3. All of these items above the spreadsheet are metadata. There are 2 types of metadata:
- "Use metadata" - Information items needed to process data
- "Discovery metadata" - Information about datasets needed to find them in larger aggregates or collections
The first lines of the header, identified by *, contain use metadata about the SeaBird system. Also the items identified NMEA (for National Marine Electronics Association) are possibly plug-in data from a navigation system, providing location and time.
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* Sea-Bird SBE 9 Data File:
* FileName = C:\Seabird\CTDData\STA0865.dat
* Software Version Seasave Win32 V 5.30a
* Temperature SN = 2369
* Conductivity SN = 1827
* Number of Bytes Per Scan = 21
* Number of Voltage Words = 3
* Number of Scans Averaged by the Deck Unit = 1
* System UpLoad Time = Aug 31 2008 07:23:08
* NMEA Latitude = 25 55.56 S
* NMEA Longitude = 044 29.10 E
* NMEA UTC (Time) = none
* Store Lat/Lon Data = Append to .NAV File When <Ctrl F7> is Pressed
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7. The lines identified by # are mainly use metadata, including parameter identifications ("name" lines), and value ranges ("span" lines). |
# nquan = 12
# nvalues = 1179
# units = specified
# name 0 = scan: Scan Count
# name 1 = prDM: Pressure, Digiquartz [db]
# name 2 = t068C: Temperature [ITS-68, deg C]
# name 3 = c0S/m: Conductivity [S/m]
# name 4 = sbeox0V: Oxygen Voltage, SBE 43
# name 5 = flCUVA: Fluorescence, Chelsea UV Aquatracka [ug/l]
# name 6 = sbeox0ML/L: Oxygen, SBE 43 [ml/l], WS = 2
# name 7 = sal00: Salinity [PSU]
# name 8 = sigma-t00: Density [sigma-t, Kg/m^3 ]
# name 9 = svCM: Sound Velocity [Chen-Millero, m/s]
# name 10 = avgsvCM: Average Sound Velocity [Chen-Millero, m/s], minP = 0, minS = 0, pWS = 20, tWS = 60
# name 11 = flag: flag
# span 0 = 1816, 35605
# span 1 = 4.000, 1182.000
# span 2 = 4.9494, 22.8567
# span 3 = 3.369758, 5.139570
# span 4 = 1.3456, 2.7156
# span 5 = 0.0326, 0.3256
# span 6 = 2.84729, 4.87066
# span 7 = 34.5666, 35.8154
# span 8 = 24.2935, 27.4672
# span 9 = 1487.67, 1530.07
# span 10 = 1501.21, 1529.70
# span 11 = 0.0000e+00, 0.0000e+00
# interval = decibars: 1
# start_time = Aug 31 2008 07:23:08
# bad_flag = -9.990e-29
# sensor 0 = Frequency 0 temperature, 2369, 25-Jul-07
# sensor 1 = Frequency 1 conductivity, 1827, 23-Jun-06, cpcor = -9.5700e-08
# sensor 2 = Frequency 2 pressure, 53966, 17-Jun-93
# sensor 3 = Extrnl Volt 0 Oxygen, SBE, primary, 1102, 17-Oct-06
# sensor 4 = Extrnl Volt 4 Fluorometer, Chelesa UV Aquatracka, 88/2615/119, 1994-12-15
# datcnv_date = Aug 31 2008 08:08:19, 5.30a
# datcnv_in = C:\Seabird\CTDData\sta0865.dat C:\Seabird\SBEDataProcessing-Win32\Seasoft.con
# datcnv_skipover = 0
# wildedit_date = Aug 31 2008 08:08:21, 5.30a
# wildedit_in = C:\Seabird\CTDData\sta0865.cnv
# wildedit_pass1_nstd = 2.0
# wildedit_pass2_nstd = 20.0
# wildedit_pass2_mindelta = 5.000e-003
# wildedit_npoint = 100
# wildedit_vars = prDM t068C c0S/m sbeox0V flCUVA
# wildedit_excl_bad_scans = yes
# celltm_date = Aug 31 2008 08:08:27, 5.30a
# celltm_in = C:\Seabird\CTDData\sta0865.cnv
# celltm_alpha = 0.0300, 0.0000
# celltm_tau = 7.0000, 0.0000
# celltm_temp_sensor_use_for_cond = primary,
# filter_date = Aug 31 2008 08:08:37, 5.30a
# filter_in = C:\Seabird\CTDData\sta0865.cnv
# filter_low_pass_tc_A = 0.030
# filter_low_pass_tc_B = 0.150
# filter_low_pass_A_vars = c0S/m sbeox0V flCUVA
# filter_low_pass_B_vars = prDM
# loopedit_date = Aug 31 2008 08:08:50, 5.30a
# loopedit_in = C:\Seabird\CTDData\sta0865.cnv
# loopedit_minVelocity = 0.250
# loopedit_excl_bad_scans = yes
# Derive_date = Aug 31 2008 08:09:03, 5.30a
# Derive_in = C:\Seabird\CTDData\sta0865.cnv C:\Seabird\SBEDataProcessing-Win32\Seasoft.con
# derive_time_window_docdt = seconds: 2
# binavg_date = Aug 31 2008 08:09:13, 5.30a
# binavg_in = C:\Seabird\CTDData\sta0865.cnv
# binavg_bintype = decibars
# binavg_binsize = 1
# binavg_excl_bad_scans = yes
# binavg_skipover = 0
# binavg_surface_bin = no, min = 0.000, max = 0.000, value = 0.000
# Derive_date = Aug 31 2008 08:09:21, 5.30a
# Derive_in = C:\Seabird\CTDData\sta0865.cnv C:\Seabird\SBEDataProcessing-Win32\Seasoft.con
# file_type = ascii
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