*2026/01/16 09:47:01.66 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/08/29 18:51:30.000 END TIME : UTC 2023/08/29 18:51:37.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 39 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 11.58 2 Depth metres 0.15 11.54 3 Temperature 'deg C (ITS90)' 13.535 15.46 4 Conductivity S/m 3.75804 3.86857 5 Conductance:Specific S/m 4.64418 4.92813 6 Salinity PSS-78 29.83 31.72 7 Speed:Sound m/s 1498.28 1502.13 8 Density kg/m^3 1021.894 1023.797 $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 : 2023-031 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 7 LATITUDE : 49 24.66080 N ! (deg min) LONGITUDE : 126 7.22080 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230829_185130 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 39 39 MERGEHDR 1.3 2026/01/15 13:41:46 39 39 HDREDIT2 3.2 2026/01/15 14:00:53 ? ? REMOVECH 8.2 2026/01/15 14:01:17 39 39 CALIB 12.1 2026/01/16 09:45:59 39 39 CLEAN 5.3 2026/01/16 09:47:01 39 39 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:53 Applied edit header: C:\Users\huntingtons\Desktop\Misc_Projects\Castaway\castaway2023_HDR.txt Channel 2: Depth [metres] Format: F10.6 ==> F7.2 Channel 3: Temperature [deg C (ITS90)] Format: F14.6 ==> F8.3 Channel 4: Conductivity [mS/cm] Units: ms/cm ==> mS/cm Format: F14.6 ==> F9.1 Channel 5: Conductance:Specific [mS/cm] Name: Specific Conductance ==> Conductance:Specific Units: ms/cm ==> mS/cm Format: F14.6 ==> F9.1 Channel 6: Salinity [PSS-78] Format: F14.6 ==> F7.2 Channel 7: Speed:Sound [m/s] Name: Sound Velocity ==> Speed:Sound Format: F14.6 ==> F8.2 Channel 8: Density [kg/m^3] Format: F14.6 ==> F9.3 -REMOVECH 2026/01/15 14:01:17 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:45:59 Calibration type = Correct Mode: ONLY - calibration specs from Cal File only. Calibration file = C:\Users\huntingtons\Desktop\Misc_Projects\Castaway\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 -CLEAN functions: 2026/01/16 09:47:01 20 Reset #RECS, MIN & MAX values in header. Set header Start and End times from the data. $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. Calibration dates were taken from the original data file header: % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2020-03-13 % Temperature calibration date,2020-03-12 % Pressure calibration date,2020-03-04 % *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 15.460 3.75804 4.64418 29.83 1502.13 1021.894 0.45 0.45 15.087 3.80504 4.74600 30.53 1501.76 1022.516 0.75 0.75 14.873 3.82596 4.79772 30.89 1501.50 1022.837 1.05 1.05 14.749 3.86857 4.86627 31.37 1501.67 1023.236 1.35 1.35 14.563 3.86696 4.88703 31.51 1501.23 1023.380 1.65 1.64 14.443 3.86316 4.89713 31.57 1500.92 1023.455 1.95 1.94 14.362 3.85868 4.90148 31.60 1500.69 1023.493 2.25 2.24 14.371 3.85729 4.89864 31.58 1500.70 1023.477 2.55 2.54 14.395 3.85426 4.89178 31.53 1500.73 1023.437 2.85 2.84 14.366 3.83854 4.87545 31.41 1500.50 1023.352 3.15 3.14 14.185 3.83329 4.89124 31.51 1500.03 1023.467 3.45 3.44 14.056 3.83008 4.90331 31.58 1499.71 1023.554 3.75 3.74 14.019 3.82673 4.90369 31.58 1499.59 1023.562 4.05 4.03 14.019 3.82734 4.90452 31.59 1499.60 1023.568 4.35 4.33 14.009 3.82559 4.90352 31.58 1499.56 1023.565 4.65 4.63 13.978 3.82345 4.90456 31.59 1499.47 1023.576 4.95 4.93 13.939 3.82174 4.90728 31.60 1499.37 1023.598 5.25 5.23 13.915 3.81834 4.90601 31.59 1499.28 1023.596 5.55 5.53 13.899 3.81785 4.90739 31.60 1499.24 1023.607 5.85 5.83 13.875 3.81663 4.90880 31.61 1499.18 1023.620 6.15 6.13 13.835 3.81493 4.91169 31.63 1499.07 1023.642 6.45 6.42 13.802 3.81176 4.91183 31.62 1498.97 1023.649 6.75 6.72 13.750 3.80934 4.91526 31.64 1498.83 1023.676 7.05 7.02 13.721 3.80718 4.91616 31.65 1498.74 1023.686 7.35 7.32 13.702 3.80640 4.91761 31.66 1498.69 1023.698 7.65 7.62 13.690 3.80454 4.91664 31.65 1498.65 1023.696 7.95 7.92 13.677 3.80457 4.91839 31.66 1498.62 1023.709 8.25 8.22 13.665 3.80301 4.91793 31.65 1498.58 1023.709 8.55 8.52 13.638 3.80232 4.92041 31.67 1498.52 1023.728 8.85 8.81 13.620 3.80108 4.92110 31.67 1498.47 1023.735 9.15 9.11 13.614 3.80065 4.92131 31.67 1498.45 1023.738 9.45 9.41 13.606 3.80121 4.92310 31.69 1498.44 1023.751 9.75 9.71 13.596 3.80020 4.92305 31.69 1498.42 1023.753 10.05 10.01 13.587 3.79901 4.92263 31.68 1498.39 1023.753 10.35 10.31 13.580 3.79947 4.92417 31.69 1498.38 1023.764 10.65 10.61 13.582 3.79894 4.92318 31.68 1498.38 1023.759 10.95 10.91 13.589 3.79973 4.92337 31.69 1498.41 1023.761 11.25 11.20 13.557 3.79807 4.92530 31.70 1498.32 1023.777 11.58 11.54 13.535 3.79810 4.92813 31.72 1498.28 1023.797