*2019/08/26 15:30:31.75 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/02 18:08:21.000 END TIME : UTC 2017/03/02 18:08:39.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 93 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 27.81 2 Depth metres 0.15 27.76 3 Temperature 'deg C (ITS90)' 7.275 7.598 4 Conductivity S/m 2.75868 2.86877 5 Conductance:Specific S/m 4.27322 4.40045 6 Salinity PSS-78 26.44 27.35 7 Speed:Sound m/s 1469.07 1471.9 8 Density kg/m^3 1020.657 1021.45 $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 : 303 LATITUDE : 49 18.18431 N ! (deg min) LONGITUDE : 123 4.97275 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 20:55:39 93 93 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:31 93 93 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:55:38 -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_180821 % Cast time (UTC),2017-03-02 18:08:21 % Cast time (local),2017-03-02 18:08:21 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3030719 % Start longitude,-123.0828792 % Start altitude,-12.979999542236328 % Start GPS horizontal error(Meter),5.21999979019165 % Start GPS vertical error(Meter),7.1500000953674316 % Start GPS number of satellites,6 % End latitude,49.303235 % End longitude,-123.0831986 % End altitude,-17.450000762939453 % End GPS horizontal error(Meter),6.2399997711181641 % End GPS vertical error(Meter),9.1099996566772461 % End GPS number of satellites,6 % Cast duration (Seconds),78.2 % 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 7.275 2.75874 4.27378 26.45 1469.07 1020.658 0.45 0.45 7.279 2.75868 4.27322 26.44 1469.08 1020.657 0.75 0.75 7.289 2.76098 4.27542 26.46 1469.15 1020.669 1.05 1.05 7.302 2.76467 4.27943 26.49 1469.24 1020.692 1.35 1.35 7.314 2.76824 4.28338 26.52 1469.33 1020.714 1.65 1.65 7.323 2.77356 4.29042 26.57 1469.43 1020.753 1.95 1.95 7.324 2.77884 4.29842 26.62 1469.51 1020.797 2.25 2.25 7.326 2.78184 4.30284 26.65 1469.56 1020.822 2.55 2.55 7.332 2.78552 4.30768 26.69 1469.63 1020.849 2.85 2.85 7.341 2.78734 4.30935 26.70 1469.68 1020.859 3.15 3.15 7.348 2.78775 4.30895 26.70 1469.71 1020.858 3.45 3.44 7.355 2.78885 4.30976 26.70 1469.75 1020.864 3.75 3.75 7.362 2.79098 4.31216 26.72 1469.81 1020.878 4.05 4.04 7.370 2.79191 4.31254 26.72 1469.85 1020.881 4.35 4.34 7.378 2.79389 4.31449 26.74 1469.90 1020.893 4.65 4.64 7.384 2.79720 4.31877 26.77 1469.97 1020.917 4.95 4.94 7.390 2.79778 4.31884 26.77 1470.00 1020.919 5.25 5.24 7.394 2.79965 4.32128 26.79 1470.04 1020.933 5.55 5.54 7.395 2.80098 4.32320 26.80 1470.06 1020.945 5.85 5.84 7.398 2.80318 4.32618 26.82 1470.11 1020.962 6.15 6.14 7.405 2.80500 4.32810 26.83 1470.15 1020.973 6.45 6.44 7.408 2.80623 4.32949 26.84 1470.19 1020.982 6.75 6.74 7.415 2.80752 4.33054 26.85 1470.23 1020.989 7.05 7.04 7.420 2.80826 4.33102 26.86 1470.26 1020.992 7.35 7.34 7.424 2.80850 4.33094 26.86 1470.28 1020.993 7.65 7.64 7.428 2.80988 4.33254 26.87 1470.31 1021.003 7.95 7.94 7.430 2.81078 4.33356 26.87 1470.34 1021.010 8.25 8.24 7.432 2.81234 4.33579 26.89 1470.36 1021.023 8.55 8.54 7.432 2.81181 4.33490 26.88 1470.36 1021.020 8.85 8.84 7.432 2.81208 4.33536 26.89 1470.37 1021.023 9.15 9.14 7.432 2.81187 4.33502 26.88 1470.37 1021.023 9.45 9.44 7.432 2.81204 4.33528 26.89 1470.38 1021.026 9.75 9.73 7.433 2.81240 4.33575 26.89 1470.39 1021.029 10.05 10.04 7.433 2.81244 4.33579 26.89 1470.40 1021.031 10.35 10.33 7.432 2.81238 4.33583 26.89 1470.40 1021.032 10.65 10.63 7.431 2.81257 4.33621 26.89 1470.40 1021.036 10.95 10.93 7.432 2.81237 4.33585 26.89 1470.41 1021.035 11.25 11.23 7.432 2.81239 4.33587 26.89 1470.41 1021.036 11.55 11.53 7.432 2.81279 4.33643 26.89 1470.42 1021.041 11.85 11.83 7.433 2.81237 4.33563 26.89 1470.43 1021.038 12.15 12.13 7.433 2.81262 4.33600 26.89 1470.43 1021.041 12.45 12.43 7.433 2.81249 4.33586 26.89 1470.44 1021.042 12.75 12.73 7.434 2.81292 4.33641 26.89 1470.45 1021.046 13.05 13.03 7.434 2.81316 4.33670 26.89 1470.46 1021.049 13.35 13.33 7.435 2.81354 4.33720 26.90 1470.47 1021.053 13.65 13.63 7.435 2.81400 4.33789 26.90 1470.48 1021.058 13.95 13.93 7.436 2.81441 4.33847 26.91 1470.49 1021.062 14.25 14.23 7.436 2.81422 4.33816 26.90 1470.49 1021.062 14.55 14.53 7.437 2.81466 4.33872 26.91 1470.51 1021.066 14.85 14.83 7.437 2.81493 4.33908 26.91 1470.52 1021.069 15.15 15.13 7.438 2.81592 4.34046 26.92 1470.54 1021.078 15.45 15.43 7.440 2.81672 4.34147 26.93 1470.56 1021.085 15.75 15.72 7.441 2.81700 4.34167 26.93 1470.57 1021.087 16.05 16.02 7.443 2.81786 4.34273 26.93 1470.60 1021.094 16.35 16.32 7.446 2.81884 4.34392 26.94 1470.62 1021.101 16.65 16.62 7.448 2.81955 4.34467 26.95 1470.64 1021.107 16.95 16.92 7.451 2.82024 4.34541 26.95 1470.66 1021.112 17.25 17.22 7.455 2.82212 4.34780 26.97 1470.70 1021.126 17.55 17.52 7.459 2.82288 4.34837 26.98 1470.73 1021.130 17.85 17.82 7.463 2.82391 4.34941 26.98 1470.76 1021.137 18.15 18.12 7.469 2.82523 4.35069 26.99 1470.80 1021.145 18.45 18.42 7.474 2.82725 4.35311 27.01 1470.85 1021.159 18.75 18.72 7.479 2.82881 4.35482 27.02 1470.88 1021.170 19.05 19.02 7.484 2.83088 4.35736 27.04 1470.93 1021.185 19.35 19.32 7.491 2.83297 4.35968 27.06 1470.98 1021.198 19.65 19.62 7.499 2.83522 4.36204 27.07 1471.04 1021.212 19.95 19.92 7.506 2.84085 4.36978 27.13 1471.14 1021.255 20.25 20.22 7.517 2.84540 4.37530 27.17 1471.24 1021.285 20.55 20.52 7.529 2.84777 4.37732 27.18 1471.31 1021.297 20.85 20.82 7.536 2.85387 4.38564 27.24 1471.41 1021.343 21.15 21.12 7.542 2.85572 4.38776 27.25 1471.46 1021.356 21.45 21.41 7.549 2.85641 4.38785 27.26 1471.49 1021.357 21.75 21.71 7.554 2.85737 4.38861 27.26 1471.53 1021.363 22.05 22.01 7.559 2.85777 4.38856 27.26 1471.55 1021.364 22.35 22.31 7.563 2.85829 4.38890 27.27 1471.57 1021.367 22.65 22.61 7.567 2.85934 4.38994 27.27 1471.60 1021.373 22.95 22.91 7.571 2.86253 4.39435 27.30 1471.66 1021.398 23.25 23.21 7.574 2.86446 4.39683 27.32 1471.70 1021.413 23.55 23.51 7.579 2.86449 4.39629 27.32 1471.72 1021.411 23.85 23.81 7.583 2.86520 4.39681 27.32 1471.74 1021.415 24.15 24.11 7.583 2.86496 4.39633 27.32 1471.75 1021.414 24.45 24.41 7.584 2.86518 4.39657 27.32 1471.76 1021.417 24.75 24.71 7.586 2.86606 4.39772 27.33 1471.78 1021.424 25.05 25.01 7.587 2.86604 4.39746 27.33 1471.79 1021.424 25.35 25.31 7.587 2.86579 4.39709 27.32 1471.79 1021.423 25.65 25.61 7.589 2.86633 4.39772 27.33 1471.81 1021.428 25.95 25.91 7.588 2.86624 4.39765 27.33 1471.81 1021.429 26.25 26.21 7.588 2.86610 4.39748 27.33 1471.81 1021.429 26.55 26.50 7.590 2.86691 4.39844 27.33 1471.83 1021.436 26.85 26.80 7.590 2.86718 4.39888 27.34 1471.84 1021.439 27.15 27.10 7.591 2.86827 4.40043 27.35 1471.86 1021.449 27.45 27.40 7.594 2.86858 4.40045 27.35 1471.88 1021.450 27.81 27.76 7.598 2.86877 4.40017 27.34 1471.90 1021.450