$vysledekvse asi obsahuje hlášení o mysql chybě ( třeba neexistující sloupec apod.)
Hlášení vypíšeš třeba takto :

$vysledekvse = mysql_query( 
"Select kraj, 
Sum(cs) as SumCS, AVG(cs) as PrumCS, 
Sum(era) as SumERA, AVG(era) as PrumERA, 
Sum(kb) as SumKB, AVG(kb) as PrumKB,
Sum(ge) as SumGE, AVG(ge) as PrumGE,
Sum(ra) as SumRA, AVG(ra) as PrumRA,
Sum(uc) as SumUC, AVG(uc) as PrumUC,
  from banky_bezbarierovost
  group by kraj
  order by kraj"
) or echo mysql_error ();