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Table 4 Number of spectra in two clusters with respect to SEQUEST score

From: Quality Assessment of Tandem Mass Spectra by Using a Weighted K-Means

SEQUEST score

No. of spectra in cluster 1

No. of spectra in cluster 2

≥2.0

5,776

2,448

≥2.2

4,402

1,494

≥2.4

3,045

869

≥2.6

2,055

445

≥2.8

1,378

217

≥3.0

978

94

≥3.2

787

39

≥3.4

614

21

≥3.6

499

12

≥3.8

414

9

≥4.0

339

4

  1. Columns 2 and 3 lists the number of spectra in clusters 1 and 2 whose SEQUEST scores are bigger than a threshold listed in column 1, respectively