site          sitenum  datetime             Group           lat           lon          
site229       229      2014-12-24T03:30:00  Silverfish      -77.5815857   166.1787842  
site229       229      2014-12-24T03:30:00  LargeFish       -77.58238496  166.1799839  
site229       229      2014-12-24T03:30:00  Krill           -77.5827187   166.1762101  
site229       229      2014-12-24T03:30:00  WeakScatterers  -77.58222908  166.1788259