site          sitenum  datetime             Group           lat           lon          
site112       112      2014-12-21T03:27:00  Silverfish      -77.62248718  165.9260283  
site112       112      2014-12-21T03:27:00  LargeFish       -77.62248393  165.9260309  
site112       112      2014-12-21T03:27:00  Krill           -77.62249957  165.9261138  
site112       112      2014-12-21T03:27:00  WeakScatterers  -77.6223695   165.9264165