From: Occurrence of F region echoes for the polar cap SuperDARN radars
Density bin | Spring slope/intercept | Summer slope/intercept | Fall slope/intercept | Winter slope/intercept |
---|---|---|---|---|
\( N_{\text{e}} < 2 \times 10^{11} {\text{m}}^{ - 3} \) | 8.7/16 | 30.6/14 | 21.3/17 | − 10.3/39 |
\( 2 \le N_{\text{e}} < 3 \times 10^{11} {\text{m}}^{ - 3} \) | 27.5/27 | 38.4/18 | 29.0/24 | − 4.6/49 |
\( 3 \le N_{\text{e}} < 4 \times 10^{11} {\text{m}}^{ - 3} \) | 20.3/36 | 29.2/31 | 24.9/33 | 1.7/53 |
\( N_{\text{e}} > 4 \times 10^{11} {\text{m}}^{ - 3} \) | 17.2/40 | 17.2/40 | 20.8/37 | 9.5/48 |