CREATE TABLE table_204_277 (id NUMBER, "region" CLOB, "country" CLOB, "location" CLOB, "size  ( m ) " CLOB, "payload  ( metric tonnes ) " CLOB, "degrees of freedom" NUMBER, "x horiz disp  ( mm ) " NUMBER, "y horiz disp  ( mm ) " NUMBER, "z vert disp  ( mm ) " NUMBER, "x horiz vel  ( mm/s ) " NUMBER, "y horiz vel  ( mm/s ) " NUMBER, "z vert vel  ( mm/s ) " NUMBER, "x horiz accel  ( m/s2 ) " NUMBER, "y horiz accel  ( m/s2 ) " NUMBER, "z vert accel  ( m/s2 ) " NUMBER, "max freq  ( hz ) " CLOB, "details checked" CLOB)

which is the least region charted on this chart
SELECT "region" FROM table_204_277 GROUP BY "region" ORDER BY COUNT(*) LIMIT 1
SELECT "region" FROM "table_204_277" GROUP BY "region" ORDER BY COUNT(*) FETCH FIRST 1 ROWS ONLY