MADRID, 19 novembre (Reuters) - Spain announced the following results at Tuesday's Treasury bill auction. (Amounts bid, allocated in millions of euros) SUE YIELD PREVIOUS PRICE PREVIOUS BID ALLOCATED 3-month -0.602 -0.581 100.141 100.147 2,431 991 9-month -0.489 -0.486 100.363 100.391 5,404 2,004 The bid-to-cover ratio on the 3-month bill was 2.45 versus 4.2 at the last auction. The bid-to-cover ratio on the 9-month bill was 2.7 versus 3.2 at the last auction. For further information, click on and. (Reporting by Joao Manuel Mauricio, editing by Jose Elías Rodríguez)