for my @PAR1_info (@PAR1) {
     
        $pi = split('\t', $PAR1_info[0]);
        $pi_sum = $pi_sum + $pi;
    
        $L = split('\t', $PAR1_info[1]);
        $L_sum = $L_sum + $L;
    
        $differences = split('\t', $PAR1_info[2]);
        $differences_sum = $differences_sum + $differences; 
    
        $coverage = split('\t', $PAR1_info[3]);
        $coverage_sum = $coverage_sum + $coverage;
    

        my $PAR1_diversity = (($pi_sum/$L_sum)/($differences_sum/$coverage_sum));
}