eft: 40px;">
      <ul>
        <li><span style="font-family: ms sans serif;">Modified Julian
date (referred to 1950.0) of the first record (normally Jan, 1st,
1958). Integer, bytes 1-5<br>
          </span></li>
        <li><span style="font-family: ms sans serif;">1 blank space
(column 6)<br>
          </span></li>
        <li><span style="font-family: ms sans serif;">Modified Julian
date of the last record</span><span style="font-family: ms sans serif;">.
Integer, bytes 7-11</span></li>
     