phi verteilung = phi(x/µ;sigma;n) = ϕ(x/µ;σd;n) = e^(-n*(ln(x/µ)/ln(σd))²)
phi verteilung = phi(x/µ;sigma;n) = ϕ(x/µ;σ;n) = e^(-n*(ln(x/µ)/ln(σ))²)