  Extensive Air Showers (EAS) arrival direction distribution is studied by
means of a 4-detector installation in Telavi (TEL array), which is a node of
GELATICA net in Georgia. The description of EAS arrival zenith angle
distribution within the spheric layer model of the atmosphere and exponential
absorption of showers with the air path is used. It is shown that the variation
of zenith angles upper cutoff boundary allows a stable estimation of showers
absorption path.
