The results of temperature measurements for the closed
steady state are shown in Fig. 2. The figure presents the
readings of thermocouples placed in air (filled circles) and
inside the walls (unfilled circles). The thermocouples are
shown at their positions, as in Fig. 1b. Near each thermo-
couple, its reading is listed. In order to eliminate the effect of
a changing temperature in the room, the differences between
the local temperatures and the ambient one are shown in the
figures instead of the absolute temperature values.