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# Column statistic OCCURRENCE DESCRIPTION NOTES NOTES WARNINGS BUGS ## OCCURRENCE
### ARB_NT/SAI/Create SAI from Sequences/Positional Variability ...
## DESCRIPTION
### Calculates the base and frequencies positional variability for each column independently. It uses the parsimony method to find the minimum number of mutations for each site. ### The result can be used by: Parsimony to weight the characters properly Neighbour joining to estimate the distances more accurately. Filter ### Result:
    '.'                          Less than 10% valid characters
    '0123456789ABCDE...'         The higher the number the more conserved the site is.
                                 Stepping 2 position rightwards in the list of given char,
                                 means half number of mutations (eg .'7' means "half number
                                 of mutations compared to '5'")
## NOTES
### Use the biggest tree you have.
## NOTES
### @@@ Compare it to consensus and max frequency.
## WARNINGS
### if you have only small trees (<100 species), forget this function.
## BUGS
### No bugs known