Table 3: Line widths measured in data set 1 (coronal hole) at two positions above the solar limb, and the associated ion temperatures.
    57 $^{\prime \prime }$ ( $n_{\rm e}=4.8 \times 10^7~{\rm cm}^{-3}, \xi=15~{\rm km} ~ {\rm s}^{-1}$) 102 $^{\prime \prime }$ ( $n_{\rm e}=2.7 \times 10^7~{\rm cm}^{-3}, \xi=17~{\rm km} ~ {\rm s}^{-1}$)
Linea q/mb Observed widthc Widthd Tie Observed widthc Widthd Tie
    (Å) (Å) (106 K) (Å) (Å) (106 K)
Fe X 1028.02 0.16 0.1111 $\pm$ 0.004 0.1102 $\pm$ 0.004 5.96 $\pm$ 0.70 0.1161 $\pm$ 0.004 0.1184 $\pm$ 0.004 6.76 $\pm$ 0.80
Fe X 1463.50 0.16 0.1434 $\pm$ 0.004 0.1435 $\pm$ 0.013 4.87 $\pm$ 1.15 ... ... ...
Fe XI 1467.08 0.18 0.1310 $\pm$ 0.004 0.1272 $\pm$ 0.007 3.64 $\pm$ 0.62 0.1376 $\pm$ 0.004 0.1318 $\pm$ 0.011 3.73 $\pm$ 1.00
Ar VIII 700.26$^\ast$ 0.18 0.1158 $\pm$ 0.004 0.1351 $\pm$ 0.002 3.35 $\pm$ 0.36 0.1222 $\pm$ 0.005 0.1411 $\pm$ 0.004 3.53 $\pm$ 0.58
Ar VIII 713.82$^\ast$ 0.18 0.1291 $\pm$ 0.004 ... 2.88 $\pm$ 0.34 ... ... ...
Fe XII 1242.00 0.20 0.1035 $\pm$ 0.004 0.1039 $\pm$ 0.004 3.34 $\pm$ 0.50 0.1132 $\pm$ 0.004 0.1128 $\pm$ 0.004 3.83 $\pm$ 0.59
Fe XII 1349.36 0.20 0.1071 $\pm$ 0.004 0.1078 $\pm$ 0.004 2.98 $\pm$ 0.45 0.1176 $\pm$ 0.004 0.1177 $\pm$ 0.004 3.46 $\pm$ 0.55
Ca X 574.00$^\ast$ 0.22 0.1111 $\pm$ 0.004 0.1118 $\pm$ 0.002 3.43 $\pm$ 0.42 0.1137 $\pm$ 0.004 0.1185 $\pm$ 0.002 3.76 $\pm$ 0.49
Si VIII 1445.75 0.25 0.1605 $\pm$ 0.004 ... 3.24 $\pm$ 0.27 0.1674 $\pm$ 0.004 ... 3.44 $\pm$ 0.31
S X 1196.20 0.28 0.1250 $\pm$ 0.004 ... 3.23 $\pm$ 0.35 0.1266 $\pm$ 0.004 ... 3.19 $\pm$ 0.39
N V 1238.81 0.29 0.1532 $\pm$ 0.004 0.1709 $\pm$ 0.004 2.60 $\pm$ 0.18 0.1448 $\pm$ 0.004 0.1804 $\pm$ 0.004 2.86 $\pm$ 0.21
O VI 1031.93 0.31 0.1426 $\pm$ 0.004 ... 2.98 $\pm$ 0.24 0.1406 $\pm$ 0.004 ... 2.82 $\pm$ 0.26
Mg IX 706.05$^\ast$ 0.33 0.1669 $\pm$ 0.004 0.1669 $\pm$ 0.002 3.22 $\pm$ 0.25 0.1775 $\pm$ 0.004 0.1795 $\pm$ 0.002 3.67 $\pm$ 0.29
Na IX 681.72$^\ast$ 0.35 0.1561 $\pm$ 0.004 0.1587 $\pm$ 0.002 2.94 $\pm$ 0.24 0.1535 $\pm$ 0.004 0.1637 $\pm$ 0.002 3.06 $\pm$ 0.27
Si XI 580.91$^\ast$ 0.36 0.1269 $\pm$ 0.004 0.1271 $\pm$ 0.002 3.13 $\pm$ 0.32 0.1251 $\pm$ 0.004 0.1204 $\pm$ 0.002 2.66 $\pm$ 0.34
Si XI 604.15 $^{\ast, {f}}$ 0.36 0.1229 $\pm$ 0.005 ... 2.66 $\pm$ 0.31 0.1313 $\pm$ 0.005 ... 2.97 $\pm$ 0.40
Mg X 624.94$^\ast$ 0.37 0.1477 $\pm$ 0.004 0.1485 $\pm$ 0.002 3.26 $\pm$ 0.28 0.1513 $\pm$ 0.004 0.1524 $\pm$ 0.002 3.35 $\pm$ 0.31
a Wavelengths in angstroms are taken from Feldman et al. (1997). Lines marked with an asterisk are observed in second order.
b Ion charge-to-mass ratio.
c Half-width at 1/$\sqrt{e}$ (Gaussian). Instrumental width is removed, but spectra are not corrected from the instrumental stray light. For lines seen in second order, the widths are twice as large as what would be measured in first order (see Sect. 5.2).
d Half-width at 1/$\sqrt{e}$ when spectra are corrected from the stray light, with the instrumental width removed.
e Ion temperature deduced from the corrected line width, with the non-thermal velocity removed. When no correction was necessary or possible, the observed width was used.
f This line is blended with an Fe VII line, as given by Ekberg & Feldman (2003). See comments in Sect. 3.1.

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