use strict;
use warnings;

use Data::Dumper;

sub pretendFetch
{
    my $cannedFetch = [
       [6200249230, 2, 247.695377429616],
       [6200200581, 1, 131],
       [6200249220, 2, 394.81641303269],
       [6200249240, 2, 148.32734070292],
       [6200249269, 1, 127.84583439484],
       [6200249250, 2, 394.507287638644],
       [6200248437, 1, 234.38349845484],
       ];
    return $cannedFetch;
}

my %service_id =
   map  { $_->[1] => {
                        stop_reference => $_->[0],
                        distance => $_->[2]
                     }
        }
   sort { $b->[2] <=> $a->[2] }
   @{ pretendFetch() };

print Data::Dumper->Dump([\%service_id], [q{*service_id}]);