 : :: |Here is the cut off Z-scores in 2011 ::: Colombo district (Sinhalese - 76%) - 1.9770 ::: Matara district (more than 90% are Sinhalese) - 1.9689 ::: Galle district (more than 90%) - 1.9470 ::: Hambantota district (more than 90%)  - 1.9327 :::. :::. ::: Mullaitivu ( majority are tamils ) - 0.5950    