.. _variables-lognormal_uncertain-lambdas-zetas:

"""""
zetas
"""""


Second parameter of the lognormal distribution (option 3)


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**Specification**

- *Alias:* lnuv_zetas 

- *Arguments:* REALLIST


**Description**


For the lognormal variables, one may specify the mean
:math:`\lambda`  ("lambda")
and standard deviation
:math:`\zeta`  ("zeta")
of the underlying normal distribution.