Here is how to chop it up into a data structure to print as you desire:

use Data::Dumper;

undef $/;
my $data = <DATA>;
my @data = split 'HOUR\*', $data;
shift @data;
my (%struct, @order);
for my $bit (@data) {
    my ($model) = $bit =~ m/MODEL\*([^:]+)/;
    push @order, $model;
    my ($hour)  = $bit =~ m/^(\d\d)/;
    my @u       = $bit =~ m/^U:([^\n]+)/mg;
    my @l       = $bit =~ m/^L:([^\n]+)/mg;
    my @d       = $bit =~ m/^D:([^\n]+)/mg;
    $struct{$model} = { hour => $hour, u => \@u, l => \@l, d => \@d };
}
print Dumper \%struct;

for my $model( @order ) {
    print "$model\n";
    print 'U', "\t" x ( 1 + $struct{$model}->{hour} ), $_, "\n" for @{
+$struct{$model}->{u}};
    print 'L', "\t" x ( 1 + $struct{$model}->{hour} ), $_, "\n" for @{
+$struct{$model}->{l}};
    print 'D', "\t" x ( 1 + $struct{$model}->{hour} ), $_, "\n" for @{
+$struct{$model}->{d}};
}
__DATA__
HOUR*00:MODEL*123.12.100.11:
U:1:23
L:1:2
D:1:-

HOUR*00:MODEL*123.12.100.12:
U:1:86
L:1:-
D:1:24

HOUR*01:MODEL*11MT-AS5300:
U:8:-
L:8:10
D:8:32

U:9:2
L:9:5
D:9:-

HOUR*02:MODEL*132.21.001.21:
U:1:6
L:1:8
D:1:2
[download]

cheers

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print

Thanks tachyon,
Thats exactly what I was looking for, I'll have to change some stuff, but this gives me a good foundation to start with.

Thanks again

Glad to help. You could use a counter to log the max hours in the munging loop (makes it easy to know the column width) and gild the lily using Spreadsheet::WriteExcel to make it really snazzy if you want to impress the PHB.

cheers

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print

my $spaces = $hour * 8;
my $padding = ' ' x $spaces;
[download]

no, actually that was a typo
It should look like this:

MODEL              HOUR    HOUR    HOUR
                    0       1      2
            
123.12.100.11
 U                 1:23    
 L                 1:2
 D                 1:-

123.12.100.12    
 U                 1:86
 L                 1:-
 D                 1:24

11MT-AS5300
 U                         8:-
 U                         9:2

 L                         8:10
 L                         9:5

 D                         8:32
 D                         9:-


132.21.001.21
 U                                1:6
 L                                1:8
 D                                1:2
[download]

I think you should tell us what you are trying to accomplish rather than having us guess from examples.

Are there sometimes more or less than three hours? Can there be many sets of U/L/D's or just one or two? Can one model have entries in several hour columns?