CREATE TABLE table_72855 ("Episode" CLOB, "Broadcast date" CLOB, "Run time" CLOB, "Viewers  ( in millions ) " CLOB, "Archive" CLOB)

How many viewers were there on 1august1964?
SELECT "Viewers (in millions)" FROM table_72855 WHERE "Broadcast date" = '1August1964'
SELECT "Viewers (in millions)" FROM "table_72855" WHERE "Broadcast date" = '1August1964'