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Intensities of extreme-ultraviolet (EUV) spectral lines were measured as a function of radius o † the solar limb by two Ñights (1989 May 5 and 1991 May 7) of the Solar Extreme-ultraviolet Rocket Tele-scope and Spectrograph (SERTS) for three quiet solar regions. The line-ratio density, line-ratio tem-perature, and emission measure were determined. The relative abundances of silicon, aluminum, and chromium to iron were determined. Results agreed with standard coronal relative elemental abundances for one observation, but did not agree for the other, in which aluminum was overabundant.
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Falconer et al. (1997) studied this question.
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