GROUP 1

GROUP 2

GROUP 3

GROUP 4

t/a1

0.7 (±0.05)

0.77 (±0.05)

1.17 (±0.05)

1.39 (±0.14)

a1/a2

0.46 (±0.03)

0.5 (±0.03)

0.53 (±0.05)

0.47 (±0.04)

a2/a3

1.27 (±0.12)

1.16 (±0.1)

0.85 (±0.05)

0.79 (±0.07)