Table 6: Abundance enhancement factors (with respect to photospheric composition) for the low FIP elements in the selected segments. $\beta $ is the FIP bias deduced from the observed Mg VI (349.2 Å)/Ne VI (562.8 Å) line intensity ratio as in Young & Mason (1997). The result for Ar in segment 2(1) is not reported because the estimated error is very large.
Region Segment Enhancement factor $\beta $
    Al Ca Mg Fe Si O Ar  
Extended brightening 1(0) $\rm0.5_{-0.2}^{+0.2}$ $\rm 1.9_{-1.5}^{+0.9}$ $\rm 1.7_{-0.3}^{+0.3}$ $\rm 1.2_{-0.5}^{+0.6}$ $\rm 1.5_{-0.3}^{+0.2}$ $\rm0.6_{-0.2}^{+0.2}$ $\rm 2.1_{-0.9}^{+0.9}$ 3.6
  2(1) $\rm 1.1_{-0.5}^{+0.6}$ $\rm 1.7_{-1.0}^{+1.9}$ $\rm 1.9_{-0.3}^{+0.3}$ $\rm 2.2_{-0.7}^{+0.7}$ $\rm 2.3_{-0.5}^{+0.5}$ $\rm0.6_{-0.1}^{+0.2}$   3.5
Narrow brightening 3(4) $\rm 1.1_{-0.4}^{+0.4}$ $\rm 1.7_{-1.1}^{+1.5}$ $\rm 1.7_{-0.3}^{+0.3}$ $\rm 2.0_{-0.6}^{+0.8}$ $\rm 1.7_{-0.5}^{+0.4}$ $\rm0.9_{-0.1}^{+0.2}$ $\rm 1.8_{-0.8}^{+1.2}$ 3.5
  5(7U) $\rm 1.0_{-0.4}^{+0.5}$ $\rm 3.7_{-1.1}^{+1.9}$ $\rm 1.5_{-0.3}^{+0.3}$ $\rm0.9_{-0.3}^{+0.3}$ $\rm 1.0_{-0.2}^{+0.2}$ $\rm0.9_{-0.1}^{+0.2}$ $\rm 1.5_{-0.7}^{+1.0}$ 3.2
  7(8U) $\rm0.8_{-0.5}^{+0.4}$ $\rm 4.8_{-1.8}^{+2.8}$ $\rm 1.7_{-0.3}^{+0.3}$ $\rm 1.4_{-0.3}^{+0.5}$ $\rm 1.6_{-0.3}^{+0.4}$ $\rm 1.0_{-0.2}^{+0.2}$ $\rm0.5_{-0.3}^{+0.6}$ 3.2
  8(9) $\rm0.9_{-0.6}^{+0.5}$ $\rm 2.1_{-0.6}^{+0.9}$ $\rm 1.7_{-0.3}^{+0.3}$ $\rm0.7_{-0.2}^{+0.3}$ $\rm 1.2_{-0.3}^{+0.2}$ $\rm 1.0_{-0.2}^{+0.2}$ $\rm 1.3_{-0.6}^{+0.8}$ 3.1
Dark regions 4(7L) $\rm 1.1_{-0.8}^{+0.8}$ $\rm 2.6_{-1.0}^{+1.4}$ $\rm0.8_{-0.3}^{+0.3}$ $\rm0.9_{-0.4}^{+0.4}$ $\rm 1.3_{-0.3}^{+0.3}$ $\rm0.7_{-0.1}^{+0.2}$ $\rm 2.3_{-1.3}^{+0.8}$ 1.5
  6(8L) $\rm0.6_{-0.5}^{+0.4}$ $\rm 2.3_{-1.7}^{+1.4}$ $\rm 1.2_{-0.3}^{+0.3}$ $\rm0.6_{-0.2}^{+0.2}$ $\rm 1.1_{-0.2}^{+0.2}$ $\rm0.9_{-0.2}^{+0.2}$ $\rm 2.1_{-1.7}^{+1.2}$ 2.6


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