*2019/08/26 15:30:31.91 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/02 18:21:56.000 END TIME : UTC 2017/03/02 18:22:08.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 63 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.63 2 Depth metres 0.15 18.6 3 Temperature 'deg C (ITS90)' 7.279 7.518 4 Conductivity S/m 2.74134 2.81878 5 Conductance:Specific S/m 4.24547 4.3342 6 Salinity PSS-78 26.26 26.89 7 Speed:Sound m/s 1468.87 1470.87 8 Density kg/m^3 1020.507 1021.058 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 7 F R4 2 2 -99 ' ' 7 F R4 2 3 -99 ' ' 8 F R4 3 4 -99 ' ' 10 F R4 5 5 -99 ' ' 10 F R4 5 6 -99 ' ' 7 F R4 2 7 -99 ' ' 8 F R4 2 8 -99 ' ' 9 F R4 3 $END *ADMINISTRATION MISSION : 2017-98 AGENCY : Canadian Hydrographic Service COUNTRY : Canada PROJECT : CHS CTD Data Acquisition SCIENTIST : Dangerfield N. *LOCATION EVENT NUMBER : 306 LATITUDE : 49 18.04472 N ! (deg min) LONGITUDE : 123 3.68609 W ! (deg min) *INSTRUMENT TYPE : SonTek CTD MODEL : CastAway SERIAL NUMBER : CC1545005 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------- ------ ---------- -------- --------- --------- READ_CHS_CTDS 1.0 2017/12/08 20:58:38 63 63 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:31 63 63 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:58:38 -HEADER EDITS: 2017/12/13 11:33:17 Applied edit header: P:\Cruise_Data_Processing\CHS_data\test\Docs\CHS-ref-HDR.TXT Channel 1: Pressure [decibar] Format: F10.3 ==> F7.2 Channel 2: Depth [metres] Format: F10.3 ==> F7.2 Channel 3: Temperature [deg C (ITS90)] Format: F10.3 ==> F8.3 Channel 4: Conductivity [mS/cm] Format: F10.3 ==> F9.1 Channel 6: Salinity [PSS-78] Format: F10.3 ==> F7.2 Channel 8: Density [kg/m^3] Format: F10.3 ==> F9.3 Channel 5: Conductance:Specific [mS/cm] Format: F10.3 ==> F9.1 Channel 7: Speed:Sound [m/s] Format: F10.3 ==> F8.2 -CALIB parameters: 2019/08/26 15:30:31 Calibration type = Correct Mode: ONLY - calibration specs from Cal File only. Calibration file = Q:\OSD_DataProcessing\Cruise_data\conductivity-corrections\recal-cond.CCF Calibrations applied: Ch Name Units Fmla Coefficents -- ----------------------------- --------- --- ----------------------------- 4 Conductivity S/m 10 0.0000000E+00 0.1000000E-03 5 Conductance:Specific S/m 10 0.0000000E+00 0.1000000E-03 $END *COMMENTS Data Processing Notes: The CastAway-CTD is a small profiling instrument that measures conductivity, temperature, and pressure. Its embedded firmware controls all of the instrument's functions. It is designed for profiling to depths of up to 100m at 5 Hz. It uses a six electrode flow-through conductivity cell with zero external field coupled with a rapid response thermistor (<5Hz) to attain high measurement accuracies. The instrument does not require a pump and is hydrodynamically designed to free fall rate of 1 m/s. Processing was done using the CastAway CTD data processing system which included the following steps: - Pressure correction to remove ambient atmospheric pressure. - Removal of records obtained while the system was stationary. - De-spiking of conductivity data to remove erratic measurements near the water surface that can be caused by air bubbles trapped in the conductivity flow cell. - Bin-averaging with 0.3db bins with linear interpolation used to fill empty bins or the nearest available value for surface or bottom bins. - Combination of downcast and upcast data using a weighted average based on fall velocity. - Derivation of specific conductance, salinity, sound speed, density and depth for each pressure bin. The data were converted to IOS Header format and some quality control checks were made. Resolution and Accuracy as stated by the manufacturer is: Channel Resolution Accuracy Pressure 0.01 db 0.25 db Depth 0.01 m 0.25 m Temperature 0.01 degrees C 0.05 degrees C Conductivity 1 mS/cm 5 mS/cm Conductance:Specific 1 mS/cm 5 mS/cm Salinity 0.01 (PSS-78) 0.1 (PSS-78) Speed:Sound 0.01 m/s 0.15 m/s Density 0.004 kg/m3 0.02 kg/m3 GPS 10m Density is derived based on temperature resolution and accuracy using the International Equation of State for sea water (EOS-80). Depth and Specific Conductance are derived using the International Equation of State for sea water (EOS-80). Salinity was calculated using the 1978 Practical Salinity Scale. Sound Speed was calculated using the method of Chen-Millero, 1977. Original data file header: % Device,CC1545005 % File name,CC1545005_20170302_182156 % Cast time (UTC),2017-03-02 18:21:56 % Cast time (local),2017-03-02 18:21:56 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3007454 % Start longitude,-123.0614348 % Start altitude,-17.040000915527344 % Start GPS horizontal error(Meter),2.619999885559082 % Start GPS vertical error(Meter),3.6800000667572021 % Start GPS number of satellites,6 % End latitude,49.3009433 % End longitude,-123.0616366 % End altitude,-11.850000381469727 % End GPS horizontal error(Meter),8.2700004577636719 % End GPS vertical error(Meter),9.7600002288818359 % End GPS number of satellites,5 % Cast duration (Seconds),57.4 % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2015-11-20 % Temperature calibration date,2015-11-19 % Pressure calibration date,2015-11-17 % For more information about the CastAway CTD see document "CastAway CTD Principles of Operation.pdf”. *CALIBRATION $TABLE: CORRECTED CHANNELS ! Name Units Fmla Pad Coefficients ! ---------------------- ----- ---- ------ ------------ Conductivity S/m 10 -99 () (0 0.1E-03) Conductance:Specific S/m 10 -99 () (0 0.1E-03) $END !--1--- --2--- ---3--- ----4---- ----5---- --6--- ---7--- ---8---- !Pressu Depth Tempera Conductiv Conductan Salini Speed: Density !re ture ity ce: ty Sound ! Specific !------ ------ ------- --------- --------- ------ ------- -------- *END OF HEADER 0.15 0.15 7.288 2.74154 4.24547 26.26 1468.88 1020.507 0.45 0.45 7.284 2.74134 4.24565 26.26 1468.87 1020.509 0.75 0.75 7.281 2.74300 4.24861 26.28 1468.89 1020.526 1.05 1.05 7.279 2.74360 4.24981 26.29 1468.90 1020.534 1.35 1.35 7.280 2.74367 4.24981 26.29 1468.90 1020.535 1.65 1.65 7.279 2.74405 4.25046 26.29 1468.91 1020.540 1.95 1.95 7.279 2.74434 4.25101 26.29 1468.92 1020.544 2.25 2.25 7.279 2.74547 4.25274 26.30 1468.94 1020.555 2.55 2.55 7.284 2.74770 4.25558 26.32 1468.99 1020.571 2.85 2.85 7.288 2.75085 4.25988 26.35 1469.05 1020.596 3.15 3.15 7.293 2.75376 4.26366 26.38 1469.11 1020.617 3.45 3.45 7.299 2.75659 4.26733 26.41 1469.16 1020.638 3.75 3.75 7.306 2.75774 4.26812 26.41 1469.21 1020.643 4.05 4.04 7.316 2.75951 4.26960 26.42 1469.26 1020.652 4.35 4.34 7.324 2.76145 4.27157 26.44 1469.32 1020.664 4.65 4.64 7.330 2.76225 4.27201 26.44 1469.35 1020.668 4.95 4.94 7.335 2.76372 4.27351 26.45 1469.39 1020.677 5.25 5.24 7.343 2.76440 4.27361 26.45 1469.43 1020.679 5.55 5.54 7.349 2.76456 4.27295 26.45 1469.45 1020.676 5.85 5.84 7.354 2.76521 4.27332 26.45 1469.48 1020.679 6.15 6.14 7.361 2.76669 4.27477 26.46 1469.52 1020.688 6.45 6.44 7.369 2.76750 4.27488 26.47 1469.57 1020.690 6.75 6.74 7.375 2.76936 4.27700 26.48 1469.61 1020.703 7.05 7.04 7.380 2.77041 4.27802 26.49 1469.64 1020.709 7.35 7.34 7.385 2.77112 4.27845 26.49 1469.67 1020.713 7.65 7.64 7.390 2.77290 4.28050 26.51 1469.72 1020.725 7.95 7.94 7.397 2.77456 4.28212 26.52 1469.76 1020.735 8.25 8.24 7.407 2.77586 4.28284 26.52 1469.81 1020.740 8.55 8.54 7.414 2.77712 4.28377 26.53 1469.86 1020.746 8.85 8.84 7.419 2.77793 4.28436 26.54 1469.89 1020.750 9.15 9.14 7.424 2.77991 4.28686 26.55 1469.93 1020.765 9.45 9.44 7.429 2.78328 4.29139 26.59 1469.99 1020.790 9.75 9.74 7.434 2.78490 4.29318 26.60 1470.04 1020.801 10.05 10.04 7.438 2.78522 4.29315 26.60 1470.06 1020.802 10.35 10.34 7.441 2.78551 4.29322 26.60 1470.07 1020.804 10.65 10.64 7.440 2.78531 4.29297 26.60 1470.08 1020.804 10.95 10.94 7.442 2.78566 4.29332 26.60 1470.09 1020.807 11.25 11.24 7.443 2.78620 4.29394 26.60 1470.11 1020.812 11.55 11.54 7.445 2.78589 4.29329 26.60 1470.11 1020.810 11.85 11.84 7.445 2.78553 4.29277 26.60 1470.11 1020.808 12.15 12.13 7.446 2.78588 4.29308 26.60 1470.12 1020.811 12.45 12.43 7.448 2.78616 4.29326 26.60 1470.14 1020.813 12.75 12.73 7.449 2.78660 4.29383 26.60 1470.15 1020.818 13.05 13.03 7.451 2.78624 4.29305 26.60 1470.16 1020.815 13.35 13.33 7.453 2.78641 4.29300 26.60 1470.17 1020.816 13.65 13.63 7.457 2.78842 4.29561 26.62 1470.21 1020.831 13.95 13.93 7.458 2.78947 4.29700 26.63 1470.23 1020.840 14.25 14.23 7.460 2.79056 4.29843 26.64 1470.26 1020.848 14.55 14.53 7.464 2.79178 4.29980 26.64 1470.29 1020.857 14.85 14.83 7.466 2.79251 4.30063 26.65 1470.31 1020.863 15.15 15.13 7.471 2.79217 4.29950 26.64 1470.33 1020.858 15.45 15.43 7.476 2.79370 4.30123 26.66 1470.37 1020.868 15.75 15.73 7.478 2.79467 4.30242 26.66 1470.39 1020.876 16.05 16.03 7.482 2.79662 4.30495 26.68 1470.43 1020.891 16.35 16.33 7.484 2.79946 4.30899 26.71 1470.48 1020.914 16.65 16.63 7.484 2.80188 4.31268 26.73 1470.52 1020.935 16.95 16.93 7.483 2.80383 4.31583 26.76 1470.54 1020.953 17.25 17.23 7.486 2.80585 4.31850 26.77 1470.58 1020.968 17.55 17.53 7.490 2.80922 4.32319 26.81 1470.64 1020.995 17.85 17.83 7.498 2.81444 4.33022 26.86 1470.74 1021.034 18.15 18.12 7.508 2.81562 4.33069 26.86 1470.79 1021.037 18.45 18.43 7.513 2.81516 4.32926 26.85 1470.80 1021.031 18.63 18.60 7.518 2.81878 4.33420 26.89 1470.87 1021.058