NS score
Freq
imps NS
imps EW
1440
1
12
-12
990
2
5
-5
940
14
4
-4
520
-7
7
500
3
440
-8
8
-100
-14
Mean NS score =
800
Discussion to follow.
100
50
10
-3
-90
-1
-2
-110
-120
6
-140
-200
-50
460
-6
430
420
400
170
140
210
90
0
20
Go to boards 21-24
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