1.6 - 0.5

(a)  

2.6 - 1.3

(a)  

5.3 - 0.2

(a)  

17.6 - 6.2

(a)  

12.7 - 5.4

(a)  

13.8 - 12.5

(a)  

5.4 - 3.6

(a)  

4.2 - 2.7

(a)  

7.6 -3.8

(a)