$total[1][1] = 123;
$total[2][1] = 345;
$total[3][1] = 222;
$total[4][1] = 222;

rank[1][1] should be 1
rank[2][1] should be 4
rank[3][1] should be 2.5  #(3+2)/2
rank[4][1] should be 2.5  #(3+2)/2