CREATE TABLE table_40629 ("City" TEXT, "Jan." TEXT, "Feb." TEXT, "Mar." TEXT, "Apr." TEXT, "May." TEXT, "Jun." TEXT, "Jul." TEXT, "Aug." TEXT, "Sep." TEXT, "Oct." TEXT, "Nov." TEXT, "Dec." TEXT)

What were the Oct. temperatures for the city that had Nov. temperatures of 51/30?
SELECT "Oct." FROM table_40629 WHERE "Nov." = '51/30'
SELECT "Oct." FROM "table_40629" WHERE "Nov." = '51/30'