sta              cast             date             time             lat              lon              bot              depth            vol_filt         Si_bio           
5                8                20070811         2031             23.77            -159.203         24               5                4                0.006212495      
5                8                20070811         2031             23.77            -159.203         21               25               4                0.039921032      
5                8                20070811         2031             23.77            -159.203         18               45               4                0.013920591      
5                8                20070811         2031             23.77            -159.203         15               75               4                0.008283327      
5                8                20070811         2031             23.77            -159.203         13               100              4                0.007938188      
5                8                20070811         2031             23.77            -159.203         11               125              4                0.019442808      
5                8                20070811         2031             23.77            -159.203         9                150              10               0.005338144      
5                8                20070811         2031             23.77            -159.203         6                175              10               0.003681478      
5                8                20070811         2031             23.77            -159.203         3                200              10               0.008697493      
19               11               20070817         0005             23.218           -159.177         21               25               4                0.007641913      
19               11               20070817         0005             23.218           -159.177         17               45               4                0.005208977      
19               11               20070817         0005             23.218           -159.177         14               75               4                0.004522765      
19               11               20070817         0005             23.218           -159.177         12               100              4                0.002963191      
19               11               20070817         0005             23.218           -159.177         10               125              4                0.007766679      
19               11               20070817         0005             23.218           -159.177         7                150              10               0.01369306       
19               11               20070817         0005             23.218           -159.177         5                175              10               0.008702423      
19               11               20070817         0005             23.218           -159.177         4                200              10               0.009825317