*2019/08/26 15:30:30.32 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/01 20:12:33.000 END TIME : UTC 2017/03/01 20:12:55.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 112 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 33.4 2 Depth metres 0.15 33.35 3 Temperature 'deg C (ITS90)' 7.549 7.583 4 Conductivity S/m 2.78209 2.79786 5 Conductance:Specific S/m 4.27354 4.29577 6 Salinity PSS-78 26.48 26.63 7 Speed:Sound m/s 1470.2 1471 8 Density kg/m^3 1020.656 1020.889 $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 : 283 LATITUDE : 49 17.68517 N ! (deg min) LONGITUDE : 123 1.64493 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 20:35:31 112 112 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:30 112 112 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:35:31 -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_20170301_201233 % Cast time (UTC),2017-03-01 20:12:33 % Cast time (local),2017-03-01 20:12:33 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2947528 % Start longitude,-123.0274155 % Start altitude,7.570000171661377 % Start GPS horizontal error(Meter),1.6100000143051148 % Start GPS vertical error(Meter),2.5699999332427979 % Start GPS number of satellites,8 % End latitude,49.2948042 % End longitude,-123.0302516 % End altitude,-26.360000610351562 % End GPS horizontal error(Meter),4.7699999809265137 % End GPS vertical error(Meter),7.1999998092651367 % End GPS number of satellites,8 % Cast duration (Seconds),144 % 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 7.549 2.78358 4.27600 26.50 1470.21 1020.666 0.45 0.45 7.550 2.78323 4.27534 26.50 1470.21 1020.663 0.75 0.75 7.549 2.78209 4.27373 26.48 1470.20 1020.656 1.05 1.05 7.551 2.78216 4.27354 26.48 1470.21 1020.656 1.35 1.35 7.553 2.78444 4.27677 26.50 1470.25 1020.675 1.65 1.65 7.557 2.78569 4.27820 26.52 1470.28 1020.684 1.95 1.95 7.560 2.78747 4.28054 26.53 1470.32 1020.698 2.25 2.25 7.560 2.78803 4.28141 26.54 1470.33 1020.704 2.55 2.55 7.558 2.78938 4.28367 26.55 1470.35 1020.717 2.85 2.85 7.560 2.78849 4.28201 26.54 1470.35 1020.709 3.15 3.15 7.558 2.78630 4.27901 26.52 1470.32 1020.695 3.45 3.45 7.555 2.78773 4.28152 26.54 1470.33 1020.709 3.75 3.75 7.557 2.78851 4.28246 26.54 1470.36 1020.716 4.05 4.04 7.556 2.78884 4.28314 26.55 1470.36 1020.721 4.35 4.34 7.556 2.78912 4.28353 26.55 1470.37 1020.724 4.65 4.64 7.559 2.78719 4.28023 26.53 1470.36 1020.708 4.95 4.94 7.556 2.78749 4.28110 26.53 1470.36 1020.714 5.25 5.24 7.556 2.78894 4.28326 26.55 1470.38 1020.727 5.55 5.54 7.559 2.78988 4.28428 26.56 1470.41 1020.733 5.85 5.84 7.557 2.79014 4.28500 26.56 1470.41 1020.738 6.15 6.14 7.556 2.78972 4.28450 26.56 1470.40 1020.737 6.45 6.44 7.556 2.79030 4.28536 26.56 1470.42 1020.743 6.75 6.74 7.556 2.79238 4.28855 26.58 1470.45 1020.761 7.05 7.04 7.556 2.79212 4.28813 26.58 1470.45 1020.760 7.35 7.34 7.556 2.79201 4.28796 26.58 1470.45 1020.761 7.65 7.64 7.558 2.79253 4.28849 26.58 1470.47 1020.765 7.95 7.94 7.557 2.79353 4.29016 26.59 1470.49 1020.775 8.25 8.24 7.557 2.79318 4.28965 26.59 1470.49 1020.774 8.55 8.54 7.558 2.79318 4.28956 26.59 1470.49 1020.774 8.85 8.84 7.558 2.79269 4.28886 26.59 1470.49 1020.772 9.15 9.14 7.559 2.79331 4.28958 26.59 1470.51 1020.777 9.45 9.44 7.559 2.79368 4.29021 26.59 1470.52 1020.782 9.75 9.74 7.560 2.79313 4.28921 26.59 1470.52 1020.778 10.05 10.04 7.560 2.79335 4.28952 26.59 1470.53 1020.781 10.35 10.34 7.561 2.79362 4.28982 26.59 1470.54 1020.784 10.65 10.64 7.560 2.79225 4.28781 26.58 1470.52 1020.774 10.95 10.94 7.560 2.79253 4.28830 26.58 1470.53 1020.778 11.25 11.23 7.559 2.79212 4.28781 26.58 1470.53 1020.777 11.55 11.53 7.560 2.79115 4.28614 26.57 1470.52 1020.769 11.85 11.83 7.561 2.79162 4.28670 26.57 1470.54 1020.773 12.15 12.13 7.561 2.79272 4.28841 26.58 1470.55 1020.784 12.45 12.43 7.560 2.79082 4.28565 26.56 1470.53 1020.770 12.75 12.73 7.560 2.79148 4.28667 26.57 1470.54 1020.777 13.05 13.03 7.559 2.79264 4.28853 26.58 1470.56 1020.788 13.35 13.33 7.560 2.79262 4.28836 26.58 1470.57 1020.789 13.65 13.63 7.560 2.79392 4.29041 26.59 1470.59 1020.801 13.95 13.93 7.560 2.79501 4.29215 26.61 1470.61 1020.812 14.25 14.23 7.560 2.79480 4.29183 26.60 1470.61 1020.811 14.55 14.53 7.561 2.79426 4.29087 26.60 1470.61 1020.807 14.85 14.83 7.563 2.79399 4.29011 26.59 1470.62 1020.805 15.15 15.13 7.563 2.79498 4.29169 26.60 1470.63 1020.814 15.45 15.43 7.561 2.79397 4.29042 26.59 1470.62 1020.809 15.75 15.73 7.560 2.79322 4.28937 26.59 1470.61 1020.805 16.05 16.03 7.561 2.79341 4.28952 26.59 1470.62 1020.807 16.35 16.33 7.562 2.79327 4.28914 26.59 1470.63 1020.806 16.65 16.63 7.563 2.79391 4.29000 26.59 1470.65 1020.812 16.95 16.93 7.563 2.79494 4.29158 26.60 1470.66 1020.822 17.25 17.23 7.563 2.79688 4.29452 26.62 1470.69 1020.839 17.55 17.53 7.563 2.79726 4.29513 26.63 1470.70 1020.843 17.85 17.83 7.565 2.79786 4.29577 26.63 1470.72 1020.848 18.15 18.12 7.565 2.79732 4.29504 26.62 1470.72 1020.845 18.45 18.43 7.564 2.79706 4.29472 26.62 1470.72 1020.845 18.75 18.72 7.564 2.79707 4.29475 26.62 1470.72 1020.846 19.05 19.02 7.564 2.79700 4.29461 26.62 1470.73 1020.847 19.35 19.32 7.568 2.79756 4.29490 26.62 1470.75 1020.850 19.65 19.62 7.568 2.79734 4.29465 26.62 1470.75 1020.850 19.95 19.92 7.565 2.79727 4.29488 26.62 1470.75 1020.852 20.25 20.22 7.565 2.79677 4.29417 26.62 1470.74 1020.850 20.55 20.52 7.568 2.79726 4.29447 26.62 1470.77 1020.853 20.85 20.82 7.568 2.79719 4.29438 26.62 1470.77 1020.853 21.15 21.12 7.567 2.79738 4.29477 26.62 1470.78 1020.857 21.45 21.42 7.568 2.79753 4.29496 26.62 1470.78 1020.859 21.75 21.72 7.568 2.79757 4.29497 26.62 1470.79 1020.860 22.05 22.02 7.569 2.79753 4.29475 26.62 1470.80 1020.860 22.35 22.32 7.569 2.79719 4.29421 26.62 1470.80 1020.859 22.65 22.62 7.570 2.79759 4.29480 26.62 1470.81 1020.863 22.95 22.92 7.567 2.79775 4.29533 26.63 1470.81 1020.867 23.25 23.22 7.567 2.79738 4.29482 26.62 1470.81 1020.866 23.55 23.52 7.568 2.79679 4.29382 26.61 1470.81 1020.862 23.85 23.82 7.568 2.79678 4.29379 26.61 1470.81 1020.863 24.15 24.12 7.566 2.79609 4.29297 26.61 1470.80 1020.860 24.45 24.42 7.568 2.79662 4.29349 26.61 1470.82 1020.864 24.75 24.72 7.574 2.79707 4.29348 26.61 1470.85 1020.865 25.05 25.02 7.570 2.79654 4.29313 26.61 1470.83 1020.865 25.35 25.32 7.568 2.79667 4.29356 26.61 1470.83 1020.868 25.65 25.61 7.573 2.79706 4.29346 26.61 1470.86 1020.869 25.95 25.91 7.578 2.79747 4.29345 26.61 1470.88 1020.870 26.25 26.21 7.572 2.79707 4.29361 26.61 1470.87 1020.872 26.55 26.51 7.569 2.79730 4.29437 26.62 1470.87 1020.878 26.85 26.81 7.571 2.79698 4.29360 26.61 1470.87 1020.875 27.15 27.11 7.574 2.79692 4.29319 26.61 1470.88 1020.874 27.45 27.41 7.570 2.79613 4.29249 26.61 1470.87 1020.872 27.75 27.71 7.573 2.79703 4.29354 26.61 1470.89 1020.879 28.05 28.01 7.570 2.79694 4.29375 26.61 1470.89 1020.881 28.35 28.31 7.572 2.79703 4.29361 26.61 1470.90 1020.882 28.65 28.61 7.571 2.79705 4.29379 26.61 1470.90 1020.884 28.95 28.91 7.571 2.79698 4.29373 26.61 1470.90 1020.885 29.25 29.21 7.569 2.79657 4.29327 26.61 1470.90 1020.884 29.55 29.51 7.570 2.79532 4.29127 26.60 1470.89 1020.874 29.85 29.81 7.571 2.79505 4.29072 26.59 1470.89 1020.873 30.15 30.11 7.572 2.79460 4.28990 26.59 1470.89 1020.869 30.45 30.41 7.575 2.79476 4.28969 26.59 1470.91 1020.870 30.75 30.71 7.576 2.79498 4.28992 26.59 1470.92 1020.872 31.05 31.01 7.582 2.79485 4.28895 26.58 1470.94 1020.868 31.35 31.31 7.575 2.79484 4.28981 26.59 1470.93 1020.874 31.65 31.61 7.577 2.79524 4.29020 26.59 1470.94 1020.877 31.95 31.91 7.578 2.79517 4.28997 26.59 1470.95 1020.878 32.25 32.20 7.580 2.79536 4.29006 26.59 1470.96 1020.879 32.55 32.50 7.578 2.79545 4.29039 26.59 1470.96 1020.882 32.85 32.80 7.576 2.79552 4.29072 26.59 1470.96 1020.885 33.15 33.10 7.578 2.79545 4.29033 26.59 1470.97 1020.885 33.40 33.35 7.583 2.79620 4.29095 26.59 1471.00 1020.889