CREATE TABLE table_8562 ("Episode Number" FLOAT, "Air Date" TEXT, "Event 1" TEXT, "Event 2" TEXT, "Event 3" TEXT, "Event 4" TEXT)

What is the air date the had atlasphere for event 1 before episode 11?
SELECT "Air Date" FROM table_8562 WHERE "Episode Number" < '11' AND "Event 1" = 'atlasphere'
SELECT "Air Date" FROM "table_8562" WHERE "Episode Number" < '11' AND "Event 1" = 'atlasphere'