... determinations

In the text we use rounded values sufficient to identify the lines.

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... broadening

With an exception in Eq. (1).

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... reduction

All the raw data of SUMER are in the public domain and can be obtained from http://www.linmpi.mpg.de/english/projekte/sumer/FILE/SumerEntryPage.html

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... continuum

The relative contribution of the H  I Lyman continuum in the second order is less than 5% (cf. Wilhelm et al. 2002).

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