Example:
Normal dsun (2012/03/21 continuum) <DSUN_OBS>1.4817324e+11</DSUN_OBS>
Invalid dsun (2010/12/05 continuum) <DSUN_OBS>9.3606601e+26</DSUN_OBS>
Example:
Normal dsun (2012/03/21 continuum) 1.4817324e+ 11</DSUN_ OBS>
<DSUN_OBS>
Invalid dsun (2010/12/05 continuum) 9.3606601e+ 26</DSUN_ OBS>
<DSUN_OBS>