CREATE TABLE table_13302 ("Period" CLOB, "Internet Explorer" CLOB, "Firefox" CLOB, "Safari" CLOB, "Opera" CLOB, "Netscape" CLOB, "Other Mozilla" CLOB)

What percentage of users were using Safari during the period in which 2.33% were using Opera?
SELECT "Safari" FROM table_13302 WHERE "Opera" = '2.33%'
SELECT "Safari" FROM "table_13302" WHERE "Opera" = '2.33%'