Fig. 2.
Median FIP ratios per year from 2001 to 2010 for Fe, Mg, and Si. The median is given only if at least 100 samples were observed in the respective bin. The colored shading indicates the 15.9th and 81.1th percentile for each year. In the lower panels the number of samples per O charge state bin and year are shown for Fe, Mg, and Si.
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