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Figure 5
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Estimation of the neutral gas temperature Tn [K] above the ionospheric peak height in comparison with hmF2 [0.5 km] estimates for Juliusruh and F10.7 [sfu] radio flux data. Tn slope: −102 K /decade; Pearson correlation coefficients R of Tn and hmF2 with F10.7: R = 0.76 and R = 0.94, respectively.
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