island      site_name    latitude       longitude      depth_feet    date          observer    
Amchitka    5            51.40283       179.35628      20            2014-07-09    Konar       
Amchitka    18           51.41183       179.27342      20            2014-07-09    Konar       
Amchitka    23           51.42663       179.22643      20            2014-07-09    Konar       
Amchitka    26           51.44423       179.21433      20            2014-07-09    Konar       
Amchitka    29           51.45103       179.18983      20            2014-07-09    Konar       
Amchitka    32           51.46262       179.19100      20            2014-07-09    Konar