Table 2. Standard deviation of the cluster nucleotide composition. Standard deviations refer to the average values (% of the ATCG, 8^th–11^th columns), estimated according to the proposed method with n = 4 over the first 10MBases of the 24 chromosome sequences. Standard deviationscan be appreciated in the middle panel plots of Figs. 3,4,5,6,7,8 for each chromosome. In Tables S1–S6 of Supplementary Information, further values over different chromosome sets and with different values of n are reported.

CHR	σC [A]	σC [C]	σC [G]	σC [T]
1	11.01	10.81	10.06	9.68
2	14.19	12.90	12.43	14.30
3	10.05	9.43	8.29	8.52
4	16.56	12.91	13.87	17.79
5	19.75	14.32	12.76	16.69
6	9.07	6.33	7.42	8.71
7	8.58	8.32	11.14	10.21
8	4.89	3.88	4.33	4.91
9	6.49	4.97	4.36	5.23
10	10.84	9.04	7.52	9.38
11	9.12	8.83	11.69	10.87
12	17.09	14.86	14.13	15.63
13	17.12	12.01	13.78	18.11
14	19.53	13.06	13.43	19.26
15	16.55	14.08	12.54	16.61
16	16.31	15.60	15.77	15.69
17	5.06	5.17	4.95	5.67
18	20.02	13.98	14.10	18.47
19	17.90	14.88	13.99	17.10
20	17.31	13.86	14.33	18.70
21	10.84	7.69	8.50	10.81
22	8.40	5.81	5.53	8.48
X	18.06	14.09	14.87	19.06
Y	6.19	6.66	7.08	7.47