*2019/08/26 15:30:29.57 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 22:31:08.000 END TIME : UTC 2017/02/28 22:31:31.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 118 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 35.13 2 Depth metres 0.15 35.06 3 Temperature 'deg C (ITS90)' 7.633 7.848 4 Conductivity S/m 2.79485 2.94657 5 Conductance:Specific S/m 4.28207 4.48622 6 Salinity PSS-78 26.55 27.97 7 Speed:Sound m/s 1470.61 1473.74 8 Density kg/m^3 1020.696 1021.934 $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 : 271 LATITUDE : 49 17.89782 N ! (deg min) LONGITUDE : 123 5.01173 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 20:23:52 118 118 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:29 118 118 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:23:52 -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 15:30:29 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_223108_mid % Cast time (UTC),2017-02-28 22:31:08 % Cast time (local),2017-02-28 22:31:08 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.298297 % Start longitude,-123.0835288 % Start altitude,-14.239999771118164 % Start GPS horizontal error(Meter),1.9099999666213989 % Start GPS vertical error(Meter),2.9100000858306885 % Start GPS number of satellites,7 % End latitude,49.2985302 % End longitude,-123.0839847 % End altitude,-11.069999694824219 % End GPS horizontal error(Meter),4.3299999237060547 % End GPS vertical error(Meter),6.7399997711181641 % End GPS number of satellites,7 % Cast duration (Seconds),129.4 % 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 7.634 2.79485 4.28207 26.55 1470.61 1020.696 0.45 0.45 7.633 2.79489 4.28231 26.55 1470.61 1020.699 0.75 0.75 7.634 2.79556 4.28322 26.56 1470.63 1020.705 1.05 1.05 7.635 2.79578 4.28343 26.56 1470.64 1020.708 1.35 1.35 7.636 2.79737 4.28572 26.58 1470.66 1020.721 1.65 1.65 7.637 2.79967 4.28910 26.60 1470.70 1020.741 1.95 1.95 7.638 2.80480 4.29681 26.65 1470.78 1020.783 2.25 2.25 7.638 2.80583 4.29838 26.66 1470.80 1020.793 2.55 2.55 7.639 2.80706 4.30016 26.68 1470.82 1020.804 2.85 2.85 7.638 2.80947 4.30400 26.70 1470.85 1020.826 3.15 3.15 7.637 2.81006 4.30500 26.71 1470.86 1020.832 3.45 3.44 7.639 2.81128 4.30668 26.72 1470.89 1020.843 3.75 3.75 7.639 2.81488 4.31209 26.76 1470.94 1020.873 4.05 4.04 7.640 2.81663 4.31466 26.77 1470.97 1020.888 4.35 4.34 7.640 2.81945 4.31901 26.80 1471.01 1020.912 4.65 4.64 7.641 2.82097 4.32122 26.82 1471.04 1020.926 4.95 4.94 7.643 2.82379 4.32532 26.85 1471.08 1020.949 5.25 5.24 7.644 2.82379 4.32516 26.85 1471.09 1020.949 5.55 5.54 7.645 2.82402 4.32534 26.85 1471.10 1020.951 5.85 5.84 7.645 2.82567 4.32786 26.86 1471.13 1020.966 6.15 6.14 7.646 2.82734 4.33030 26.88 1471.16 1020.981 6.45 6.44 7.647 2.82868 4.33225 26.89 1471.18 1020.992 6.75 6.74 7.646 2.82950 4.33365 26.90 1471.19 1021.001 7.05 7.04 7.646 2.82940 4.33341 26.90 1471.20 1021.001 7.35 7.34 7.647 2.83020 4.33458 26.91 1471.22 1021.009 7.65 7.64 7.645 2.83130 4.33644 26.92 1471.23 1021.020 7.95 7.94 7.645 2.83185 4.33733 26.93 1471.24 1021.026 8.25 8.24 7.645 2.83396 4.34058 26.95 1471.28 1021.045 8.55 8.54 7.646 2.83582 4.34330 26.97 1471.31 1021.061 8.85 8.84 7.646 2.83763 4.34613 26.99 1471.33 1021.077 9.15 9.14 7.645 2.83926 4.34868 27.01 1471.36 1021.092 9.45 9.44 7.643 2.84151 4.35233 27.03 1471.39 1021.113 9.75 9.73 7.643 2.84321 4.35498 27.05 1471.41 1021.129 10.05 10.04 7.644 2.84603 4.35925 27.08 1471.46 1021.153 10.35 10.33 7.643 2.84989 4.36525 27.12 1471.51 1021.186 10.65 10.63 7.642 2.85109 4.36721 27.13 1471.53 1021.198 10.95 10.93 7.641 2.85234 4.36925 27.15 1471.55 1021.210 11.25 11.23 7.641 2.85299 4.37023 27.15 1471.56 1021.217 11.55 11.53 7.640 2.85528 4.37386 27.18 1471.59 1021.238 11.85 11.83 7.639 2.85700 4.37660 27.20 1471.62 1021.254 12.15 12.13 7.638 2.85766 4.37776 27.20 1471.62 1021.261 12.45 12.43 7.638 2.85884 4.37963 27.22 1471.64 1021.273 12.75 12.73 7.638 2.86051 4.38215 27.23 1471.67 1021.288 13.05 13.03 7.638 2.86112 4.38317 27.24 1471.68 1021.294 13.35 13.33 7.638 2.86177 4.38414 27.25 1471.70 1021.301 13.65 13.63 7.640 2.86220 4.38454 27.25 1471.71 1021.304 13.95 13.93 7.640 2.86292 4.38563 27.26 1471.73 1021.311 14.25 14.23 7.638 2.86597 4.39049 27.29 1471.77 1021.339 14.55 14.53 7.639 2.86740 4.39263 27.30 1471.79 1021.352 14.85 14.83 7.640 2.86836 4.39388 27.31 1471.81 1021.360 15.15 15.12 7.641 2.87019 4.39660 27.33 1471.84 1021.375 15.45 15.43 7.640 2.87203 4.39961 27.35 1471.87 1021.393 15.75 15.72 7.640 2.87191 4.39942 27.35 1471.87 1021.393 16.05 16.02 7.640 2.87232 4.40006 27.36 1471.88 1021.398 16.35 16.32 7.639 2.87393 4.40259 27.37 1471.90 1021.413 16.65 16.62 7.640 2.87457 4.40341 27.38 1471.92 1021.419 16.95 16.92 7.640 2.87497 4.40401 27.38 1471.93 1021.423 17.25 17.22 7.641 2.87658 4.40634 27.40 1471.96 1021.437 17.55 17.52 7.644 2.87702 4.40666 27.40 1471.98 1021.440 17.85 17.82 7.647 2.87826 4.40817 27.41 1472.01 1021.449 18.15 18.12 7.648 2.87969 4.41021 27.42 1472.03 1021.461 18.45 18.42 7.651 2.88040 4.41095 27.43 1472.06 1021.467 18.75 18.72 7.653 2.88120 4.41181 27.44 1472.08 1021.473 19.05 19.02 7.655 2.88230 4.41320 27.45 1472.10 1021.481 19.35 19.32 7.657 2.88227 4.41299 27.44 1472.11 1021.481 19.65 19.62 7.657 2.88246 4.41326 27.45 1472.12 1021.484 19.95 19.92 7.658 2.88284 4.41366 27.45 1472.13 1021.488 20.25 20.21 7.661 2.88297 4.41347 27.45 1472.15 1021.488 20.55 20.51 7.667 2.88345 4.41336 27.45 1472.18 1021.488 20.85 20.81 7.674 2.88517 4.41505 27.46 1472.22 1021.499 21.15 21.11 7.677 2.88867 4.41997 27.49 1472.28 1021.526 21.45 21.41 7.682 2.89093 4.42281 27.51 1472.33 1021.543 21.75 21.71 7.687 2.89526 4.42882 27.56 1472.41 1021.576 22.05 22.01 7.696 2.89650 4.42944 27.56 1472.45 1021.581 22.35 22.31 7.702 2.89671 4.42891 27.56 1472.48 1021.579 22.65 22.61 7.704 2.89725 4.42955 27.56 1472.50 1021.584 22.95 22.91 7.704 2.89699 4.42908 27.56 1472.50 1021.582 23.25 23.21 7.706 2.89778 4.43002 27.57 1472.52 1021.589 23.55 23.51 7.711 2.89832 4.43022 27.57 1472.55 1021.591 23.85 23.81 7.718 2.89820 4.42912 27.56 1472.57 1021.586 24.15 24.11 7.722 2.89926 4.43016 27.57 1472.60 1021.593 24.45 24.41 7.722 2.90025 4.43166 27.58 1472.62 1021.602 24.75 24.70 7.725 2.90288 4.43522 27.60 1472.66 1021.623 25.05 25.00 7.733 2.90476 4.43704 27.62 1472.72 1021.634 25.35 25.30 7.735 2.90768 4.44125 27.65 1472.77 1021.658 25.65 25.60 7.738 2.90867 4.44240 27.66 1472.79 1021.665 25.95 25.90 7.742 2.90916 4.44260 27.66 1472.81 1021.667 26.25 26.20 7.744 2.91001 4.44357 27.66 1472.84 1021.674 26.55 26.50 7.746 2.91068 4.44429 27.67 1472.86 1021.679 26.85 26.80 7.750 2.91133 4.44475 27.67 1472.88 1021.683 27.15 27.10 7.755 2.91301 4.44666 27.69 1472.92 1021.694 27.45 27.40 7.760 2.91586 4.45038 27.71 1472.98 1021.715 27.75 27.70 7.766 2.91985 4.45557 27.75 1473.05 1021.744 28.05 28.00 7.777 2.92087 4.45566 27.75 1473.10 1021.746 28.35 28.30 7.787 2.92278 4.45726 27.76 1473.16 1021.756 28.65 28.60 7.793 2.92511 4.45997 27.78 1473.21 1021.771 28.95 28.90 7.798 2.92757 4.46306 27.80 1473.26 1021.789 29.25 29.20 7.803 2.93148 4.46835 27.84 1473.33 1021.819 29.55 29.49 7.806 2.93423 4.47207 27.87 1473.38 1021.840 29.85 29.79 7.809 2.93752 4.47673 27.90 1473.44 1021.866 30.15 30.09 7.815 2.94192 4.48254 27.94 1473.52 1021.899 30.45 30.39 7.823 2.94414 4.48494 27.96 1473.57 1021.913 30.75 30.69 7.829 2.94497 4.48534 27.96 1473.61 1021.916 31.05 30.99 7.833 2.94551 4.48565 27.96 1473.63 1021.919 31.35 31.29 7.834 2.94577 4.48589 27.96 1473.64 1021.922 31.65 31.59 7.834 2.94603 4.48622 27.97 1473.65 1021.925 31.95 31.89 7.836 2.94613 4.48618 27.97 1473.66 1021.926 32.25 32.19 7.837 2.94616 4.48600 27.97 1473.67 1021.926 32.55 32.49 7.837 2.94609 4.48587 27.96 1473.67 1021.927 32.85 32.79 7.837 2.94568 4.48534 27.96 1473.67 1021.925 33.15 33.09 7.840 2.94610 4.48560 27.96 1473.69 1021.928 33.45 33.38 7.841 2.94623 4.48555 27.96 1473.70 1021.929 33.75 33.68 7.840 2.94630 4.48582 27.96 1473.70 1021.931 34.05 33.98 7.842 2.94628 4.48553 27.96 1473.71 1021.931 34.35 34.28 7.848 2.94657 4.48519 27.96 1473.74 1021.930 34.65 34.58 7.845 2.94592 4.48461 27.96 1473.72 1021.929 34.95 34.88 7.841 2.94575 4.48484 27.96 1473.72 1021.931 35.13 35.06 7.840 2.94582 4.48514 27.96 1473.72 1021.934