 5.8\times 10^{28}$ & $2.4\times 10^{-15}$ & $1.9\times 10^{28}$ & $1.1\times 10^{-14}$ & $9.2\times 10^{28}$ & 1.1 & 1, C \\ EC~90 & $<$$6.0(2.0)\phantom{0}\times 10^{-14} $ & $<$$4.9\times 10^{29}$ & $2.6\times 10^{-13}$ & $2.1\times 10^{30}$ & $9.3\times 10^{-13}$ & $7.6\times 10^{30}$ & 1.9 & 1, X \\ EC~92 & $ 1.5(0.12)\phantom{ }\times 10^{-14} $ & $ 1.2\times 10^{29}$ & $1.7\times 10^{-13}$ & $1.4\times 10^{30}$ & $1.2\times 10^{-12}$ & $9.5\times 10^{30}$ & 5.6 & 1, C \\ CK~4 & $<$$3.6(1.2)\phantom{0}\times 10^{-15} $ & $<$$2.9\times 10^{28}$ & $1.2\times 10^{-14}$ & $9.6\times 10^{28}$ & $8.8\times 10^{-14}$ & $7.2\times 10^{29}$ & 1.4 & 1, C \\ LkH$\alpha$~348 & $<$$6.6(2.2)\phantom{0}\times 10^{-14} $ & $<$$5.4\times 10^{29}$ & ... & ... & ... & ... & ... & 1 \\ RX~J1842.9-3542 & $ 4.3(1.3)\phantom{0}\times 10^{-15} $ & $ 1.0\times 10^{28}$ & ... & ... & ... & ... & ... & 2 \\ RX~J1852.3-3700 & $ 7.2(0.4)\phantom{0}\times 10^{-15} $ & $ 1.7\times 10^{28}$ & ... & ... & ... & ... & ... & 2 \\ \hline \end{tabular} \tablefoot{\tablefoottext{a}{Errors are given in parentheses.} \tablefoottext{b}{In units of $10^{22}$~cm$^{-2}$.} \tablefoottext{c}{References: 1: New analysis of Spitzer c2d sample, for original analysis see \citet{lahuis07}; 2: \citet{pascucci07}; 3: archival GTO/GO observations, see Najita \& Carr (in prep.); 4: \citet{herczeg07}; 5: \mbox{\citet{boekel09}}; 6: \citet{espaillat07}; C: from {\it Chandra} archive; X: from {\it XMM-Newton} archive.} \tablefoottext{d}{Same intrinsic (unabsorbed) $L_{\rm X}$ as for T Tau N assumed (similar stellar masses). Minimum $N_{\rm H}$ based on minimum estimated visual extinction of 8~mag \citep{duchene02}.} \tablefoottext{e}{$N_{\rm H}$ and $f_{\rm X}$ only for hard (coronal) component in Two Absorber X-ray spectra \citep{guedel07b, guedel09b}.} \tablefoottext{f}{$N_{\rm H}$ adopted based on published $A_{\rm V}$ or $A_{\rm J}$ (see text for details).}} \end{table}