(a) For the ETS(m) model

${\sigma }_2^2/{\sigma }_1^2$

m

Frequencies

1.2

1.2

1.2

1.2

1.5

1.5

1.5

1.5

1.7

1.7

1.7

1.7

5

20

50

100

5

20

50

100

5

20

50

100

9323

9442

9418

9459

9374

9413

9451

9412

9407

9430

9424

9421

(b) For the TS(m) model

${\sigma }_2^2/{\sigma }_1^2$

m

Frequencies

1.2

1.2

1.2

1.2

1.5

1.5

1.5

1.5

1.7

1.7

1.7

1.7

5

20

50

100

5

20

50

100

5

20

50

100

1486

1725

1558

1555

0

0

0

0

0

0

0

0