Structure for nutrient databases: Field Field Name Type Width Dec 1 CRUISE Character 21 Cruise and/or PI 2 STATION Numeric 4 Station 3 LATDEG Numeric 2 Latitude degrees 4 LATMIN Numeric 4 1 Latitude minutes 5 LATHEM Character 1 Latitude hemisphere 6 LONGDEG Numeric 3 Longitude degrees 7 LONGMIN Numeric 4 1 Longitude minutes 8 LONGHEM Character 1 Longitude hemisphere 9 CAST_ID Character 6 Cast identification 10 DAY Numeric 2 Day 11 MON Numeric 2 Month 12 YEAR Numeric 2 Year 13 TIME_HR Numeric 2 Hour 14 TIME_MIN Numeric 2 Minutes 15 SAMPLE_ID Character 6 Sample ID 16 DEPTH Numeric 5 Depth in meters 17 PRE_NO3 Character 1 If <, below detection limit 18 NO3 Numeric 6 2 Nitrate 19 PRE_NO2 Character 1 If <, below detection limit 20 NO2 Numeric 6 2 Nitrite 21 PRE_SIO Character 1 If <, below detection limit 22 SIO3 Numeric 6 2 Silicon 23 PRE_PO4 Character 1 If <, below detection limit 24 PO4 Numeric 6 2 Phosphate 25 PRE_NH4 Character 1 If <, below detection limit 26 NH4 Numeric 6 2 Ammonia 27 PRE_O2 Character 1 If <, below detection limit 28 O2 Numeric 6 2 Oxygen 29 TEMP Numeric 5 2 Temperature 30 SAL Numeric 6 3 Salinity 31 REMARKS Character 20 Remarks ** Total ** 141