arithmetic from csh variable passed to awk

Shell Programming and Scripting
1

I have the following code in a csh script

I want to pass the value of the variable sigmasq to the awk script so that I can divide $0 by the value of sigmasq

          grep "Rms Value" $f.log                       \
            | awk  '{   sub(/[^:]*:[0-9]*\.[ \t]*/,x);  \
                        print $0/sigmasq                \
                    }' > $f.csmis
2

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3 
awk -v sigmasq=123