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Earth, Planets and Space
Fig. 9 | Earth, Planets and Space

Fig. 9

From: Comparison of SuperDARN peak electron density estimates based on elevation angle measurements to ionosonde and incoherent scatter radar measurements

Fig. 9

Contour plots of the F region peak electron density \( N_{\text{m}} F2\text{(}12\text{)} \) inferred from Rankin Inlet (RKN) radar measurements (beams 4–6) at 12 MHz \( N_{\text{m}} F2\text{(}10\text{)} \) inferred from RKN measurements at 10 MHz. a, b Are for nighttime observations in winter and spring, respectively. c, d Are for daytime observations in winter and spring, respectively. All records in 2008–2017 have been considered. The nighttime and daytime sectors were selected as \( 0 \pm 3\,\;\text{LT} \) and \( 12 \pm 3\;\text{LT} \), respectively. The total number of available points n is shown at the upper-right corner of each panel. In all panels, the solid lines are the lines of the best linear fit

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