Very intensive bacterial growth in afternoons was
observed in the corridor (in 2002 bacterial concentration
in afternoons was 5 times higher than in mornings), in the
canteen (in 2002 about 4 times higher in afternoons than
in mornings), in the library reading room (in 2003 about
7 times higher in afternoons than in mornings) and in
the chemical laboratory (in 2002 almost 5.5 and in 2003
– 3.5 times higher in afternoons)