#!/usr/bin/env perl

use strict;
use warnings;

my %data;

while (<DATA>) {
    chomp;
    next unless length;
    my ($id, $height) = (split)[0,3];
    $height = ' ' unless defined $height;
    push @{$data{$id}}, $height;
}

my $format = "'%d', '%s',\t'%s'\n";

for my $id (sort { $a <=> $b } keys %data) {
    if ($data{$id}[0] eq ' ' && $data{$id}[1] eq ' ') {
        print "$id: both height markers missing - failed\n";
    }
    else {
        printf $format, $id, @{$data{$id}};
    }
}

__DATA__
1 A A 6246 0.9706

1 B B 3237 0.9706

2 A 0

2 B B 5495 0.9775

3 A A 11254 0.9694

3 B 0
4 A
4 B