0 Months	0 Months	0 Months	0 Months	0 Months	0 Months	12 Months	12 Months	12 Months	12 Months	12 Months	12 Months
PAA only	58.7	60.5	60.3	63.4	62.6	60.4	59.9	62.6	59.7	60.7	59.6	58.4
30 kGy Gamma	55.3	53.9	55.7	54.5	53.4	53.8	52.6	54.0	53.5	54.2	55.4	54.6
55 KGy Gamma	50.6	52.0	52.3	50.4	51.0	51.5	48.5	50.5	52.6	53.5	52.4	53.4
34 kGy E-beam	55.4	55.2	55.3	53.4	55.2	55.4	55.5	54.1	55.0	53.7	55.3	57.2
15 kGy Gamma	56.0	56.0	56.8	56.0	56.8	56.0	57.7	55.5	60.1	58.2	57.2	56.8
15 kGy E-beam	56.5	56.2	58.9	58.7	56.2	61.2	57.1	56.0	56.5	57.4	56.0	56.8
(15+15) kGy E-beam	56.5	54.5	57.1	55.3	55.8	55.7	54.2	54.8	53.9	53.6	52.8	54.8