Table 3.

Statistics of 2-tuples of symbols in the $N=307$ GS

$S^2$	$S_{\mathit{min}}^2$	$S_{\mathit{max}}^2$	$S_{\mathit{av}}^2$	$S_{\mathit{sd}}^2$	$S^2$l	$S_{\mathit{min}}^2$	$S_{\mathit{max}}^2$	$S_{\mathit{av}}^2$	$S_{\mathit{sd}}^2$	$S^2$	$S_{\mathit{min}}^2$	$S_{\mathit{max}}^2$	$S_{\mathit{av}}^2$	$S_{\mathit{sd}}^2$	$S^2$l	$S_{\mathit{min}}^2$	$S_{\mathit{max}}^2$	$S_{\mathit{av}}^2$	$S_{\mathit{sd}}^2$
AA	1207	1469	1405.3	43.8	CA	848	1053	1028.4	27	TA	945	1205	1174.3	32.4	GA	641	836	798.5	28.5
AC	834	1040	998.8	25	CC	353	448	434.1	12	TC	588	763	693.8	44.5	GC	489	606	579	17.9
AT	936	1200	1139.2	39.6	CT	829	1067	1020.3	29.6	TT	1312	1620	1589.3	40	GT	829	1030	989.4	30.3
AG	727	887	853.6	24.4	CG	180	235	219.2	11.2	TG	1073	1322	1278.6	32	GG	457	574	534	18.3
															other	0	2525	148.9	336.3