*2019/08/26 15:30:30.17 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 23:24:44.000 END TIME : UTC 2017/02/28 23:24:59.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 80 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 23.86 2 Depth metres 0.15 23.83 3 Temperature 'deg C (ITS90)' 7.62 7.731 4 Conductivity S/m 2.8078 2.88609 5 Conductance:Specific S/m 4.30321 4.4088 6 Salinity PSS-78 26.7 27.42 7 Speed:Sound m/s 1470.73 1472.45 8 Density kg/m^3 1020.811 1021.477 $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 : 281 LATITUDE : 49 18.62768 N ! (deg min) LONGITUDE : 123 5.78438 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 20:33:32 80 80 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:30 80 80 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:33:31 -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 15:30:30 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_20170228_232444 % Cast time (UTC),2017-02-28 23:24:44 % Cast time (local),2017-02-28 23:24:44 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3104614 % Start longitude,-123.0964064 % Start altitude,-34.599998474121094 % Start GPS horizontal error(Meter),5.5799999237060547 % Start GPS vertical error(Meter),9.2600002288818359 % Start GPS number of satellites,5 % End latitude,49.3107313 % End longitude,-123.0966811 % End altitude,-20.450000762939453 % End GPS horizontal error(Meter),5.9200000762939453 % End GPS vertical error(Meter),8.15999984741211 % End GPS number of satellites,5 % Cast duration (Seconds),81.6 % 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 7.620 2.80784 4.30384 26.70 1470.73 1020.813 0.45 0.45 7.624 2.80780 4.30321 26.70 1470.75 1020.811 0.75 0.75 7.626 2.80818 4.30359 26.70 1470.77 1020.815 1.05 1.05 7.627 2.80905 4.30481 26.71 1470.78 1020.822 1.35 1.35 7.627 2.80961 4.30560 26.71 1470.80 1020.828 1.65 1.65 7.626 2.80925 4.30525 26.71 1470.79 1020.827 1.95 1.95 7.625 2.80964 4.30594 26.71 1470.80 1020.832 2.25 2.25 7.625 2.81056 4.30735 26.72 1470.82 1020.841 2.55 2.55 7.626 2.81084 4.30763 26.73 1470.83 1020.844 2.85 2.85 7.628 2.81150 4.30844 26.73 1470.85 1020.850 3.15 3.15 7.630 2.81150 4.30822 26.73 1470.86 1020.850 3.45 3.44 7.630 2.81167 4.30836 26.73 1470.87 1020.852 3.75 3.75 7.632 2.81254 4.30955 26.74 1470.89 1020.859 4.05 4.04 7.633 2.81242 4.30918 26.74 1470.89 1020.859 4.35 4.34 7.634 2.81221 4.30872 26.73 1470.90 1020.857 4.65 4.64 7.635 2.81350 4.31060 26.75 1470.92 1020.869 4.95 4.94 7.637 2.81324 4.30994 26.74 1470.93 1020.867 5.25 5.24 7.637 2.81354 4.31036 26.75 1470.94 1020.870 5.55 5.54 7.637 2.81341 4.31012 26.74 1470.94 1020.870 5.85 5.84 7.638 2.81354 4.31021 26.74 1470.95 1020.872 6.15 6.14 7.639 2.81379 4.31048 26.75 1470.96 1020.875 6.45 6.44 7.639 2.81405 4.31088 26.75 1470.97 1020.878 6.75 6.74 7.640 2.81399 4.31071 26.75 1470.98 1020.878 7.05 7.04 7.640 2.81400 4.31071 26.75 1470.98 1020.880 7.35 7.34 7.640 2.81457 4.31151 26.75 1470.99 1020.885 7.65 7.64 7.640 2.81462 4.31158 26.75 1471.00 1020.887 7.95 7.94 7.641 2.81471 4.31165 26.75 1471.01 1020.889 8.25 8.24 7.641 2.81449 4.31128 26.75 1471.01 1020.888 8.55 8.54 7.641 2.81487 4.31183 26.75 1471.02 1020.892 8.85 8.84 7.642 2.81506 4.31202 26.75 1471.03 1020.894 9.15 9.14 7.642 2.81511 4.31212 26.76 1471.04 1020.896 9.45 9.44 7.642 2.81516 4.31214 26.76 1471.04 1020.898 9.75 9.74 7.642 2.81535 4.31244 26.76 1471.05 1020.901 10.05 10.04 7.643 2.81534 4.31231 26.76 1471.06 1020.901 10.35 10.34 7.643 2.81551 4.31262 26.76 1471.06 1020.904 10.65 10.63 7.643 2.81602 4.31334 26.76 1471.08 1020.909 10.95 10.93 7.643 2.81577 4.31301 26.76 1471.08 1020.909 11.25 11.23 7.644 2.81558 4.31260 26.76 1471.08 1020.908 11.55 11.53 7.644 2.81546 4.31236 26.76 1471.08 1020.908 11.85 11.83 7.644 2.81577 4.31282 26.76 1471.09 1020.912 12.15 12.13 7.644 2.81636 4.31372 26.77 1471.11 1020.918 12.45 12.43 7.644 2.81691 4.31460 26.77 1471.12 1020.924 12.75 12.73 7.644 2.81653 4.31405 26.77 1471.12 1020.922 13.05 13.03 7.644 2.81677 4.31437 26.77 1471.12 1020.925 13.35 13.33 7.645 2.81691 4.31447 26.77 1471.13 1020.927 13.65 13.63 7.645 2.81702 4.31463 26.77 1471.14 1020.929 13.95 13.93 7.644 2.81669 4.31426 26.77 1471.14 1020.928 14.25 14.23 7.644 2.81718 4.31500 26.77 1471.15 1020.934 14.55 14.53 7.645 2.81746 4.31536 26.78 1471.16 1020.937 14.85 14.83 7.646 2.81740 4.31513 26.77 1471.17 1020.937 15.15 15.13 7.646 2.81724 4.31484 26.77 1471.17 1020.937 15.45 15.43 7.647 2.81745 4.31506 26.77 1471.18 1020.939 15.75 15.73 7.647 2.81764 4.31535 26.78 1471.19 1020.942 16.05 16.03 7.648 2.81767 4.31523 26.77 1471.20 1020.943 16.35 16.33 7.651 2.81831 4.31584 26.78 1471.22 1020.947 16.65 16.62 7.654 2.81807 4.31501 26.77 1471.23 1020.944 16.95 16.93 7.660 2.81856 4.31494 26.77 1471.26 1020.945 17.25 17.22 7.664 2.82785 4.32865 26.87 1471.39 1021.019 17.55 17.52 7.666 2.83542 4.33997 26.95 1471.50 1021.081 17.85 17.82 7.670 2.84366 4.35204 27.03 1471.63 1021.147 18.15 18.12 7.677 2.84517 4.35345 27.04 1471.67 1021.156 18.45 18.42 7.681 2.84664 4.35518 27.05 1471.71 1021.166 18.75 18.72 7.683 2.84678 4.35520 27.05 1471.72 1021.168 19.05 19.02 7.682 2.84660 4.35493 27.05 1471.72 1021.168 19.35 19.32 7.684 2.84613 4.35401 27.04 1471.72 1021.164 19.65 19.62 7.685 2.84727 4.35565 27.05 1471.74 1021.174 19.95 19.92 7.686 2.84831 4.35704 27.07 1471.77 1021.183 20.25 20.22 7.687 2.85008 4.35961 27.08 1471.80 1021.198 20.55 20.52 7.689 2.85072 4.36031 27.09 1471.82 1021.203 20.85 20.82 7.690 2.85073 4.36026 27.09 1471.82 1021.204 21.15 21.12 7.690 2.85115 4.36085 27.09 1471.84 1021.208 21.45 21.42 7.690 2.85143 4.36133 27.09 1471.84 1021.212 21.75 21.72 7.689 2.85231 4.36280 27.10 1471.86 1021.221 22.05 22.02 7.690 2.85295 4.36363 27.11 1471.87 1021.227 22.35 22.32 7.693 2.85344 4.36405 27.11 1471.89 1021.231 22.65 22.61 7.693 2.85458 4.36569 27.12 1471.91 1021.241 22.95 22.91 7.695 2.86549 4.38209 27.24 1472.06 1021.330 23.25 23.21 7.705 2.87521 4.39574 27.33 1472.22 1021.404 23.55 23.51 7.722 2.88273 4.40494 27.40 1472.37 1021.455 23.86 23.83 7.731 2.88609 4.40880 27.42 1472.45 1021.477