Table 3
Correlation coffefficient (r) of soft X-ray flare index (FISXR) with sunspot number (SN), sunspot area (SA), 10.7 cm solar radio flux (F10.7), and Hα flare index (FIHα).
| Cycle no. | N | r (SN/FISXR) | r (SA/FISXR) | r (F10.7 /FISXR) | r (FIHα/FISXR) |
|
|
|||||
| Cycle 21 | 138 | 0.60 | 0.73 | 0.67 | 0.83 |
| Cycle 22 | 130 | 0.76 | 0.84 | 0.82 | 0.90 |
| Cycle 23 | 169 | 0.58 | 0.74 | 0.64 | 0.81 |
Notes. Correlation is studied between CR averaged values of the corresponding parameters. N denotes number of data points for each cycle. For each case the p-value is <0.0001, which together with r, indicates a very high correlations between FISXR and other solar activity parameters.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.