18 field SOAPsnp output for Annovar

[ngadewal]

Dear members,

I want to use Annovar to annotate SOAPsnp output. The standard output of SOAPsnp gives 17 fields. But convert2annovar.pl (program of annovar)requires 18 fields as input from SOAPsnp.

Please visit the link for the 18 field format (last field value required)

http://www.openbioinformatics.org/annovar/annovar_input.html#soapsnp

Please let me know what is the data in 18th field and how get 18 field data while generating the output of SOAPsnp by using any optional parameters.
I have a paired sequence reads and used below command

soapsnp -i <Alignment.soap.sort.chrN> -d <chrN.fasta> -o <chrN.consensus> -r 0.00005 –e 0.0001 -t -u -L <Maximum Read Length> -M <chrN.mat>

Please give detailed explanation.
I appreciate the help.

Thank & regards,
Nikhil Gadewal