0

6.5 ±0.6^a

6.8 ±0.7^a

6.5 ±0.6^a

6.5 ±0.6^a

1

6.4 ±1.1^a

6.5 ±0.6^a

6.3 ±0.5^a

6.5 ±0.3^a

2

6.5 ±0.9^a

6.6 ±0.8^a

6.3 ±0.9^a

6.2 ±0.3^a

3

4.4 ±1.1^ab

4.8 ±0.2^ab

4.3 ±0.2^ab

4.7 ±1.1^ab

4

3.4 ±1.1^bc

4.3 ±0.6^b

3.5 ±1.0^bc

3.3 ±1.0^bc

5

2.3 ±0.5^bc

2.8 ±0.1^bc

3.0 ±1.4^bc

2.9 ±0.9^bc

6

2.4 ±0.8^bc

2.8 ±0.4^bc

2.4 ±0.5^bc

1.8 ±0.5^c

7

1.3 ±0.5^c

1.8 ±1.5^c

1.8 ±1.0^c

1.5 ±0.7^c