Fig. 6From: Relationship between Na layer and CNA variations observed at Syowa, Antarctica–d Scatterplots (with zero lag) of the Na and CNA deviations at 97–103-km heights. Red points indicate data which have significant differences (\(> 98\%\) probability) in the median values between the quiet and active days. e–h The correlation coefficients (CC) between the Na and CNA deviations (derived from the cross-correlation analysis) at 97–103-km heightsBack to article page