Metadata Report for BODC Series Reference Number 636790


Metadata Summary

Data Description

Data Category Offshore sea floor pressure series
Instrument Type
NameCategories
Aanderaa WLR 7 Water Level Recorder  sea level recorders; water temperature sensor
Instrument Mounting subsurface mooring
Originating Country United Kingdom
Originator Mr John Howarth
Originating Organization Proudman Oceanographic Laboratory (now National Oceanography Centre, Liverpool)
Processing Status banked
Project(s) Coastal Observatory
 

Data Identifiers

Originator's Identifier WR0445.00851
BODC Series Reference 636790
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 2002-08-07 12:49
End Time (yyyy-mm-dd hh:mm) 2002-09-25 12:19
Nominal Cycle Interval 600.0 seconds
 

Spatial Co-ordinates

Latitude 53.53280 N ( 53° 32.0' N )
Longitude 3.36730 W ( 3° 22.0' W )
Positional Uncertainty 0.05 to 0.1 n.miles
Minimum Sensor Depth 24.0 m
Maximum Sensor Depth 24.0 m
Minimum Sensor Height 1.0 m
Maximum Sensor Height 1.0 m
Sea Floor Depth 25.0 m
Sensor Distribution Fixed common depth - All sensors are grouped effectively at the same depth which is effectively fixed for the duration of the series
Sensor Depth Datum Sea floor reference - Depth measured as a height above sea floor but converted into a depth relative to the sea surface according to the same datum as used for sea floor depth (applicable to instrument depths not bathymetric depths)
Sea Floor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
 

Parameters

BODC CODE Rank Units Short Title Title
AADYAA01 1 Days Date(Loch_Day) Date (time from 00:00 01/01/1760 to 00:00 UT on day)
AAFDZZ01 1 Days Time(Day_Fract) Time (time between 00:00 UT and timestamp)
ACYCAA01 1 Dimensionless Record_No Sequence number
PREXPS01 1 Decibars MeasPress_SL Pressure (measured variable) exerted by the water body by fixed in-situ pressure sensor and corrected to read zero at sea level
TEMPPR01 1 Degrees Celsius Temp Temperature of the water body
 

Definition of Rank

  • Rank 1 is a one-dimensional parameter
  • Rank 2 is a two-dimensional parameter
  • Rank 0 is a one-dimensional parameter describing the second dimension of a two-dimensional parameter (e.g. bin depths for moored ADCP data)

Problem Reports

No Problem Report Found in the Database

Originator's quality control comments for PD20_02 COBS moorings

Data supplied to BODC were accompanied by data quality notes from the Originator that detailed observations made when the data were processed and subsequent processing decisions. A summary of these notes is available below for each of the instruments deployed on rigs from this cruise.

Rig#851

Instrument Serial number Instrument depth Data quality comments
Aanderaa RCM fitted with a Sea-Tech transmissometer ST637 11817 Located on seabed The pressure data was found to be unrealistic and was replaced with data from an alongside instrument. Conductivity values became erratic after 2002-08-09 16:55:00 UTC and were replaced by absent data indicators by the Data Originator. There is a large offset in the conductivity data, however no corrections have been performed on this channel by the Data Originator. Temperature values were changed by -0.004°C after comparisons against CTD data and alongside instruments. These data should be used with caution.
Aanderaa BPR 0445 Located on seabed Temperature values were unrealistic from deployment until 2002-07-08 19:09:40 UTC. Values recorded over this period were set to absent data indicators by the Data Originator. A large offset was found by comparing the temperature channel with CTD data recorded during the deployment and recovery of the mooring. Comparisons performed against CTD data found that data from this sensor differed from CTD data by -0.095°C at deployment (CTD performed approximately 400 m from mooring) and -0.236°C at recovery (distance between CTD and mooring was approximately 590 m). Comparisons against the data from Aanderaa 11817 suggested an offset even greater than -0.236°C. The Originator did not attempt to perform any corrections to the data, and recommends that these data be used with caution.
Teledyne RDI 600 kHz ADCP 2391 Located on seabed
  • To correct for the magnetic declination (difference between magnetic north and true north) latitude values were changed by -4.4593°.
  • All latitude values were modified by +2.8201° to correct for the compass error.
  • Analysis of these data revealed that the midwater bins had been contaminated by interference from the recovery line attached to the ADCP lander frame. It was not possible to perform three beam correction because the long beam velocities were not recorded. Because of this the Data Originator recommends that these data are used with caution.
  • Rig#853


    Instrument Serial number Instrument depth Data quality comments
    Aanderaa RCM 10526 2 m There is a possible drift in the conductivity sensor during this deployment, however the Originator did not make any adjustments to the data. The Originator recommends that these data are used with caution.
    Aanderaa RCM 09631 5 m None.
    Aanderaa RCM 09959 10 m Quality checks revealed a large disparity between these data and the data recorded by the CTD during mooring deployment and recovery, however the Originator did not make any adjustments to the data as there was no consistent offset which could be used to adjust the data. The Originator recommends that these data are used with caution.

    Data Access Policy

    Open Data supplied by Natural Environment Research Council (NERC)

    You must always use the following attribution statement to acknowledge the source of the information: "Contains data supplied by Natural Environment Research Council."


    Narrative Documents

    Aanderaa Water Level Recorder Model 7

    The Water Level Recorder (WLR) model 7 is a self-contained, high precision instrument specifically designed for recording of ocean water levels through precise measurement of hydrostatic pressure. The WLR records pressure, temperature and conductivity (optional) at regular intervals, enabling precise variations in water level to be calculated. The pressure sensor consists of an oscillating quartz crystal which shifts frequency with the force applied to it. Temperature is measured by a Fenwall thermistor.

    The data from the WLR7 are stored in a solid-state data storage unit (DSU) which can store up to 65,500 ten bit, PDC-4 coded words in a set of EEPROMS. Click the link for further details on the WLR7 .

    Specifications

    Pressure

    Oscillator Frequency 36-40 kHz
    Resolution 0.001% of range
    Repeatability ± 0.01% of full scale
    Integration 40 s
    Ranges available 0 - 700 kPA (60 m) (standard)
    0 - 3500 kPa (340 m) (standard)

    Temperature

    The thermistor is a Fenwall GB32JM19

    Range -3 °C to +35 °C
    Accuracy ± 0.1 °C
    Resolution 0.04 °C
    Response Time 30 s

    Conductivity (optional)

    Sensor Type Conductivity Cell 3094
    Ranges 0 - 77 mmho cm -1 (standard)
    0 - 42 mmho cm -1 (on request)
    Accuracy ± 0.25 mmho cm -1
    Resolution 0.1% of range

    Further details can be found in the manufacturer's specification sheet .

    Coastal Observatory Aanderaa BPR Data Processing

    Data Processing at POL

    Bottom Pressure Recorders deployed during the Coastal Observatory were set up to sample at an interval of 10 minutes. Data processing was carried out at Proudman Oceanographic Laboratory where data were integrated over a 40-second period for each datacycle. The time stamp for each record was adjusted to reflect this integration period.

    The pressure data recorded by the Aanderaa BPR initially included atmospheric pressure as well as pressure exerted by the water column. Pressure was initially recorded in bars. The data were converted from bars to dbar before being sent to BODC. The Originator subtracted 10 dbar from all values to remove the atmospheric component of the pressure measurements.

    Before the data were supplied to BODC, basic quality control was performed by the Data Originator. The first stage of quality checks involved comparing the data from each instrument with CTD measurements recorded during the deployment and recovery of the mooring. Following the comparison against CTD data secondary checks were performed by comparing the data from each instrument against the data from other sensors attached to that mooring. The Originator has provided BODC with a document containing a full description of their quality control methodology . Depending on the result of the quality checks for each series, one of the following actions was performed by the Originator:

    A full description of the results of these quality checks can be found in the relevant Originator's data processing comments document.

    Processing of Aanderaa bottom pressure recorder (BPR) data by BODC

    The data were provided to BODC in ASCII format, and the series were reformatted into BODC standard internal format using a transfer function. The following table shows how the Originator's variables present in the Aanderaa data were mapped to the appropriate BODC parameter codes.

    Originator's variable Units Description BODC parameter code Units Comments
    Date/Time yyyy mm dd hh mm ss - - - This variable was not transferred. BODC re-calculate date and time during the transfer process
    Temperature Deg(C) Temperature (ITS-90) of the water body TEMPPR01 °C -
    Pressure dbar Pressure (measured variable) exerted by the water body by fixed in-situ pressure sensor and corrected to read zero at sea level PREXPS01 db -

    The reformatted data were visualised using the in-house EDSERPLO software. Suspect data were marked by adding an appropriate quality control flag, missing data by both setting the data to an appropriate value and setting the quality control flag.

    General Data Screening carried out by BODC

    BODC screen both the series header qualifying information and the parameter values in the data cycles themselves.

    Header information is inspected for:

    Documents are written by BODC highlighting irregularities which cannot be resolved.

    Data cycles are inspected using time or depth series plots of all parameters. Currents are additionally inspected using vector scatter plots and time series plots of North and East velocity components. These presentations undergo intrinsic and extrinsic screening to detect infeasible values within the data cycles themselves and inconsistencies as seen when comparing characteristics of adjacent data sets displaced with respect to depth, position or time. Values suspected of being of non-oceanographic origin may be tagged with the BODC flag denoting suspect value; the data values will not be altered.

    The following types of irregularity, each relying on visual detection in the plot, are amongst those which may be flagged as suspect:

    If a large percentage of the data is affected by irregularities then a Problem Report will be written rather than flagging the individual suspect values. Problem Reports are also used to highlight irregularities seen in the graphical data presentations.

    Inconsistencies between the characteristics of the data set and those of its neighbours are sought and, where necessary, documented. This covers inconsistencies such as the following:

    This intrinsic and extrinsic screening of the parameter values seeks to confirm the qualifying information and the source laboratory's comments on the series. In screening and collating information, every care is taken to ensure that errors of BODC making are not introduced.


    Project Information

    Proudman Oceanographic Laboratory Coastal Observatory

    The Coastal Observatory was established by Proudman Oceanographic Laboratory as a coastal zone real time observing and monitoring system. The main objective is to understand a coastal sea's response both to natural forcing and to the consequences of human activity. Near real-time measurements will be integrated with coupled models into a pre-operational coastal prediction system whose results will be displayed on the World Wide Web.

    The Observatory is expected to grow and evolve as resources and technology allow, all the while building up long time series. A site selection pilot study was carried out in September 2001 and the Observatory became operational in August 2002.

    The site is located in Liverpool Bay and is subject to typical coastal sea processes, with strong tides, occasional large storm surges and waves, freshwater input, stable and unstable stratification, high suspended sediment concentration and biogeochemical interaction. Measurements and monitoring will focus on the impacts of storms, variations in river discharge (especially the Mersey), seasonality and blooms in Liverpool Bay.

    A variety of methods will be used to obtain measurements, including:

    1. Moored instruments for in situ time series of currents, temperature and salinity profiles, and surface waves and meteorology. It is hoped that turbidity and chlorophyll measurements will be made at another site as the Observatory progresses;
    2. The Cefas Smartbuoy for surface properties such as nutrients and chlorophyll, starting late 2002;
    3. R.V. Prince Madog to carry out spatial surveys and service moorings;
    4. Instrumented ferries for near surface temperature, salinity, turbidity, chlorophyll and nutrients. The first route will be Liverpool to Douglas, Isle of Man, starting late 2002;
    5. Drifters for surface currents and properties such as temperature and salinity, starting in 2004;
    6. Tide gauges, with sensors for meteorology, waves, temperature and salinity, where appropriate;
    7. Meteorological data from Bidston Observatory and Hilbre Island, HF radar and tide gauge sites;
    8. Shore-based HF radar measuring waves and surface currents out to a range of 50 km, starting in 2003;
    9. Satellite data, with infrared for sea surface temperature and visible for chlorophyll and suspended sediment.

    The partners currently involved with the project are listed below:

    A summary of Coastal Observatory cruises to date on R.V. Prince Madog is given in the table below:

    Year No. of cruises Work summary
    2001 1 Site selection and pilot study. 95 CTD casts.
    2002 4 POL moorings deployed and serviced
    Cefas Waverider and SmartBuoy deployed and serviced
    103 CTD casts
    2003 10 POL moorings serviced
    Cefas Waverider and SmartBuoy serviced
    341 CTD/LISST casts
    2004 9 POL moorings serviced
    Cefas Waverider and SmartBuoy serviced
    347 CTD/LISST casts
    2005 9 POL moorings serviced
    Cefas Waverider and SmartBuoy serviced
    268 CTD/LISST casts
    2006 11 POL moorings serviced
    Cefas Waverider and SmartBuoy serviced
    508 CTD/LISST casts
    2007 9 POL moorings serviced
    Cefas Waverider and SmartBuoy serviced
    471 CTD/LISST casts
    2008 9 POL moorings serviced
    Cefas Waverider and SmartBuoy serviced
    260 CTD/LISST casts
    2009 7 POL moorings serviced
    Cefas Waverider and SmartBuoy serviced
    213 CTD/LISST casts
    2010 8 POL moorings serviced
    Cefas Waverider and SmartBuoy serviced
    268 CTD/LISST casts
    2011 6 POL moorings serviced
    Cefas Waverider and SmartBuoy serviced
    307 CTD/LISST casts to date, ongoing

    Data Activity or Cruise Information

    Data Activity

    Start Date (yyyy-mm-dd) 2002-08-07
    End Date (yyyy-mm-dd) 2002-09-25
    Organization Undertaking ActivityProudman Oceanographic Laboratory (now National Oceanography Centre, Liverpool)
    Country of OrganizationUnited Kingdom
    Originator's Data Activity IdentifierPOLRIG#851
    Platform Categorysubsurface mooring

    Proudman Oceanographic Laboratory Rig#851

    This rig was deployed as part of the Liverpool Bay Coastal Observatory during R.V. Prince Madog cruise PD020_02.

    Rig Position 53.5328° N, 3.3673° W
    Water Depth 25m
    Deployed 07 August 2002 12:55
    Recovered 25 September 2002 12:15

    The instruments were mounted on POL frame D1, which was deployed onto the sea floor. The frame was fitted with two Benthos releases (1B and 7A) and a spooler for recovery of the ballast weight.

    Recovery of the rig took place during R.V. Prince Madog cruise PD024_02. The acoustic releases were fired but the frame did not surface as expected. Sweeping for the rig was commenced, using a loop of wire the width of the stern. After several attempts, the frame and ballast weight were snagged and recovered. Inspection showed that both releases had fired but the frame had not surfaced because the spooler had jammed.

    It was noted that the frame was completely covered by a "hairy" algal growth.

    Instrument Meter Height Parameters Measured
    ADCP 2391 0.5m Velocity profile
    Transmissometer ST637 0.5m Temperature, conductivity, pressure, beam attenuation
    Pressure recorder 445 0.5m Temperature, pressure

    Other Series linked to this Data Activity - 1623710 593235 592951

    Cruise

    Cruise Name PD20/02
    Departure Date 2002-08-07
    Arrival Date 2002-08-08
    Principal Scientist(s)M John Howarth (Proudman Oceanographic Laboratory)
    Ship RV Prince Madog

    Complete Cruise Metadata Report is available here


    Fixed Station Information

    Fixed Station Information

    Station NameCOA
    CategoryOffshore area
    Latitude53° 31.51' N
    Longitude3° 23.00' W
    Water depth below MSL26.0 m

    Liverpool Bay Coastal Observatory Mooring Site A (COA/Site 1/Site 9)

    This station is the main mooring site for the Proudman Oceanographic Laboratory (POL) Liverpool Bay Coastal Observatory and was first occupied in 2002. It is also known both as Coastal Observatory Site 1 and Site 9. POL perform two main types of activities at this station: they deploy moorings; and in addition, they take CTD profiles during each site visit. The station lies within a box of mean water depth 22.5 m with the following coordinates:

    Box Corner Latitude (+ve North) Longitude (+ve East)
    North-west corner 53.54097 -3.42958
    South-east corner 53.50945 -3.33714

    The position of this station relative to the other POL Coastal Observatory sites can be seen from the figure below.

    BODC image

    Mooring Deployment History

    2011

    Rig Type Typical Instruments Rig IDs Comment
    Frame ADCP, CTD, OBS, OXY 1117, 1121, 1125, 1127, 1130, 1132, January - November
    SmartBuoy CTD x 2, AC-S, CT x 2, FL x 3, OBS x 2, PAR x 2, WMS, NAS, OXY, T x 2 1116, 1120, 1124 January - November

    2010

    Rig Type Typical Instruments Rig IDs Comment
    Frame ADCP, CTD, ADV, OBS 1086, 1090, 1094, 1098, 1102, 1106, 1109 January - December
    SmartBuoy CT x 2, FL x 2, OBS, PAR x 2, WMS, NAS, CTD, OXY, BD, T 1085, 1089, 1093, 1097, 1101, 1105, 1108, 1112 January - December

    2009

    Rig Type Typical Instruments Rig IDs Comment
    Frame ADCP, CTD, ADV, OBS 1055, 1062, 1067, 1071, 1074, 1078, 1082 January - December
    SmartBuoy CT x 2, FL x 2, OBS, PAR x 2, WMS, NAS, CTD, OXY, BD, T 1054, 1061, 1066, 1070, 1073, 1077, 1081 January - December

    2008

    Rig Type Typical Instruments Rig IDs Comment
    Frame ADCP, CTD, ADV, OBS 1024, 1028, 1032, 1036, 1041, 1044, 1047, 1051 January - December
    SmartBuoy CT x 2, FL x 2, OBS, PAR x 2, WMS, NAS, CTD, OXY, BD, T LB1_047/1023, LB1_048/1027, LB1_049/1031, LB1_050/1035, 1040, 1043, LB1_053/1050 January - December

    2007

    Rig Type Typical Instruments Rig IDs Comment
    Frame ADCP, CTD, ADV, OBS 990, 997, 1001, 1005, 1010, 1014, 1017, 1021 January - December
    SmartBuoy CT x 2, FL x 2, OBS, PAR x 2, WMS, NAS, CTD, OXY, BD, T LB1_039/989, LB1_040/996, LB1_041/1000, LB1_042/1004, LB1_043/1009, LB1_044/1013, LB1_045/1016, LB1_046/1020 January - December

    2006

    Rig Type Typical Instruments Rig IDs Comment
    Frame ADCP, CTD, ADV, OBS 951, 962, 966, 970, 974, 978, 982, 986 January - December
    SmartBuoy CT x 2, FL x 2, OBS, PAR x 2, WMS, NAS, CTD, OXY, BD 958, 961, 965, 969, 973, 977, LB1_037/981, LB1_038/985 January - December

    2005

    Rig Type Typical Instruments Rig IDs Comment
    Frame ADCP, CT 913, 914, 921, 925, 929, 933, 938, 942, 945, 949 January - December
    SmartBuoy CT, FL, OBS, PAR, WMS, NAS, OXY 912, 920, 924, 928, 932, 937, LB1_028/941, LB1_029/944, LB1_030/948 January - December
    Frame with telemetry buoy ADCP 914 March - April

    2004

    Rig Type Typical Instruments Rig IDs Comment
    Frame BPR, ADCP, TR, CT 890, 892, 893, 896, 898, 900, 902, 904, 907, 908, 910, 911 January - December
    SmartBuoy CT, FL, OBS, PAR, WMS, NAS 889, 891, 895, 897, 899, 901, 903, 906, 909 January - December
    Frame with telemetry buoy ADCP 893, 908, 911 April - May, October - December

    2003

    Rig Type Instruments Rig IDs Comment
    Frame BPR, ADCP, TR, CT 861, 864, 866, 869, 872, 878, 880, 883, 885, 887, 888 January - December
    SmartBuoy CT, FL, OBS, PAR, WMS, NAS 863, 865, 867, 870, 871, 877, 879, 882, 884, 886 January - December

    2002

    Rig Type Instruments Rig IDs Comment
    Frame BPR, ADCP, TR, CT 851, 854, 856, 858 August - December
    Line mooring CT x 3 853, 855 August - November
    SmartBuoy CT, FL, OBS, PAR, WMS, NAS 857, 860 November - December

    2001

    Rig Type Instruments Rig IDs Comment
    Frame ADCP, OBS 838, 839, 840, 841, 843, 844, 845, 846, 848, 849 September

    CTD Sampling History

    Year Number of Cruises Total Casts per year
    2011 6 116 including a 46 cast tidal cycle from 2011-04-18 to 2011-04-19 and a 51 cast tidal cycle station from 2011-07-27 to 2011-07-28
    2010 8 71 including a 52 cast tidal cycle station from 2010-04-28 to 2010-04-29
    2009 7 21
    2008 9 75 including a 54 cast tidal cycle station from 2008-05-13 to 2008-05-14
    2007 8 71 including a 51 cast tidal cycle station from 2007-05-15 to 2007-05-16
    2006 9 72 including a 53 cast tidal cycle station from 2006-05-09 to 2006-05-10
    2005 9 41 including a 22 cast tidal cycle station from 2005-04-05 to 2005-04-06
    2004 9 77 including a 54 cast tidal cycle station from 2004-05-11 to 2004-05-12
    2003 10 28
    2002 4 13

    The CTD instrument package for these cruises was a Sea-Bird 911plus, with beam transmissometer, fluorometer, LICOR PAR sensor, LISST-25, and oxygen sensor.

    Key

    AC-S = Absorption and attenuation spectrophotometer
    ADCP = Acoustic Doppler Current Profiler
    ADV = Acoustic Doppler Velocimeter
    BD = Bacterial degradation experiment
    BPR = Bottom Pressure Recorder
    CT = Conductivity and temperature logger
    CTD = Conductivity, temperature, depth sensor
    FL = Fluorometer
    NAS = in-situ nutrient analyser
    OBS = Optical Backscatter Turbidity meter
    OXY = Oxygen sensor
    PAR = PAR sensor
    T = Temperature logger
    TR = Transmissometer
    WMS = Automatic water sampler

    Other Series linked to this Fixed Station for this cruise - 592914 592926 592938 592951 593235 1623710

    Other Cruises linked to this Fixed Station (with the number of series) - CO 01/12 (5) PD01/08 (17) PD01/11 (14) PD02/03 (10) PD02/05 (11) PD02/07 (15) PD02/09B (17) PD02/10 (15) PD04/06 (1) PD05/10 (16) PD06/04 (12) PD06/07 (16) PD07/08 (14) PD07/11 (17) PD09/06 (11) PD09/07 (64) PD09/08 (16) PD10/03 (9) PD10/10 (14) PD11/04B (13) PD11/05 (9) PD11/11 (57) PD12/05 (2) PD12/09 (16) PD13/07 (14) PD14/08 (67) PD16/06 (9) PD16/07 (15) PD17/03 (12) PD17/10 (15) PD18/04 (13) PD18/05 (11) PD18/09 (17) PD19/08 (2) PD20/06 (9) PD20/07 (17) PD21/05 (10) PD21/10 (15) PD21/11 (9) PD22/04 (13) PD22/06 (9) PD23/03A (10) PD23/07 (15) PD23/08 (13) PD24/02 (2) PD24/09 (17) PD25/03B (12) PD25/05 (11) PD25/06 (9) PD25/11 (7) PD27/07 (17) PD29/04 (12) PD29/06 (9) PD29/08 (14) PD29/10 (17) PD30/05 (10) PD31/02 (11) PD31/03 (12) PD32/04 (12) PD33/08 (5) PD33/09 (16) PD34/03 (12) PD34/05 (10) PD35/02 (11) PD35/06 (14) PD36/10 (16) PD37/06 (14) PD37/08 (18) PD38/03 (13) PD38/04 (12) PD38/09 (16) PD41/05 (11) PD43/11 (11) PD44/03 (7) PD47/09 (15) PD48/03 (5) PD48/04 (8) PD48/05 (10) PD49/10 (14) PD52/04 (8)


    BODC Quality Control Flags

    The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:

    Flag Description
    Blank Unqualified
    < Below detection limit
    > In excess of quoted value
    A Taxonomic flag for affinis (aff.)
    B Beginning of CTD Down/Up Cast
    C Taxonomic flag for confer (cf.)
    D Thermometric depth
    E End of CTD Down/Up Cast
    G Non-taxonomic biological characteristic uncertainty
    H Extrapolated value
    I Taxonomic flag for single species (sp.)
    K Improbable value - unknown quality control source
    L Improbable value - originator's quality control
    M Improbable value - BODC quality control
    N Null value
    O Improbable value - user quality control
    P Trace/calm
    Q Indeterminate
    R Replacement value
    S Estimated value
    T Interpolated value
    U Uncalibrated
    W Control value
    X Excessive difference

    SeaDataNet Quality Control Flags

    The following single character qualifying flags may be associated with one or more individual parameters with a data cycle:

    Flag Description
    0 no quality control
    1 good value
    2 probably good value
    3 probably bad value
    4 bad value
    5 changed value
    6 value below detection
    7 value in excess
    8 interpolated value
    9 missing value
    A value phenomenon uncertain