There were 68 worcs f-c matches played on Chester Road North Ground.
CREATE TABLE "grounds" (
  "name_of_ground" text,
  "location" text,
  "first_class_span" text,
  "worcs_f_c_matches" real,
  "list_a_span" text,
  "worcs_la_matches" real
);
SELECT "worcs_f_c_matches" FROM "grounds" WHERE "name_of_ground"='Chester Road North Ground';