CREATE TABLE table_18217753_1 (original_air_date VARCHAR, us_viewers__millions_ VARCHAR)

How many original air dates totaled 26.06 million viewers?
SELECT COUNT(original_air_date) FROM table_18217753_1 WHERE us_viewers__millions_ = "26.06"
SELECT COUNT("original_air_date") FROM "table_18217753_1" WHERE "26.06" = "us_viewers__millions_"