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Table 4 First (F) and second (S) discrete derivatives (D) of the χ2 value, with their – or + sign, for non random periodic deviations of pairs shown in Table 2 (First nucleotide G and C)

From: The structure of selective dinucleotide interactions and periodicities in D melanogaster mtDNA

1° B Guanine Cytosine
2° B A T G C A T G C
SEP FD with its sign and sign of the SD
 2 1.1- 90.2- 121.1- 49.9- 7.8- 10.0+ 33.7+ 88.2-
 3 17.5+ + 9.8+ + 112.8+ + 33.2+ + 13.8+ + 1.7- - 11.6- - 80.9+ +
 4 13.0- - 10.3- - 114.4+ − 10.3- - 15.3- - 9.9+ − 19.6- - 96.5- -
 5 3.7- + 1.5+ + 0.2+ + 23.0- - 1.0- + 3.9+ + 15.0+ + 8.2- +
 6 13.8+ + 14.2+ + 137.9+ + 31.4+ + 15.7+ + 0.6- - 9.7+ − 50.0+ +
 7 9.0- - 15.7- - 139.4- - 6.7+ − 15.4- - 2.5- - 27.5- - 50.7- -
 8 5.2- + 0.5- + 2.6+ + 38.2- - 0.1- + 6.2+ + 15.0+ + 0.0 ± +
 9 20.3+ + 11.1+ + 146.1+ + 28.8+ + 18.2+ + 4.8- - 18.2+ + 44.8+ +
10 5.4- - 11.1- - 140.7- - 5.6+ − 18.6- - 2.5- + 33.9- - 43.6- -
11 15.2- - 0.2+ + 7.4- + 34.2- - 0.0 ± + 5.7+ + 26.5+ + 1.5- +
12 20.7+ + 15.0+ + 143.4+ + 44.4+ + 9.8+ + 1.7- - 1.7- - 34.8+ +
13 7.9- - 15.1- - 142.9- - 10.2- - 7.1- - 2.8- - 23.0- - 34.6- -
14 12.8- - 2.5+ + 1.0+ + 31.0- - 0.5- + 0.0 ± + 34.1+ + 0.2- +
15 21.3+ + 3.2+ + 77.4+ + 40.2+ + 16.4+ + 0.9+ + 10.6+ − 31.5+ +
16 11.4- - 5.8- - 77.3- - 10.0- - 18.3- - 0.3- - 41.9- - 31.1- -
17 9.8- + 0.0 ± + 1.6+ + 33.6- - 1.6+ + 0.4+ + 20.3+ + 1.3+ +
18 15.6+ + 6.1+ + 89.6+ + 22.4+ + 11.2+ + 3.6+ + 18.3+ − 38.1+ +
19 4.8- - 5.4- - 91.4- - 5.7+ − 13.1- - 5.1- - 37.3- - 39.2- -
20 11.2- - 0.7- + 2.3+ + 27.5- - 0.6+ + 1.5+ + 12.0+ + 0.2- +
21 23.4+ + 12.7+ + 91.1+ + 72.5+ + 13.0+ + 2.5+ + 14.2+ + 44.8+ +
22 15.4- - 12.5- - 91.6- - 44.1- - 13.4- - 3.5- - 31.2- - 45.2- -
23 7.9- + 0.2+ + 1.8- + 25.0- + 0.1+ + 2.7+ + 21.7+ + 0.5+ +
24 15.9+ + 5.7+ + 91.7+ + 8.4+ + 13.3+ + 1.9+ − 21.9+ + 40.1+ +