question about poll

Journey Man
total votes i currently 31 yet for each option there are 0, 6, 18, 6 which totals 30. where did the other vote go
 
Team P W L PD Pts
3 3 0 35 6
3 3 0 32 6
2 2 0 29 6
3 2 1 14 4
2 1 1 5 4
3 2 1 2 4
3 2 1 0 4
3 2 1 -7 4
2 1 1 -8 4
3 1 2 1 2
3 1 2 -3 2
3 1 2 -9 2
3 1 2 -14 2
3 1 2 -22 2
3 1 2 -25 2
3 0 3 -12 0
3 0 3 -18 0
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