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Table 5 Results of application of the algorithms @@, @@, @@ and @@ to the records obtained from 1 to 31 August 2009 and their assessment by experts.

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

2122

2057

79

14

0.0372

0.0068

0.031

Y

2143

2150

23

30

0.0107

0.0140

0.011

Z

1786

1780

104

98

0.0582

0.0551

0.058

F

1963

1996

39

72

0.0199

0.0361

0.023