CREATE TABLE table_13352 ("Parameter" CLOB, "Symbol" CLOB, "Best fit  ( WMAP only ) " CLOB, "Best fit  ( WMAP ,  extra parameter ) " CLOB, "Best fit  ( all data ) " CLOB)

What is the parameter when the best fit (WMAP only) is .9 .1, and symbol is a?
SELECT "Parameter" FROM table_13352 WHERE "Best fit (WMAP only)" = '.9 ± .1' AND "Symbol" = 'a'
SELECT "Parameter" FROM "table_13352" WHERE "Best fit (WMAP only)" = '.9 ± .1' AND "Symbol" = 'a'