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Table 1 Position Count Matrix.

From: Refining motifs by improving information content scores using neighborhood profile search

j

k = 0

k = 1

k = 2

k = 3

k = 4

...

k = l

A

C 0,1

C 1,1

C 2,1

C 3,1

C 4,1

...

C l,1

T

C 0,2

C 1,2

C 2,2

C 3,2

C 4,2

...

C l,2

G

C 0,3

C 1,3

C 2,3

C 3,3

C 4,3

...

Cl,3

C

C 0,4

C 1,4

C 2,4

C 3,4

C 4,4

...

C l,4

  1. A count of nucleotides A,T,G,C at each position K = 1..l in all the sequences of the data set. K = 0 denotes the background count.