  Among different models for determining the habitable zone (HZ) around a star,
a Latitudinal Energy Balance Model (LEBM) is very beneficial due to its
parametricity which keeps a good balance between complexity and simulation
time. This flexibility makes the LEBM an excellent tool to assess the impact of
some key physical parameters on the temperature and the habitability of a
planet. Among different physical parameters, some of them, up until now, cannot
be determined by any method such as the planet's spin obliquity, diurnal
period, ocean-land ratio, and pressure level. Here we apply this model to study
the effect of these unknown parameters on the habitability of three exoplanets
located in the inner, outer, and middle of their optimistic HZ. Among the
examined parameters, the impact of pressure is more straightforward. It has a
nearly direct relation with temperature and also with the habitability in the
case of a cold planet. The effect of other parameters is discussed with
details. To quantify the impact of all these unknown parameters we utilize a
statistical interface which provides us with the conditional probability on
habitability status of each planet.
