Table 4
SMFR statistics associated with storms and substorms based on a more rigorous criterion
B
z
type
Number of events
Storm
Substorm
N
0
2 (4.3%)
NS
2 (1.9%)
35 (32.7%)
SN
0
25 (28.7%)
S
0
26 (37.7%)
Total
2 (0.6%)
88 (28.5%)