,Intra,Extra,Intra reduction,Extra reduction
E,9770 ,2757 ,7156 ,3306 
C,5151 ,2450 ,4911 ,3085 
N,3679 ,2511 ,2640 ,2438 
SW,3230 ,1083 ,1993 ,1274 
NE,1177 ,1432 ,806 ,1371 
NW,782 ,1093 ,820 ,1258 
S,821 ,533 ,419 ,400