Table 3. CpG usage of RNA viruses and their respective hosts.

	Typea	Viral Number	Mean CpGO/E	Mean CpGO/E _CDS_12	Mean CpGO/E _CDS_23	Mean CpGO/E _CDS_31
Hosts	B	18	1.00±0.167	0.62±0.288	0.93±0.197	1.43±0.409
	F	12	0.88±0.126	0.62±0.072	0.79±0.149	1.24±0.209
	I	14	1.02±0.090	0.60±0.074	1.07±0.163	1.41±0.179
	P	9	0.69±0.206	0.47±0.031	0.64±0.223	0.95±0.372
	V	17	0.47±0.042	0.46±0.176	0.37±0.048	0.58±0.079
+ssRNA viruses	B	9	1.10±0.056	1.00±0.104	0.94±0.118	1.47±0.143
	F	21	0.74±0.186	0.61±0.272	0.63±0.230	0.94±0.409
	I	40	0.87±0.154	0.72±0.162	0.76±0.286	1.10±0.397
	P	432	0.75±1.83	0.54±0.165	0.68±0.232	1.03±0.314
	V	223	0.57±0.183	0.44±0.176	0.46±0.191	0.78±0.339
−ssRNA viruses	I	1	0.57	0.47	0.55	0.71
	P	24	0.35±0.108	0.18±0.086	0.33±0.124	0.49±0.159
	V	126	0.38±0.120	0.28±0.140	0.33±0.122	0.49±0.186
dsRNA viruses	B	3	0.97±0.106	0.58±0.149	0.90±0.265	1.51±0.260
	F	50	0.98±0.174	0.70±0.177	0.80±0.224	1.46±0.420
	I	14	0.91±0.193	0.64±0.257	0.90±0.281	1.21±0.210
	P	26	0.88±0.158	0.67±0.208	0.63±0.237	1.31±0.303
	V	37	0.88±0.168	0.65±0.217	0.88±0.332	1.13±0.250
RT viruses	P	50	0.50±0.126	0.32±0.136	0.38±0.114	0.73±0.236
	V	64	0.52±0.137	0.42±0.124	0.46±0.191	0.59±0.218

^aB, indicates bacteria or bacterium-infecting RNA viruses; F, indicates fungi or fungus-infecting RNA viruses; I, indicates invertebrates or invertebrate-infecting RNA viruses; P, indicates plants or plant-infecting RNA viruses; V, indicates vertebrates or vertebrate-infecting RNA viruses.