what was the elevation in september 2009?
CREATE TABLE "table1_27435931_1" (
  "year" text,
  "summits" text,
  "country" text,
  "continent" text,
  "elevation_ft" real,
  "elevation_m" real
);
SELECT "elevation_m" FROM "table1_27435931_1" WHERE "year"='September 2009';