| consensus | the consensus nucleotide calculated as the nucleotide with highest count multiple nucleotides returned in a tie |
| coverage | the number of reads covering this position |
| non_ref_count | the number of reads that disagree with the reference nucleotide |
| non_ref_count_hash | a Hash with A,T,G and C as keys and the number each nucleotide appears in the pileup when that nucleotide is not |
| the reference | |
| pos | the position in the reference sequence that this pileup represents |
| read_bases | the read nucleotides covering this position |
| read_quals | the quality scores of the read nucleotides covering this position |
| ref_base | the reference sequence nucleotide |
| ref_count | the number of times the reference nucleotide appears in the read nucleotides covering this position |
| ref_name | the name of the reference sequence |
| ar1, ar2, ar3 | the allele calls from pileup |
| consensus1 | the consensus of the reads according to SAMtools method of calculation |
| consensus_quality1 | the quality score of the consensus according to SAMtools method of calculation |
| rms_mapq1 | the root mean square mapping quality at the position |
| snp_quality1 | the SNP quality at the position |