CREATE TABLE table_23026 ("No." FLOAT, "Country" CLOB, "Local title" CLOB, "Format" CLOB, "Start Date" CLOB, "End Date" CLOB, "Episodes" CLOB, "Premiere/Air Dates" CLOB)

When did the season with 1 team format premiere?
SELECT "Premiere/Air Dates" FROM table_23026 WHERE "Format" = '1 Team'
SELECT "Premiere/Air Dates" FROM "table_23026" WHERE "Format" = '1 Team'