cruise_informal 
project name for the cruise

text 
cruise_id 
cruiseid 
official name of the cruise

text 
cruise_id 
date_local 
date of measurement

m/dd/yyyy 
date_local 
time_local 
local time of day

HH:MM 
time 
lat 
the latitude of the CTD or station

decimal degrees 
lat 
lon 
the longitude of the CTD or station; negative means West of Greenwich

decimal degrees 
lon 
station 
sequential cruise station number

number 
station 
CTD 
sequential CTD cast number

number 
cast 
temp 
water temperature

degrees centrigrade 
temperature 
sal 
water salinity

PSU 
sal 
secchi_depth 
depth at which the Secchi disk could no longer be distinguished

meters 
depth 
PAR 
Photosynthetically active radiation; designates the spectral range (wave band) of solar radiation from 400 to 700 nanometers that photosynthetic organisms are able to use in the process of photosynthesis

microEinsteins per square meter per second 
PAR 
atten 
attenuation coefficient

per meter 
beam_c 
atten_err 
error for attenuation coefficient

calculated number 
std_err 
depth_sample 
depth of the sample data

meters 
depth 
cell_counts 
cell counts

cells per milliliter 
count 
counts_sd 
standard deviation of cell counts (i.e.difference from the mean/average)

cells per ml 
std_dev 
counts_se 
standard error of cell counts (taking into account the number of samples tested. Error is used to get a better representation of the deviation/error with larger numbers of samples; such as cell counts where we average 10 fields of view to get a number)

cells per milliliter 
std_err 
bact_prod 
bacterial production of the whole sample

nanograms of Carbon per Liter per hour 
production 
bact_prod_sd 
standard deviation of measurement of bacterial production

nanograms of Carbon per Liter per hour 
std_dev 
bact_prod_lt_pt8 
bacterial production of the part of the sample less than 0.8 microns

nanograms of Carbon per Liter per hour 
production 
bact_prod_lt_pt8_sd 
standard deviation of bacterial production of the part of the sample less than 0.8 microns

nanograms of Carbon per Liter per hour 
std_dev 
bact_size_frac 
percentage of the whole sample that is less than 0.8 microns

percentage 
unknown 
chla 
chlorophyll a concentration

micrograms per liter 
chl_a 
chla_sd 
standard deviation of chlorophyll measurements

micrograms per liter 
std_dev 
NO3 
Nitrate concentration

micromoles per liter 
NO3 
NO3_sd 
standard deviation of Nitrate measurements

micromoles per liter 
std_dev 
NH4 
Ammonium concentration

micromoles per liter 
NH4 
NH4_sd 
standard deviation of Ammonium measurements

micromoles per liter 
std_dev 
PO4 
Phosphate concentration

micromoles per liter 
PO4 
PO4_sd 
standard deviation of Phosphate measurements

micromoles per liter 
std_dev 
SiO4 
Silicate concentration

micromoles per liter 
SiO4 
SiO4_sd 
standard deviation of Silicate measurements

micromoles per liter 
std_dev 
viral_count 
number of viruses in the sample

numbers per milliliter 
abundance 
viral_count_sd 
standard deviation of the count of the number of viruses in the sample

numbers per milliliter 
std_dev 