ISO-8859-1 Encoding with no XML declaration

Using the following ISO-8859-1 encoded XML file which does not have an XML declaration at the top, note that several of the characters are above 7F and therefore can be recognized as ISO encodings versus UTF-8 encodings.

<DATA>
<character>(30) 0 The number zero</character>
<character>(41) A Capital letter A</character>
<character>(A5) ¥ YEN SIGN</character>
<character>(BF) ¿ INVERTED QUESTION MARK</character>
<character>(DF) ß LATIN SMALL LETTER SHARP S</character>
<character>(E6) æ LATIN SMALL LIGATURE AE</character>
<character>(FF) ÿ LATIN SMALL LETTER Y WITH DIAERESIS</character>
</DATA>