use warnings;
use strict;

my $array_ref = [
    [ '0.93', 'a1', 'b1' ],
    [ '0.89', 'a2', 'b2' ],
    [ '0.88', 'a3', 'b3' ],
    [ '0.87', 'a4', 'b4' ],
    [ '0.86', 'a5', 'b5' ]
];

for my $row (@$array_ref)
{
  for my $element (@$row)
  {
     print $element, "\n"; # using say, or setting $\ locally would work as well
  }
}