Nothing
l.variance = function(V) {
# Calculate approximate variance of Blair and Lacy's (2000) l (L2)
# V should be a frequency vector
# From Blair and Lacy 2000: 274
lsquared = concentration(V,2)^2
l.var = lsquared.variance(V)/(4 * lsquared)
return(l.var)
}
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