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userout file
 
The userout option specifies a tabbed text output file with fields specified by the ‑userfields option. For example, the following will give the same output as ‑blast6out hits.m8:

 -userout hits.m8
   -userfields query+target+id+alnlen+mism+opens+qlo+qhi+tlo+thi+evalue+bits

Field   Description
query   Query label.
target   Target label.
evalue   E-value calculated using Karlin-Altschul statistics.
id   Percent identity.
pctpv   Percent positives (substitution score > 0).
pctgaps   Percent gaps.
pairs   Number of letter pairs.
gaps   Number of gapped columns.
qlo   0-based start in query. Coordinates are relative to the start of the sequence as it appears in the input file.
qhi   0-based end in query. Coordinates are relative to the start of the sequence as it appears in the input file.
tlo   0-based start in target. Coordinates are relative to the start of the sequence as it appears in the input file.
thi   0-based end in target. Coordinates are relative to the start of the sequence as it appears in the input file.
pv   Number of positives (substitution score > 0).
ql   Query sequence length.
tl   Target sequence length.
qs   Query segment length.
ts   Target segment length.
alnlen   Alignment length (columns).
opens   Number of gap open columns.
exts   Number of gap extension columns.
raw   Raw score.
bits   Bit score calculated using Karlin-Altschul statistics.
aln   Alignment columns specified as string with M=match, D=delete (gap in query) and I=insert (gap in target).
caln   Compressed alignment.
qstrand   Query strand (+ or -). Nucleotide sequences only,
tstrand   Target strand (+ or -). Nucleotide sequences only. This is currently always +, so reverse strand matches have tstrand + and qstrand -.
qrow   Query row. Letters of the query segment with gaps inserted as needed.
trow   Target row. Letters of the target segment with gaps inserted as needed.
qframe   Query frame (-3 to +3).
tframe   Target frame (-3 to +3).
mism   Number of mismatch columns.
ids   Number of columns containing identical letters.
qcov   Query coverage, fraction of query sequence that is aligned  (0.0 to 1.0).
tcov   Target coverage, fraction of query sequence that is aligned  (0.0 to 1.0).