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Metadata Report for BODC Series Reference Number 832742


Metadata Summary

Data Description

Data Category CTD or STD cast
Instrument Type
NameCategories
Neil Brown MK3 CTD  CTD; water temperature sensor; salinity sensor; dissolved gas sensors
SeaTech transmissometer  transmissometers
Chelsea Technologies Group Aquatracka fluorometer  fluorometers
Instrument Mounting research vessel
Originating Country United Kingdom
Originator Prof Geoff Millward
Originating Organization University of Plymouth Institute of Marine Studies (now University of Plymouth, School of Geography, Earth and Environmental Sciences)
Processing Status banked
Online delivery of data Download available - Ocean Data View (ODV) format
Project(s) Land Ocean Interaction Study (LOIS)
 

Data Identifiers

Originator's Identifier CTD16
BODC Series Reference 832742
 

Time Co-ordinates(UT)

Start Time (yyyy-mm-dd hh:mm) 1993-12-15 07:45
End Time (yyyy-mm-dd hh:mm) -
Nominal Cycle Interval 1.0 decibars
 

Spatial Co-ordinates

Latitude 54.64117 N ( 54° 38.5' N )
Longitude 1.03617 W ( 1° 2.2' W )
Positional Uncertainty 0.0 to 0.01 n.miles
Minimum Sensor or Sampling Depth 0.5 m
Maximum Sensor or Sampling Depth 20.31 m
Minimum Sensor or Sampling Height 4.39 m
Maximum Sensor or Sampling Height 24.2 m
Sea Floor Depth 24.7 m
Sea Floor Depth Source DATAHEAD
Sensor or Sampling Distribution Variable common depth - All sensors are grouped effectively at the same depth, but this depth varies significantly during the series
Sensor or Sampling Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
Sea Floor Depth Datum Instantaneous - Depth measured below water line or instantaneous water body surface
 

Parameters

BODC CODERankUnitsTitle
ATTNZR011per metreAttenuation (red light wavelength) per unit length of the water body by transmissometer
DOXYPR011Micromoles per litreConcentration of oxygen {O2 CAS 7782-44-7} per unit volume of the water body [dissolved plus reactive particulate phase] by in-situ Beckmann probe
OXYSBB011PercentSaturation of oxygen {O2 CAS 7782-44-7} in the water body [dissolved plus reactive particulate phase] by in-situ Beckmann probe and computation from concentration using Benson and Krause algorithm
POTMCV011Degrees CelsiusPotential temperature of the water body by computation using UNESCO 1983 algorithm
PRESPR011DecibarsPressure (spatial co-ordinate) exerted by the water body by profiling pressure sensor and corrected to read zero at sea level
PSALST011DimensionlessPractical salinity of the water body by CTD and computation using UNESCO 1983 algorithm
SIGTPR011Kilograms per cubic metreSigma-theta of the water body by CTD and computation from salinity and potential temperature using UNESCO algorithm
TEMPST011Degrees CelsiusTemperature of the water body by CTD or STD
TSEDTR011Milligrams per litreConcentration of suspended particulate material {SPM} per unit volume of the water body [particulate >unknown phase] by in-situ optical attenuance measurement and calibration against sample data

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


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

Neil Brown MK3 CTD

The Neil Brown MK3 conductivity-temperature-depth (CTD) profiler consists of an integral unit containing pressure, temperature and conductivity sensors with an optional dissolved oxygen sensor in a pressure-hardened casing. The most widely used variant in the 1980s and 1990s was the MK3B. An upgrade to this, the MK3C, was developed to meet the requirements of the WOCE project.

The MK3C includes a low hysteresis, titanium strain gauge pressure transducer. The transducer temperature is measured separately, allowing correction for the effects of temperature on pressure measurements. The MK3C conductivity cell features a free flow, internal field design that eliminates ducted pumping and is not affected by external metallic objects such as guard cages and external sensors.

Additional optional sensors include pH and a pressure-temperature fluorometer. The instrument is no longer in production, but is supported (repair and calibration) by General Oceanics.

Specifications

These specification apply to the MK3C version.

Pressure Temperature Conductivity
Range

6500 m

3200 m (optional)

-3 to 32°C 1 to 6.5 S cm-1
Accuracy

0.0015% FS

0.03% FS < 1 msec

0.0005°C

0.003°C < 30 msec

0.0001 S cm-1

0.0003 S cm-1 < 30 msec

Further details can be found in the specification sheet.

Aquatracka fluorometer

The Chelsea Instruments Aquatracka is a logarithmic response fluorometer. It uses a pulsed (5.5 Hz) xenon light source discharging between 320 and 800 nm through a blue filter with a peak transmission of 420 nm and a bandwidth at half maximum of 100 nm. A red filter with sharp cut off, 10% transmission at 664 nm and 678 nm, is used to pass chlorophyll-a fluorescence to the sample photodiode.

The instrument may be deployed either in a through-flow tank, on a CTD frame or moored with a data logging package.

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

SeaTech Transmissometer

Introduction

The transmissometer is designed to accurately measure the the amount of light transmitted by a modulated Light Emitting Diode (LED) through a fixed-length in-situ water column to a synchronous detector.

Specifications

Notes

The instrument can be interfaced to Aanderaa RCM7 current meters. This is achieved by fitting the transmissometer in a slot cut into a customized RCM4-type vane.

A red LED (660 nm) is used for general applications looking at water column sediment load. However, green or blue LEDs can be fitted for specilised optics applications. The light source used is identified by the BODC parameter code.

Further details can be found in the manufacturer's Manual.

RRS Challenger 108C CTD Data Documentation

Instrumentation

The CTD profiles were taken with an RVS Neil Brown Systems Mk3B CTD incorporating a pressure sensor, conductivity cell, platinum resistance thermometer and a Beckmann dissolved oxygen sensor. The CTD unit was mounted vertically in the centre of a protective cage approximately 1.5 m square. Attached to the bars of the frame were a Chelsea Instruments Aquatracka fluorometer and a SeaTech red light (661 nm) transmissometer with a 25 cm path length.

Above the frame was a General Oceanics rosette sampler fitted with twelve 10-litre water bottles. These comprised a mixture of Niskin, general purpose Go-Flo and ultra-clean teflon lined Go-Flo bottles as dictated by sampling requirements. The bases of the bottles were 0.75 m above the pressure head and their tops 1.55 m above it. One bottle was fitted with a holder for twin digital reversing thermometers mounted 1.38 m above the CTD temperature sensor.

Above the rosette was a PML 2pi PAR (photosynthetically available radiation) sensor pointing upwards to measure downwelling irradiance. A second 2pi PAR sensor, pointing downwards, was fitted to the bottom of the cage to measure upwelling irradiance. It should be noted that these sensors were vertically separated by 2 metres with the upwelling sensor 0.2 metres below the pressure head and the downwelling sensor 1.75 metres above it.

No account has been taken of rig geometry in the compilation of the CTD data set. However, all water bottle sampling depths have been corrected for rig geometry and represent the true position of the midpoint of the water bottle in the water column.

Data Acquisition

On each cast the CTD was lowered to a depth of approximately 5 metres and held until the oxygen reading stabilised. It was then raised to the surface and lowered continuously at 0.5 to 1.0 m s-1 to the closest comfortable proximity to the sea floor. The upcast was done in stages between the bottle firing depths.

Data were logged by the Research Vessel Services ABC data logging system. Output channels from the deck unit were logged at 16 Hz by a microprocessor interface (the Level A) which passed time stamped averaged cycles at 1Hz to a Sun workstation (the Level C) via a buffering system (the Level B).

On-Board Data Processing

The raw data comprised ADC counts. These were converted into engineering units (Volts for PAR meters, fluorometer and transmissometer; ml l-1for oxygen; mohms cm-1 for conductivity; °C for temperature; decibars for pressure) by the application of laboratory determined calibrations. Salinity (Practical Salinity Units as defined in Fofonoff and Millard,1983) was calculated from the conductivity ratios (conductivity / 42.914) and a time lagged temperature using the function described in UNESCO Report 37 (1981) .

The data were submitted to BODC in this form on Quarter Inch Cartridge tapes in RVS internal format for post-cruise processing and databanking.

Post-Cruise Processing

Reformatting

The data were converted into the BODC internal format (PXF) to allow the use of in-house software tools, notably the workstation graphics editor. In addition to reformatting, the transfer program applied the following modifications to the data:

attenuance = -4 * ln (percent transmittance / 100)

Editing

Reformatted CTD data were transferred onto a high speed graphics workstation. Using custom in-house graphics editors, downcasts and upcasts were differentiated and the limits of the downcasts and upcasts were manually flagged.

Secondly, spikes on all the downcast channels were manually flagged. No data values were edited or deleted; quality control was achieved by modification of the associated quality control flag.

The pressure ranges over which the bottle samples were being collected were logged by manual interaction with the software. Usually, the marked reaction of the oxygen sensor to the bottle firing sequence was used to determine this. These pressure ranges were subsequently used, in conjunction with a geometrical correction for the position of the water bottles with respect to the CTD pressure transducer, to determine the pressure range of data to be averaged for calibration values.

Once screened on the workstation, the CTD downcasts were loaded into a database under the ORACLE Relational DataBase Management System. The fluorometer was obviously malfunctioning on this cruise. The signal was noisy and baseline drift between casts exceeded the total signal. Consequently, all fluorometer data were flagged as suspect after loading into the database.

Calibration

With the exception of pressure, calibrations were done by comparison of CTD data against measurements made on water bottle samples or, for temperature, from the reversing thermometers mounted on the water bottles. In general, values were averaged from the CTD downcasts but where inspection on a graphics workstation showed significant hysteresis, values were manually extracted from the CTD upcasts.

All calibrations described here have been applied to the data.

Pressure

The pressure offset was determined by looking at the pressures recorded when the CTD was clearly logging in air (readily apparent from the conductivity channel). The offsets formed two distinct value clusters. Consequently two calibrations have been applied thus:

CTD1 to CTD25 Corrected pressure = Observed pressure + 1.47
CTD26 to CTD31 Corrected pressure = Observed pressure + 0.57
Temperature

The CTD temperature was compared with the digital reversing thermometers attached to the water bottles and was found to agree closely. Consequently, no correction has been applied to the temperature data.

Salinity

Salinity was calibrated against water bottle samples measured on the Guildline 55358 Autolab Salinometer during the cruise. Samples were randomly taken from the bottles fired on 28 casts.

Samples were collected in glass bottles filled to just below the neck and sealed with plastic stoppers. Batches of samples were left for at least 24 hours to reach thermal equilibrium in the constant temperature laboratory containing the salinometer before analysis.

The correction offset for this cruise was found to be 0.00 ± 0.002, hence no calibration was required.

Oxygen

The dissolved oxygen sensor was calibrated against Winkler titration data as a primary standard and calibrated data from the Endeco underway sensor as a secondary standard. The oxygen titrations were undertaken using an automated titration technique similar to that described in Williams and Jenkinson (1982).

The following calibration equation was determined by regression analysis:

Corrected Oxygen = Observed Oxygen + 206 (R2 = 50.8%, n=31)
Chlorophyll

The fluorometer malfunctioned on this cruise and consequently no CTD chlorophyll data are available. Users requiring chlorophyll data are referred to the water bottle and continuous underway data sets.

PAR

The light meter voltages were converted to µE/m2/s using the following equations determined by RVS in February 1990.

Downwelling PAR = exp (-4.977 * V + 7.0040) * 0.0375
Upwelling PAR = exp (-5.031* V + 6.8751) * 0.0375

Note that the scaling constant of 0.0375 is an empirical conversion from µW/cm2. The data may therefore be converted to W/m2 by dividing by 3.75 if required.

Suspended Particulate Matter

The attenuance data were calibrated in terms of suspended particulate material by regressing attenuance values at the bottle firing depths against gravimetric determinations of sediment load. Data from all three legs of CH108 were pooled to produce a single calibration.

The calibration obtained was:

Suspended particulate load = (attenuance + 0.8188) / 0.2286 (n=61; R2=81.0%)

It should be noted that the intercept of this calibration (-0.82) differs significantly from the theoretically predicted value of 0.37.

Data Reduction

Once all screening and calibration procedures were completed, the data set was binned to 2 db (casts deeper than 100 db) or 1 db (casts shallower than 100 db). The binning algorithm excluded any data points flagged suspect and attempted linear interpolation over gaps up to 3 bins wide. If any gaps larger than this were encountered, the data in the gaps were set null.

Oxygen saturation data in the database have been computed from the calibrated oxygen, temperature and salinity data using the algorithm of Benson and Krause (1984).

Data Warnings

There are no fluorometer data from this cruise.

The intercept of the transmissometer SPM calibration deviates significantly from the theoretically predicted value.

References

Benson B.B. and Krause D. jnr. 1984. The concentration and isotopic fractionation of oxygen dissolved in fresh water and sea water in equilibrium with the atmosphere. Limnol. Oceanogr. 29 pp.620.632.

Fofonoff N.P. and Millard Jr., R.C. 1982. Algorithms for Computation of Fundamental Properties of Seawater. UNESCO Technical Papers in Marine Science 44.

Williams P.J. leB, and Jenkinson N.W. 1982. A transportable microprocessor-controlled Winkler titration suitable for field station and shipboard use. Limnol.Oceanogr. 27 pp.567-585.


Project Information

Land Ocean Interaction Study (LOIS)

Introduction

The Land Ocean Interaction Study (LOIS) was a Community Research Project of the Natural Environment Research Council (NERC). The broad aim of LOIS was to gain an understanding of, and an ability to predict, the nature of environmental change in the coastal zone around the UK through an integrated study from the river catchments through to the shelf break.

LOIS was a collaborative, multidisciplinary study undertaken by scientists from NERC research laboratories and Higher Education institutions. The LOIS project was managed from NERC's Plymouth Marine Laboratory.

The project ran for six years from April 1992 until April 1998 with a further modelling and synthesis phase beginning in April 1998 and ending in April 2000.

Project Structure

LOIS consisted of the following components:

Marine Fieldwork

Marine field data were collected between September 1993 and September 1997 as part of RACS(C) and SES. The RACS data were collected throughout this period from the estuaries and coastal waters of the UK North Sea coast from Great Yarmouth to the Tweed. The SES data were collected between March 1995 and September 1996 from the Hebridean slope. Both the RACS and SES data sets incorporate a broad spectrum of measurements collected using moored instruments and research vessel surveys.


Data Activity or Cruise Information

Cruise

Cruise Name CH108C
Departure Date 1993-12-11
Arrival Date 1993-12-23
Principal Scientist(s)Geoff Millward (University of Plymouth Institute of Marine Studies)
Ship RRS Challenger

Complete Cruise Metadata Report is available here


Fixed Station Information

Fixed Station Information

Station NameLOIS (RACS) Humber-Tweed Grid HT
CategoryOffshore area
Latitude54° 47.47' N
Longitude0° 52.15' W
Water depth below MSL

LOIS (RACS) Humber-Tweed Grid HT

The Humber-Tweed grid was one of two areas sampled during the LOIS(RACS) project. The measurements collected lie within an area with its centre point at 54.7912N 0.8693W and which stretches from the Humber Estuary to Berwick upon Tweed.

BODC image

CTD casts were performed by several cruises between December 1992 and July 1995.

Related Fixed Station activities are detailed in Appendix 1


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
Q value below limit of quantification

Appendix 1: LOIS (RACS) Humber-Tweed Grid HT

Related series for this Fixed Station are presented in the table below. Further information can be found by following the appropriate links.

If you are interested in these series, please be aware we offer a multiple file download service. Should your credentials be insufficient for automatic download, the service also offers a referral to our Enquiries Officer who may be able to negotiate access.

Series IdentifierData CategoryStart date/timeStart positionCruise
832219CTD or STD cast1993-11-16 13:07:0054.03767 N, 0.304 ERRS Challenger CH108A
1285150Water sample data1993-11-16 13:11:0054.03767 N, 0.30401 ERRS Challenger CH108A
832220CTD or STD cast1993-11-16 14:45:0054.04633 N, 0.05167 WRRS Challenger CH108A
832373CTD or STD cast1993-11-16 16:23:0054.11883 N, 0.23917 ERRS Challenger CH108A
1285162Water sample data1993-11-16 16:26:0054.11879 N, 0.23922 ERRS Challenger CH108A
832232CTD or STD cast1993-11-16 18:35:0054.18983 N, 0.21633 WRRS Challenger CH108A
1285174Water sample data1993-11-16 18:38:0054.18977 N, 0.21631 WRRS Challenger CH108A
832244CTD or STD cast1993-11-17 01:14:0054.56583 N, 0.74683 WRRS Challenger CH108A
832385CTD or STD cast1993-11-17 02:57:0054.799 N, 0.5955 WRRS Challenger CH108A
832256CTD or STD cast1993-11-17 05:09:0054.63867 N, 1.02717 WRRS Challenger CH108A
832268CTD or STD cast1993-11-17 06:59:0054.87267 N, 0.83767 WRRS Challenger CH108A
832281CTD or STD cast1993-11-17 08:47:0054.69183 N, 1.122 WRRS Challenger CH108A
1285186Water sample data1993-11-17 08:50:0054.69185 N, 1.122 WRRS Challenger CH108A
831726CTD or STD cast1993-11-17 11:18:0055.0535 N, 0.91367 WRRS Challenger CH108A
1285198Water sample data1993-11-17 11:23:0055.05343 N, 0.91368 WRRS Challenger CH108A
831738CTD or STD cast1993-11-17 13:19:0054.93933 N, 1.28933 WRRS Challenger CH108A
1285205Water sample data1993-11-17 13:22:0054.93938 N, 1.28936 WRRS Challenger CH108A
831702CTD or STD cast1993-11-17 15:19:0055.114 N, 0.96383 WRRS Challenger CH108A
831911CTD or STD cast1993-11-17 17:17:0055.02317 N, 1.36283 WRRS Challenger CH108A
1285217Water sample data1993-11-17 17:19:0055.02322 N, 1.36282 WRRS Challenger CH108A
831923CTD or STD cast1993-11-17 19:18:0055.207 N, 1.02617 WRRS Challenger CH108A
831714CTD or STD cast1993-11-17 21:06:0055.20533 N, 1.44817 WRRS Challenger CH108A
1285229Water sample data1993-11-17 21:10:0055.20528 N, 1.44817 WRRS Challenger CH108A
831935CTD or STD cast1993-11-18 08:52:0055.774 N, 1.93633 WRRS Challenger CH108A
831947CTD or STD cast1993-11-18 12:36:0055.91633 N, 2.08383 WRRS Challenger CH108A
831959CTD or STD cast1993-11-18 13:46:0056.00083 N, 2.281 WRRS Challenger CH108A
1285230Water sample data1993-11-18 13:51:0056.00082 N, 2.28105 WRRS Challenger CH108A
831960CTD or STD cast1993-11-19 09:01:0054.75133 N, 0.20667 WRRS Challenger CH108A
1285254Water sample data1993-11-19 09:06:0054.75138 N, 0.20666 WRRS Challenger CH108A
832730CTD or STD cast1993-12-14 14:06:0054.03883 N, 0.05133 WRRS Challenger CH108C
832569CTD or STD cast1993-12-15 06:00:0054.56133 N, 0.74267 WRRS Challenger CH108C
832754CTD or STD cast1993-12-15 09:41:0054.8775 N, 0.844 WRRS Challenger CH108C
832570CTD or STD cast1993-12-15 11:42:0054.69167 N, 1.118 WRRS Challenger CH108C
832766CTD or STD cast1993-12-15 14:27:0055.04183 N, 0.91083 WRRS Challenger CH108C
832778CTD or STD cast1993-12-15 16:26:0054.937 N, 1.28383 WRRS Challenger CH108C
832791CTD or STD cast1993-12-15 18:36:0055.11617 N, 0.95567 WRRS Challenger CH108C
832582CTD or STD cast1993-12-15 20:36:0055.026 N, 1.356 WRRS Challenger CH108C
832809CTD or STD cast1993-12-15 22:31:0055.214 N, 1.02383 WRRS Challenger CH108C
832810CTD or STD cast1993-12-16 00:28:0055.203 N, 1.44383 WRRS Challenger CH108C
833444CTD or STD cast1994-10-12 15:10:0054.03733 N, 0.309 ERRS Challenger CH115A
833456CTD or STD cast1994-10-12 16:40:0054.04933 N, 0.04833 WRRS Challenger CH115A
834644CTD or STD cast1994-10-12 17:55:0054.12483 N, 0.23183 ERRS Challenger CH115A
835113CTD or STD cast1994-10-12 19:53:0054.19167 N, 0.2165 WRRS Challenger CH115A
833468CTD or STD cast1994-10-12 21:39:0054.38417 N, 0.04983 ERRS Challenger CH115A
834656CTD or STD cast1994-10-12 23:54:0054.39767 N, 0.43833 WRRS Challenger CH115A
833481CTD or STD cast1994-10-13 01:51:0054.643 N, 0.21767 WRRS Challenger CH115A
833493CTD or STD cast1994-10-13 04:36:0054.57183 N, 0.72233 WRRS Challenger CH115A
833500CTD or STD cast1994-10-13 06:37:0054.79967 N, 0.60067 WRRS Challenger CH115A
834668CTD or STD cast1994-10-13 09:27:0054.64417 N, 1.0305 WRRS Challenger CH115A
833512CTD or STD cast1994-10-13 10:25:0054.69033 N, 1.11717 WRRS Challenger CH115A
833524CTD or STD cast1994-10-13 14:47:0055.052 N, 0.91783 WRRS Challenger CH115A
834681CTD or STD cast1994-10-13 15:50:0055.08417 N, 1.04917 WRRS Challenger CH115A
833536CTD or STD cast1994-10-13 17:31:0055.0125 N, 1.36533 WRRS Challenger CH115A
833548CTD or STD cast1994-10-13 19:30:0055.208 N, 1.02217 WRRS Challenger CH115A
834693CTD or STD cast1994-10-13 21:28:0055.20567 N, 1.44517 WRRS Challenger CH115A
833561CTD or STD cast1994-10-13 23:15:0055.33883 N, 1.05383 WRRS Challenger CH115A
833573CTD or STD cast1994-10-14 01:25:0055.39 N, 1.50267 WRRS Challenger CH115A
833585CTD or STD cast1994-10-14 03:17:0055.49183 N, 1.06883 WRRS Challenger CH115A
833597CTD or STD cast1994-10-14 05:34:0055.5675 N, 1.55017 WRRS Challenger CH115A
833604CTD or STD cast1994-10-14 07:15:0055.75 N, 1.25 WRRS Challenger CH115A
834712CTD or STD cast1994-10-14 11:45:0055.7605 N, 1.93633 WRRS Challenger CH115A
833616CTD or STD cast1994-10-14 13:32:0055.91683 N, 1.58483 WRRS Challenger CH115A
833628CTD or STD cast1994-10-14 15:27:0055.917 N, 2.08167 WRRS Challenger CH115A
834724CTD or STD cast1994-10-14 16:33:0055.99933 N, 2.283 WRRS Challenger CH115A
833641CTD or STD cast1994-10-14 19:02:0056.00117 N, 1.60233 WRRS Challenger CH115A
833653CTD or STD cast1994-10-14 21:47:0055.70067 N, 1.05867 WRRS Challenger CH115A
833665CTD or STD cast1994-10-15 02:45:0054.88917 N, 0.74667 WRRS Challenger CH115A
834736CTD or STD cast1994-10-15 04:42:0054.75367 N, 0.31217 WRRS Challenger CH115A
835094CTD or STD cast1994-10-15 07:19:0054.524 N, 0.04167 ERRS Challenger CH115A
833167CTD or STD cast1994-10-15 11:23:0053.99883 N, 0.38533 ERRS Challenger CH115A
835334CTD or STD cast1994-10-23 19:35:0054.94733 N, 0.913 WRRS Challenger CH115B
835346CTD or STD cast1994-10-23 21:25:0054.93217 N, 1.31683 WRRS Challenger CH115B
835358CTD or STD cast1994-10-23 22:55:0055.08367 N, 1.04983 WRRS Challenger CH115B
835395CTD or STD cast1994-10-24 17:45:0055.20633 N, 1.02367 WRRS Challenger CH115B
836510CTD or STD cast1994-11-01 18:48:0053.866 N, 0.06483 ERRS Challenger CH115C
836257CTD or STD cast1994-11-01 21:23:0054.04917 N, 0.051 WRRS Challenger CH115C
836706CTD or STD cast1994-11-02 00:34:0054.19583 N, 0.18817 WRRS Challenger CH115C
836269CTD or STD cast1994-11-02 04:59:0054.395 N, 0.44183 WRRS Challenger CH115C
836522CTD or STD cast1994-11-02 09:23:0054.64367 N, 1.0365 WRRS Challenger CH115C
836270CTD or STD cast1994-11-02 11:32:0054.68967 N, 1.11883 WRRS Challenger CH115C
836282CTD or STD cast1994-11-02 15:13:0055.01367 N, 1.36783 WRRS Challenger CH115C
836534CTD or STD cast1994-11-02 19:43:0055.20933 N, 1.451 WRRS Challenger CH115C
836294CTD or STD cast1994-11-02 21:21:0055.393 N, 1.502 WRRS Challenger CH115C
836301CTD or STD cast1994-11-03 04:08:0055.76283 N, 1.92983 WRRS Challenger CH115C
835900CTD or STD cast1994-11-11 15:32:0054.04967 N, 0.04967 WRRS Challenger CH115C
835647CTD or STD cast1994-11-11 16:32:0054.04967 N, 0.04983 WRRS Challenger CH115C
835912CTD or STD cast1994-11-11 17:30:0054.0495 N, 0.0505 WRRS Challenger CH115C
835924CTD or STD cast1994-11-11 18:31:0054.05033 N, 0.0505 WRRS Challenger CH115C
835936CTD or STD cast1994-11-11 19:30:0054.04933 N, 0.05067 WRRS Challenger CH115C
835659CTD or STD cast1994-11-11 20:31:0054.04917 N, 0.049 WRRS Challenger CH115C
835948CTD or STD cast1994-11-11 21:33:0054.04967 N, 0.0495 WRRS Challenger CH115C
835961CTD or STD cast1994-11-11 22:30:0054.0505 N, 0.04917 WRRS Challenger CH115C
835660CTD or STD cast1994-11-11 23:31:0054.05133 N, 0.05033 WRRS Challenger CH115C
835973CTD or STD cast1994-11-12 00:29:0054.0505 N, 0.05067 WRRS Challenger CH115C
835985CTD or STD cast1994-11-12 01:29:0054.0505 N, 0.04933 WRRS Challenger CH115C
835672CTD or STD cast1994-11-12 02:30:0054.05067 N, 0.04933 WRRS Challenger CH115C
835997CTD or STD cast1994-11-12 03:31:0054.05117 N, 0.04867 WRRS Challenger CH115C
835518CTD or STD cast1994-11-12 04:31:0054.05 N, 0.05017 WRRS Challenger CH115C
835531CTD or STD cast1994-11-12 05:32:0054.05017 N, 0.051 WRRS Challenger CH115C
836792CTD or STD cast1995-01-23 07:00:0053.74567 N, 0.41233 ERRS Challenger CH117A
837630CTD or STD cast1995-01-23 09:39:0053.84033 N, 0.02133 ERRS Challenger CH117A
837642CTD or STD cast1995-01-23 12:13:0054.0495 N, 0.05067 WRRS Challenger CH117A
837654CTD or STD cast1995-01-23 14:00:0054.19733 N, 0.19017 WRRS Challenger CH117A
836811CTD or STD cast1995-01-23 16:16:0054.38883 N, 0.4475 WRRS Challenger CH117A
837666CTD or STD cast1995-01-23 18:48:0054.5555 N, 0.7335 WRRS Challenger CH117A
837678CTD or STD cast1995-01-23 20:54:0054.641 N, 1.02917 WRRS Challenger CH117A
836823CTD or STD cast1995-01-23 22:16:0054.69217 N, 1.11933 WRRS Challenger CH117A
837691CTD or STD cast1995-01-24 00:30:0054.93217 N, 1.31683 WRRS Challenger CH117A
837709CTD or STD cast1995-01-24 01:38:0055.01317 N, 1.36533 WRRS Challenger CH117A
836835CTD or STD cast1995-01-24 03:21:0055.20817 N, 1.45067 WRRS Challenger CH117A
837710CTD or STD cast1995-01-24 05:07:0055.392 N, 1.502 WRRS Challenger CH117A
837722CTD or STD cast1995-01-24 07:14:0055.489 N, 1.063 WRRS Challenger CH117A
836847CTD or STD cast1995-01-24 09:53:0055.56483 N, 1.552 WRRS Challenger CH117A
837734CTD or STD cast1995-01-24 12:40:0055.761 N, 1.93217 WRRS Challenger CH117A
837193CTD or STD cast1995-01-24 15:03:0055.99983 N, 1.5995 WRRS Challenger CH117A
837200CTD or STD cast1995-01-24 22:51:0055.01183 N, 1.3655 WRRS Challenger CH117A
837212CTD or STD cast1995-01-25 03:51:0054.69017 N, 1.12017 WRRS Challenger CH117A
838080CTD or STD cast1995-01-31 15:42:0055.07717 N, 1.04667 WRRS Challenger CH117B
838092CTD or STD cast1995-01-31 18:56:0055.2075 N, 1.03083 WRRS Challenger CH117B
838111CTD or STD cast1995-01-31 22:27:0055.34433 N, 1.05433 WRRS Challenger CH117B
838909CTD or STD cast1995-04-05 05:41:0054.04867 N, 0.0715 WRRS Challenger CH118A
838910CTD or STD cast1995-04-05 07:13:0054.11883 N, 0.243 ERRS Challenger CH118A
838922CTD or STD cast1995-04-05 09:28:0054.1875 N, 0.22017 WRRS Challenger CH118A
838701CTD or STD cast1995-04-05 11:14:0054.3845 N, 0.05083 ERRS Challenger CH118A
838461CTD or STD cast1995-04-05 13:28:0054.39217 N, 0.42217 WRRS Challenger CH118A
838934CTD or STD cast1995-04-05 15:18:0054.64083 N, 0.22133 WRRS Challenger CH118A
838946CTD or STD cast1995-04-05 17:59:0054.5565 N, 0.71817 WRRS Challenger CH118A
838473CTD or STD cast1995-04-05 20:04:0054.79833 N, 0.60017 WRRS Challenger CH118A
838958CTD or STD cast1995-04-05 22:18:0054.6895 N, 1.12083 WRRS Challenger CH118A
838971CTD or STD cast1995-04-06 04:08:0054.931 N, 1.30767 WRRS Challenger CH118A
838485CTD or STD cast1995-04-06 05:48:0055.0815 N, 1.0505 WRRS Challenger CH118A
838983CTD or STD cast1995-04-06 07:19:0055.0125 N, 1.36617 WRRS Challenger CH118A
838995CTD or STD cast1995-04-06 10:05:0055.213 N, 1.02283 WRRS Challenger CH118A
839009CTD or STD cast1995-04-06 15:02:0055.20783 N, 1.446 WRRS Challenger CH118A
838713CTD or STD cast1995-04-06 16:45:0055.33983 N, 1.05833 WRRS Challenger CH118A
838497CTD or STD cast1995-04-06 18:43:0055.388 N, 1.4885 WRRS Challenger CH118A
838504CTD or STD cast1995-04-06 20:29:0055.49067 N, 1.0665 WRRS Challenger CH118A
838516CTD or STD cast1995-04-06 22:34:0055.56617 N, 1.54967 WRRS Challenger CH118A
838528CTD or STD cast1995-04-07 04:10:0055.9115 N, 1.58717 WRRS Challenger CH118A
838541CTD or STD cast1995-04-07 06:13:0055.9125 N, 2.076 WRRS Challenger CH118A
838553CTD or STD cast1995-04-07 07:28:0055.99617 N, 2.285 WRRS Challenger CH118A
838565CTD or STD cast1995-04-07 09:57:0055.998 N, 1.59933 WRRS Challenger CH118A
838577CTD or STD cast1995-04-07 12:45:0055.7 N, 1.06383 WRRS Challenger CH118A
838589CTD or STD cast1995-04-07 18:00:0054.89517 N, 0.7445 WRRS Challenger CH118A
838590CTD or STD cast1995-04-07 20:06:0054.74983 N, 0.30167 WRRS Challenger CH118A
838608CTD or STD cast1995-04-07 22:23:0054.52383 N, 0.0395 ERRS Challenger CH118A
838621CTD or STD cast1995-04-08 04:08:0054.128 N, 0.22683 ERRS Challenger CH118A
838670CTD or STD cast1995-04-10 04:14:0054.69933 N, 1.10733 WRRS Challenger CH118A
839998CTD or STD cast1995-04-18 07:25:0053.74967 N, 0.40683 ERRS Challenger CH118B
840011CTD or STD cast1995-04-18 09:40:0053.8675 N, 0.064 ERRS Challenger CH118B
840023CTD or STD cast1995-04-18 11:55:0054.0385 N, 0.30233 ERRS Challenger CH118B
840035CTD or STD cast1995-04-18 14:17:0054.04933 N, 0.051 WRRS Challenger CH118B
840397CTD or STD cast1995-04-18 16:11:0054.12383 N, 0.23117 ERRS Challenger CH118B
840047CTD or STD cast1995-04-18 18:51:0054.19883 N, 0.18383 WRRS Challenger CH118B
840059CTD or STD cast1995-04-18 20:54:0054.38317 N, 0.04867 ERRS Challenger CH118B
839034CTD or STD cast1995-04-18 23:17:0054.3975 N, 0.41883 WRRS Challenger CH118B
840060CTD or STD cast1995-04-19 01:33:0054.6425 N, 0.2195 WRRS Challenger CH118B
840404CTD or STD cast1995-04-19 03:58:0054.56533 N, 0.693 WRRS Challenger CH118B
840072CTD or STD cast1995-04-19 06:19:0054.797 N, 0.5985 WRRS Challenger CH118B
840084CTD or STD cast1995-04-19 08:37:0054.653 N, 1.01517 WRRS Challenger CH118B
840416CTD or STD cast1995-04-19 11:09:0054.87783 N, 0.84983 WRRS Challenger CH118B
840096CTD or STD cast1995-04-19 13:37:0054.68967 N, 1.12 WRRS Challenger CH118B
839821CTD or STD cast1995-04-19 16:05:0054.95183 N, 0.912 WRRS Challenger CH118B
839833CTD or STD cast1995-04-19 18:12:0054.9335 N, 1.29683 WRRS Challenger CH118B
839845CTD or STD cast1995-04-19 20:14:0055.085 N, 1.05017 WRRS Challenger CH118B
839857CTD or STD cast1995-04-19 22:28:0055.01317 N, 1.36417 WRRS Challenger CH118B
839869CTD or STD cast1995-04-20 01:05:0055.20967 N, 1.02667 WRRS Challenger CH118B
840348CTD or STD cast1995-04-20 03:23:0055.20717 N, 1.449 WRRS Challenger CH118B
839870CTD or STD cast1995-04-20 05:35:0055.34083 N, 1.05867 WRRS Challenger CH118B
840361CTD or STD cast1995-04-20 08:00:0055.3925 N, 1.49717 WRRS Challenger CH118B
839882CTD or STD cast1995-04-20 10:16:0055.49267 N, 1.06667 WRRS Challenger CH118B
839894CTD or STD cast1995-04-20 12:44:0055.56983 N, 1.54983 WRRS Challenger CH118B
839022CTD or STD cast1995-04-20 14:59:0055.75133 N, 1.25167 WRRS Challenger CH118B
839901CTD or STD cast1995-04-20 18:06:0055.761 N, 1.90917 WRRS Challenger CH118B
839913CTD or STD cast1995-04-20 20:18:0055.9175 N, 1.58183 WRRS Challenger CH118B
839925CTD or STD cast1995-04-20 23:04:0055.9155 N, 2.08317 WRRS Challenger CH118B
840373CTD or STD cast1995-04-21 00:35:0055.99917 N, 2.28267 WRRS Challenger CH118B
839937CTD or STD cast1995-04-21 03:34:0055.99783 N, 1.60083 WRRS Challenger CH118B
839949CTD or STD cast1995-04-21 07:05:0055.69867 N, 1.0605 WRRS Challenger CH118B
840115CTD or STD cast1995-04-21 15:44:0054.8925 N, 0.75083 WRRS Challenger CH118B
839384CTD or STD cast1995-04-21 18:07:0054.74867 N, 0.29717 WRRS Challenger CH118B
839396CTD or STD cast1995-04-21 20:20:0054.523 N, 0.0435 ERRS Challenger CH118B
840127CTD or STD cast1995-04-22 00:01:0054.002 N, 0.388 ERRS Challenger CH118B
840662CTD or STD cast1995-04-29 16:32:0055.2085 N, 1.01917 WRRS Challenger CH118C
840742CTD or STD cast1995-04-29 20:04:0055.34383 N, 1.06117 WRRS Challenger CH118C
840766CTD or STD cast1995-04-30 19:24:0055.08517 N, 1.04233 WRRS Challenger CH118C
840674CTD or STD cast1995-04-30 22:35:0054.953 N, 0.91517 WRRS Challenger CH118C
840686CTD or STD cast1995-05-02 13:43:0055.49083 N, 1.06267 WRRS Challenger CH118C
840809CTD or STD cast1995-05-02 17:25:0055.748 N, 1.24533 WRRS Challenger CH118C
840810CTD or STD cast1995-05-02 21:37:0055.9155 N, 1.58217 WRRS Challenger CH118C
840834CTD or STD cast1995-05-03 17:43:0056.00067 N, 1.59617 WRRS Challenger CH118C
840846CTD or STD cast1995-05-03 20:24:0055.69967 N, 1.05067 WRRS Challenger CH118C
840871CTD or STD cast1995-05-04 14:37:0054.89317 N, 0.74733 WRRS Challenger CH118C
840428CTD or STD cast1995-05-04 16:44:0054.75167 N, 0.3005 WRRS Challenger CH118C
840883CTD or STD cast1995-05-04 18:42:0054.52483 N, 0.047 ERRS Challenger CH118C
840895CTD or STD cast1995-05-04 21:55:0053.9975 N, 0.38433 ERRS Challenger CH118C
840569CTD or STD cast1995-05-10 07:38:0053.7525 N, 0.40617 ERRS Challenger CH118C
840570CTD or STD cast1995-05-10 09:11:0053.8625 N, 0.06567 ERRS Challenger CH118C
840582CTD or STD cast1995-05-10 12:04:0054.051 N, 0.04517 WRRS Challenger CH118C
840594CTD or STD cast1995-05-10 13:25:0054.12467 N, 0.2345 ERRS Challenger CH118C
840601CTD or STD cast1995-05-10 16:49:0054.38417 N, 0.04833 ERRS Challenger CH118C
840613CTD or STD cast1995-05-10 18:40:0054.397 N, 0.4255 WRRS Challenger CH118C
840625CTD or STD cast1995-05-10 22:36:0054.5605 N, 0.73067 WRRS Challenger CH118C
841536CTD or STD cast1995-06-10 08:08:0055.74567 N, 1.25133 WRRS Challenger CH119A
841794CTD or STD cast1995-06-10 11:10:0055.75933 N, 1.933 WRRS Challenger CH119A
841801CTD or STD cast1995-06-10 13:34:0055.91433 N, 1.5805 WRRS Challenger CH119A
841296CTD or STD cast1995-06-10 16:10:0055.56817 N, 1.54967 WRRS Challenger CH119A
841303CTD or STD cast1995-06-10 18:33:0055.49383 N, 1.07 WRRS Challenger CH119A
841315CTD or STD cast1995-06-10 20:48:0055.39217 N, 1.49333 WRRS Challenger CH119A
841327CTD or STD cast1995-06-10 22:51:0055.33967 N, 1.06433 WRRS Challenger CH119A
841339CTD or STD cast1995-06-11 01:05:0055.2055 N, 1.451 WRRS Challenger CH119A
841340CTD or STD cast1995-06-11 03:06:0055.20583 N, 1.0305 WRRS Challenger CH119A
841352CTD or STD cast1995-06-11 05:16:0055.01367 N, 1.3655 WRRS Challenger CH119A
841364CTD or STD cast1995-06-11 07:03:0055.0855 N, 1.05183 WRRS Challenger CH119A
841376CTD or STD cast1995-06-11 08:58:0054.933 N, 1.31433 WRRS Challenger CH119A
841388CTD or STD cast1995-06-11 10:35:0054.946 N, 0.91983 WRRS Challenger CH119A
841407CTD or STD cast1995-06-11 12:43:0054.687 N, 1.1215 WRRS Challenger CH119A
841419CTD or STD cast1995-06-11 13:48:0054.65067 N, 0.99983 WRRS Challenger CH119A
841849CTD or STD cast1995-06-15 18:33:0055.08383 N, 1.04883 WRRS Challenger CH119B
841850CTD or STD cast1995-06-15 21:47:0054.948 N, 0.922 WRRS Challenger CH119B
841862CTD or STD cast1995-06-16 19:30:0055.2055 N, 1.02617 WRRS Challenger CH119B
841874CTD or STD cast1995-06-16 21:25:0055.20833 N, 1.446 WRRS Challenger CH119B
842017CTD or STD cast1995-06-16 23:17:0055.3435 N, 1.05667 WRRS Challenger CH119B
842472CTD or STD cast1995-06-18 18:48:0054.8735 N, 0.837 WRRS Challenger CH119B
842355CTD or STD cast1995-06-18 22:37:0054.79833 N, 0.59967 WRRS Challenger CH119B
841886CTD or STD cast1995-06-19 11:11:0055.39433 N, 1.5 WRRS Challenger CH119B
841930CTD or STD cast1995-06-19 13:16:0055.49417 N, 1.06667 WRRS Challenger CH119B
841898CTD or STD cast1995-06-19 16:37:0055.752 N, 1.2495 WRRS Challenger CH119B
841905CTD or STD cast1995-06-19 20:44:0055.91467 N, 1.58117 WRRS Challenger CH119B
841917CTD or STD cast1995-06-20 12:39:0055.91667 N, 2.08517 WRRS Challenger CH119B
841929CTD or STD cast1995-06-20 13:59:0055.9995 N, 2.2835 WRRS Challenger CH119B
841954CTD or STD cast1995-06-20 16:39:0056.001 N, 1.59883 WRRS Challenger CH119B
842066CTD or STD cast1995-06-20 19:32:0055.6985 N, 1.058 WRRS Challenger CH119B
842091CTD or STD cast1995-06-21 10:40:0054.889 N, 0.74783 WRRS Challenger CH119B
841966CTD or STD cast1995-06-21 12:43:0054.75 N, 0.29667 WRRS Challenger CH119B
842318CTD or STD cast1995-06-22 17:53:0054.001 N, 0.3815 ERRS Challenger CH119B
842183CTD or STD cast1995-06-27 06:21:0054.38167 N, 0.0535 ERRS Challenger CH119B
841978CTD or STD cast1995-06-27 10:13:0054.64117 N, 0.2205 WRRS Challenger CH119B
842195CTD or STD cast1995-06-27 12:23:0054.57767 N, 0.72117 WRRS Challenger CH119B
842029CTD or STD cast1995-06-27 17:03:0054.52267 N, 0.0465 ERRS Challenger CH119B
842030CTD or STD cast1995-06-27 22:05:0053.86367 N, 0.0655 ERRS Challenger CH119B
842042CTD or STD cast1995-06-28 00:16:0053.75067 N, 0.40567 ERRS Challenger CH119B
842515CTD or STD cast1995-07-03 20:32:0054.051 N, 0.05333 WRRS Challenger CH119C
842527CTD or STD cast1995-07-03 22:26:0054.1245 N, 0.23533 ERRS Challenger CH119C
842539CTD or STD cast1995-07-04 00:41:0054.20083 N, 0.1545 WRRS Challenger CH119C
843727CTD or STD cast1995-07-04 02:44:0054.38367 N, 0.04983 ERRS Challenger CH119C
842540CTD or STD cast1995-07-04 05:11:0054.392 N, 0.42083 WRRS Challenger CH119C
842552CTD or STD cast1995-07-04 07:51:0054.63867 N, 0.211 WRRS Challenger CH119C
843739CTD or STD cast1995-07-04 10:43:0054.5595 N, 0.73833 WRRS Challenger CH119C
842564CTD or STD cast1995-07-04 13:22:0054.80083 N, 0.6035 WRRS Challenger CH119C
843021CTD or STD cast1995-07-04 15:57:0054.641 N, 1.03283 WRRS Challenger CH119C
843033CTD or STD cast1995-07-04 18:08:0054.87467 N, 0.84083 WRRS Challenger CH119C
843045CTD or STD cast1995-07-04 20:23:0054.6895 N, 1.11967 WRRS Challenger CH119C
843057CTD or STD cast1995-07-04 22:54:0054.948 N, 0.91783 WRRS Challenger CH119C
843069CTD or STD cast1995-07-05 01:07:0054.93417 N, 1.31683 WRRS Challenger CH119C
843684CTD or STD cast1995-07-05 03:11:0055.08383 N, 1.05167 WRRS Challenger CH119C
843070CTD or STD cast1995-07-05 05:22:0055.01233 N, 1.366 WRRS Challenger CH119C
843082CTD or STD cast1995-07-05 07:43:0055.20917 N, 1.02067 WRRS Challenger CH119C
843696CTD or STD cast1995-07-05 10:29:0055.20867 N, 1.42517 WRRS Challenger CH119C
843094CTD or STD cast1995-07-05 12:41:0055.34233 N, 1.05767 WRRS Challenger CH119C
843101CTD or STD cast1995-07-05 15:19:0055.39317 N, 1.49883 WRRS Challenger CH119C
843113CTD or STD cast1995-07-05 17:36:0055.491 N, 1.0675 WRRS Challenger CH119C
843217CTD or STD cast1995-07-05 20:18:0055.56467 N, 1.54767 WRRS Challenger CH119C
843125CTD or STD cast1995-07-05 22:40:0055.74867 N, 1.24733 WRRS Challenger CH119C
843137CTD or STD cast1995-07-06 01:58:0055.76317 N, 1.93283 WRRS Challenger CH119C
842619CTD or STD cast1995-07-06 04:04:0055.91667 N, 1.58483 WRRS Challenger CH119C
843149CTD or STD cast1995-07-06 06:54:0055.91583 N, 2.08133 WRRS Challenger CH119C
843150CTD or STD cast1995-07-06 08:41:0055.99917 N, 2.27967 WRRS Challenger CH119C
842620CTD or STD cast1995-07-06 11:42:0055.99983 N, 1.598 WRRS Challenger CH119C
843162CTD or STD cast1995-07-07 02:04:0054.124 N, 0.233 ERRS Challenger CH119C