Table 2.

Estimates of the within- and between-flyway rates and their ratio under the 4-TRM for each gene segment. Under the 4-TRM the ratio is equal to the within flyway rate estimate over the between flyway rate estimate. Under the 4-FRM and GRM the ratio is equal to the mean within flyway rate over the mean between flyway rate. Mean rates are calculated assuming four flyways

	4-TRM			4-FRM			GRM
Gene	within	between	ratio	within	between	ratio	within	between	ratio
PB2	7.7	1.75	4.4	8.37	1.67	5.01	6.06	1.4	4.33
PB1	7.96	1.75	4.55	8.48	1.69	5.02	14.75	1.75	8.43
PA	8.92	1.92	4.64	8.8	1.92	4.58	6.85	1.5	4.57
NP	8.56	1.7	5.03	8.76	1.64	5.34	7.18	1.45	4.95
MP	11.52	2.68	4.3	11.55	2.67	4.33	9.85	2.09	4.71