First Second Third Fourth
5.9 6.9 4.9 5.3
6.8 9.0 5.5 5.6
6.4 6.6 4.6 5.5
7.0 8.1 4.5 5.1
6.6 9.3 NA  6.2        
7.7 9.2 NA  5.8        
7.2 8.6 NA  5.8        
6.9 NA  NA  NA                	    
6.2 NA  NA  NA