CREATE TABLE table_204_185 (id DECIMAL, "location" TEXT, "town" TEXT, "output  ( mw ac ) " DECIMAL, "modules" DECIMAL, "number of arrays" DECIMAL)

what was the number of arrays of the riverhead county center project location ?
SELECT "number of arrays" FROM table_204_185 WHERE "location" = 'riverhead county center'
SELECT "number of arrays" FROM "table_204_185" WHERE "location" = 'riverhead county center'