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Table 3 Statistics on the events recognized by the algorithm SPm = SPm(Ď€*) from 1/07/2009 to 20/07/2009.

From: Automated recognition of spikes in 1 Hz data recorded at the Easter Island magnetic observatory

Channel

Spikes recognized by eye

Events recognized by the algorithm

Missed spikes

Extra events

Probability of an error of the 1st kind

Probability of an error of the 2nd kind

Quality criterion K0.8

X

1119

1168

53

102

0.047

0.087

0.055

Y

1122

1224

39

141

0.035

0.115

0.051

Z

996

1007

170

181

0.171

0.180

0.172

F

1135

1146

134

145

0.118

0.127

0.120