The measurements were performed on a dummy mirror with a diameter of
3.5 m, made of wood on
a support structure of the same material.
The altitude axis of the dummy was 2.5 m above the base and
its inclination could be set in a range from 
to
.
The dummy mirror integrated 13 differential pressure sensors, located
as shown in fig. 
.
All pressures were measured at 50 Hz over 82 sec.
The offsets of the 13 sensors could drift from one measurement to
another. Average data computed from these measurements
are therefore not very reliable.
In total 76 measurements were done inside the NTT building where
the dummy mirror was located just in front of the telescope.
The measurements were performed over the complete range
of zenith angles with the
dummy mirror mostly
facing the wind, with angles 
between the wind
and the azimuth of the enclosure in the range
.
The anemometer for the measurement of the reference wind
was installed on a 2-m mast at the top of the building.
Figure: Position of the dummy mirror
in the inflatable dome
56 measurements were performed in the inflatable dome.
The center of the dummy mirror was at a height of 2.5 m and was
therefore largely shielded by the 3.5-m high concrete wall.
The degree of this protection can be further controlled
by setting different elevations of the inflatable segments.
The measurements were performed over the complete range
of zenith angles with three azimuth
angles with respect to the predominant wind direction:
and 
.
The reference anemometer was located on a mast approximately 10
meters away from the inflatable dome at a height of approximately
10 meters.
All test results are listed in appendix .
We will describe here the main results of this work and those of most
general application.
Figure: Distribution of the sensors on the surface of the dummy
mirror