Replace "my @fields" onwards with this code:
my (undef,undef,@fields) = split(/\,/,shift @rows);
my %stats = ();
for my $r(@rows){
my ($pxname,$svname,@values) = split /\,/,$r;
for my $f(@fields){
$stats{$pxname}{$svname}{$f} = shift @values;
}
}
Note: This modifies both @rows, and @values - I'm assuming you don't need these after the info is extracted.
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