while(...){
    @data= split ("\t", $line);  
                            
    $curr_identifier= $data[0];
    $markername= $data[1];
    $position1= $data[2];
    $height= $data[4];

    if ($line >0){
         $result[0] = $markername;
         $result[1] = $position1;
         $result[2] = $height;
         $result[3] = $curr_identifier;

         $data{$curr_identifier}= [@result];
     }
}