sequence_id  date        time   site                          lat      lon        sal_surf  sal_bot  temp  depth  tow_description                      mesh  
TDN22        2007-06-27  06:14  D41A                          38.08472  -122.3907  10.6      10.6     18.7  1.0    7_min_near_bottom                    100   
TDN23        2007-10-17  09:15  D6                            38.0447  -122.1156  19.0      18.9     19.0  9.0    5_min_near_bottom                    150   
TDN24        2007-08-21  06:34  D41A                          38.08472  -122.3907  19.3      19.2     18.7  2.0    5_min_near_bottom                    100   
TDN25        2007-08-21  08:52  D6                            38.0444  -122.1163  8.0       11.7     19.9  10.0   5_min_near_bottom                    100   
TDN26        2006-11-15  10:00  48                            38.0600  -121.9944  9.9       14       15.2  14.6   3_min_oblique:_1_bot;_1_mid;_1_surf  150   
TDN27        2007-10-17  07:25  D41A                          38.08472  -122.3907  19.3      19.3     18.6  2.6    5_min_near_bottom                    150   
TDN28        2008-05-31  16:15  Petaluma_R.;_Black_Pt._pier   38.1146  -122.5062  20.0      nd       nd    1.0    two_3_min_tows_near_bottom           100