*2019/08/26 15:30:34.53 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/04 02:02:03.000 END TIME : UTC 2017/03/04 02:02:19.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 83 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 24.89 2 Depth metres 0.15 24.86 3 Temperature 'deg C (ITS90)' 7.397 7.497 4 Conductivity S/m 2.718 2.78287 5 Conductance:Specific S/m 4.19421 4.28191 6 Salinity PSS-78 25.92 26.52 7 Speed:Sound m/s 1468.91 1470.44 8 Density kg/m^3 1020.234 1020.805 $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 : 348 LATITUDE : 49 18.54357 N ! (deg min) LONGITUDE : 123 6.26310 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 21:40:14 83 83 HDREDIT2 3.1.1 2017/12/13 11:33:19 ? ? CALIB 12.0 2019/08/26 15:30:34 83 83 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:40:14 -HEADER EDITS: 2017/12/13 11:33:19 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 15:30:34 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_20170304_020203 % Cast time (UTC),2017-03-04 02:02:03 % Cast time (local),2017-03-04 02:02:03 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3090595 % Start longitude,-123.104385 % Start altitude,-13.760000228881836 % Start GPS horizontal error(Meter),5.929999828338623 % Start GPS vertical error(Meter),10.329999923706055 % Start GPS number of satellites,5 % End latitude,49.3093102 % End longitude,-123.1043435 % End altitude,-15.460000038146973 % End GPS horizontal error(Meter),5.5799999237060547 % End GPS vertical error(Meter),6.0399999618530273 % End GPS number of satellites,5 % Cast duration (Seconds),67 % 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 7.398 2.71820 4.19503 25.93 1468.91 1020.236 0.45 0.45 7.397 2.71800 4.19481 25.93 1468.91 1020.236 0.75 0.75 7.402 2.71800 4.19421 25.92 1468.93 1020.234 1.05 1.05 7.412 2.72664 4.20627 26.01 1469.07 1020.299 1.35 1.35 7.420 2.74045 4.22652 26.14 1469.28 1020.409 1.65 1.65 7.426 2.74692 4.23565 26.21 1469.39 1020.459 1.95 1.95 7.430 2.75435 4.24655 26.28 1469.50 1020.518 2.25 2.25 7.434 2.75773 4.25131 26.32 1469.56 1020.545 2.55 2.55 7.438 2.75733 4.25016 26.31 1469.58 1020.540 2.85 2.85 7.441 2.75807 4.25088 26.31 1469.60 1020.545 3.15 3.15 7.443 2.75906 4.25215 26.32 1469.62 1020.553 3.45 3.45 7.446 2.75924 4.25204 26.32 1469.64 1020.554 3.75 3.75 7.448 2.75975 4.25257 26.32 1469.66 1020.558 4.05 4.05 7.450 2.76083 4.25392 26.34 1469.68 1020.566 4.35 4.34 7.453 2.76254 4.25623 26.35 1469.72 1020.580 4.65 4.64 7.458 2.76383 4.25761 26.36 1469.75 1020.589 4.95 4.95 7.462 2.76485 4.25864 26.37 1469.78 1020.595 5.25 5.24 7.464 2.76727 4.26212 26.39 1469.82 1020.615 5.55 5.54 7.467 2.76810 4.26297 26.40 1469.85 1020.621 5.85 5.84 7.469 2.76970 4.26512 26.41 1469.88 1020.634 6.15 6.14 7.471 2.77107 4.26700 26.43 1469.91 1020.645 6.45 6.44 7.473 2.77259 4.26913 26.44 1469.94 1020.658 6.75 6.74 7.474 2.77165 4.26747 26.43 1469.94 1020.650 7.05 7.04 7.475 2.77198 4.26784 26.43 1469.95 1020.653 7.35 7.34 7.476 2.77360 4.27016 26.45 1469.98 1020.667 7.65 7.64 7.478 2.77366 4.27010 26.45 1469.99 1020.668 7.95 7.94 7.479 2.77366 4.26994 26.45 1469.99 1020.668 8.25 8.24 7.481 2.77294 4.26855 26.44 1470.00 1020.662 8.55 8.54 7.485 2.77392 4.26952 26.44 1470.03 1020.669 8.85 8.84 7.487 2.77643 4.27317 26.47 1470.07 1020.689 9.15 9.14 7.488 2.77834 4.27596 26.49 1470.10 1020.706 9.45 9.44 7.488 2.77911 4.27716 26.50 1470.12 1020.713 9.75 9.74 7.488 2.77903 4.27708 26.50 1470.12 1020.714 10.05 10.04 7.488 2.77830 4.27595 26.49 1470.12 1020.709 10.35 10.34 7.488 2.77882 4.27668 26.49 1470.13 1020.715 10.65 10.64 7.489 2.77904 4.27688 26.49 1470.14 1020.717 10.95 10.94 7.489 2.77943 4.27746 26.50 1470.15 1020.721 11.25 11.24 7.490 2.78028 4.27871 26.51 1470.17 1020.729 11.55 11.54 7.490 2.77995 4.27819 26.50 1470.17 1020.728 11.85 11.84 7.491 2.78033 4.27862 26.51 1470.18 1020.732 12.15 12.13 7.491 2.78019 4.27837 26.50 1470.18 1020.731 12.45 12.44 7.492 2.78046 4.27868 26.51 1470.19 1020.734 12.75 12.73 7.493 2.78040 4.27848 26.50 1470.20 1020.735 13.05 13.03 7.492 2.78021 4.27829 26.50 1470.20 1020.735 13.35 13.33 7.492 2.78087 4.27931 26.51 1470.21 1020.742 13.65 13.63 7.492 2.77994 4.27794 26.50 1470.20 1020.736 13.95 13.93 7.493 2.78038 4.27849 26.50 1470.22 1020.740 14.25 14.23 7.493 2.78080 4.27908 26.51 1470.23 1020.744 14.55 14.53 7.493 2.78029 4.27836 26.50 1470.23 1020.742 14.85 14.83 7.493 2.78041 4.27853 26.50 1470.23 1020.744 15.15 15.13 7.492 2.77997 4.27789 26.50 1470.23 1020.742 15.45 15.43 7.493 2.78054 4.27872 26.50 1470.24 1020.748 15.75 15.73 7.493 2.78000 4.27786 26.50 1470.24 1020.744 16.05 16.03 7.493 2.78021 4.27820 26.50 1470.25 1020.747 16.35 16.33 7.493 2.78023 4.27819 26.50 1470.26 1020.749 16.65 16.63 7.492 2.78052 4.27874 26.50 1470.26 1020.753 16.95 16.93 7.492 2.77984 4.27768 26.50 1470.26 1020.749 17.25 17.23 7.492 2.78032 4.27841 26.50 1470.27 1020.754 17.55 17.53 7.493 2.78035 4.27836 26.50 1470.28 1020.755 17.85 17.83 7.493 2.78036 4.27835 26.50 1470.28 1020.756 18.15 18.13 7.494 2.77995 4.27769 26.50 1470.28 1020.754 18.45 18.43 7.492 2.78031 4.27840 26.50 1470.29 1020.759 18.75 18.73 7.493 2.78011 4.27805 26.50 1470.29 1020.758 19.05 19.03 7.493 2.78022 4.27821 26.50 1470.30 1020.760 19.35 19.33 7.493 2.77996 4.27778 26.50 1470.30 1020.759 19.65 19.62 7.493 2.78013 4.27804 26.50 1470.31 1020.762 19.95 19.93 7.493 2.78019 4.27808 26.50 1470.31 1020.764 20.25 20.22 7.493 2.78023 4.27821 26.50 1470.32 1020.766 20.55 20.52 7.493 2.78013 4.27800 26.50 1470.32 1020.766 20.85 20.82 7.494 2.78021 4.27803 26.50 1470.33 1020.767 21.15 21.12 7.494 2.78070 4.27880 26.50 1470.34 1020.773 21.45 21.42 7.494 2.78003 4.27782 26.50 1470.34 1020.769 21.75 21.72 7.494 2.78052 4.27855 26.50 1470.35 1020.774 22.05 22.02 7.494 2.78070 4.27881 26.50 1470.35 1020.777 22.35 22.32 7.494 2.78141 4.27988 26.51 1470.37 1020.784 22.65 22.62 7.496 2.78213 4.28080 26.52 1470.39 1020.790 22.95 22.92 7.496 2.78214 4.28078 26.52 1470.39 1020.791 23.25 23.22 7.495 2.78284 4.28191 26.52 1470.40 1020.798 23.55 23.52 7.495 2.78229 4.28113 26.52 1470.40 1020.795 23.85 23.82 7.495 2.78264 4.28157 26.52 1470.41 1020.799 24.15 24.12 7.496 2.78254 4.28141 26.52 1470.42 1020.800 24.45 24.42 7.496 2.78181 4.28018 26.51 1470.41 1020.794 24.89 24.86 7.497 2.78287 4.28176 26.52 1470.44 1020.805