*2026/01/16 10:37:56.58 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/24 22:16:38.000 END TIME : UTC 2025/06/24 22:16:53.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 77 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 22.85 2 Depth metres 0.15 22.77 3 Temperature 'deg C (ITS90)' 12.376 12.799 4 Conductivity S/m 3.58052 3.58936 5 Conductance:Specific S/m 4.74588 4.80035 6 Salinity PSS-78 30.36 30.7 7 Speed:Sound m/s 1493.35 1494.02 8 Density kg/m^3 1022.838 1023.282 $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 : 2025-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 189 LATITUDE : 49 12.80400 N ! (deg min) LONGITUDE : 125 55.99560 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250624_221638 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:32 77 77 MERGEHDR 1.3 2026/01/16 10:35:46 77 77 HDREDIT2 3.2 2026/01/16 10:36:17 ? ? REMOVECH 8.2 2026/01/16 10:36:48 77 77 CALIB 12.1 2026/01/16 10:37:19 77 77 CLEAN 5.3 2026/01/16 10:37:56 77 77 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:17 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 2026/01/16 10:36:48 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:19 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 10:37:42 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 12.799 3.58779 4.74588 30.36 1494.02 1022.838 0.45 0.45 12.761 3.58539 4.74751 30.36 1493.90 1022.853 0.75 0.75 12.714 3.58298 4.75019 30.38 1493.77 1022.874 1.05 1.05 12.685 3.58128 4.75163 30.39 1493.68 1022.887 1.35 1.35 12.675 3.58052 4.75183 30.39 1493.65 1022.890 1.65 1.64 12.691 3.58086 4.75025 30.38 1493.70 1022.881 1.95 1.94 12.706 3.58099 4.74852 30.37 1493.75 1022.871 2.25 2.24 12.695 3.58102 4.74993 30.37 1493.72 1022.881 2.55 2.54 12.688 3.58164 4.75174 30.39 1493.72 1022.893 2.85 2.84 12.675 3.58107 4.75264 30.39 1493.68 1022.901 3.15 3.14 12.658 3.58144 4.75524 30.41 1493.65 1022.919 3.45 3.44 12.647 3.58150 4.75673 30.42 1493.63 1022.929 3.75 3.74 12.639 3.58114 4.75724 30.42 1493.61 1022.934 4.05 4.04 12.636 3.58059 4.75692 30.42 1493.60 1022.934 4.35 4.34 12.633 3.58110 4.75796 30.43 1493.61 1022.942 4.65 4.63 12.628 3.58121 4.75877 30.43 1493.60 1022.948 4.95 4.93 12.625 3.58149 4.75946 30.43 1493.60 1022.953 5.25 5.23 12.621 3.58170 4.76027 30.44 1493.60 1022.960 5.55 5.53 12.616 3.58141 4.76043 30.44 1493.59 1022.962 5.85 5.83 12.611 3.58176 4.76165 30.45 1493.58 1022.971 6.15 6.13 12.605 3.58136 4.76177 30.45 1493.57 1022.973 6.45 6.43 12.601 3.58119 4.76209 30.45 1493.56 1022.977 6.75 6.73 12.598 3.58072 4.76186 30.45 1493.55 1022.977 7.05 7.03 12.595 3.58097 4.76255 30.45 1493.56 1022.983 7.35 7.32 12.592 3.58146 4.76355 30.46 1493.56 1022.990 7.65 7.62 12.589 3.58187 4.76456 30.47 1493.56 1022.997 7.95 7.92 12.584 3.58067 4.76359 30.46 1493.54 1022.994 8.25 8.22 12.579 3.58153 4.76537 30.47 1493.54 1023.005 8.55 8.52 12.574 3.58209 4.76670 30.48 1493.54 1023.014 8.85 8.82 12.573 3.58200 4.76675 30.48 1493.54 1023.016 9.15 9.12 12.573 3.58261 4.76757 30.49 1493.55 1023.022 9.45 9.42 12.571 3.58241 4.76747 30.49 1493.55 1023.023 9.75 9.72 12.570 3.58313 4.76863 30.49 1493.56 1023.030 10.05 10.01 12.564 3.58239 4.76842 30.49 1493.54 1023.031 10.35 10.31 12.561 3.58353 4.77023 30.50 1493.55 1023.043 10.65 10.61 12.559 3.58349 4.77044 30.50 1493.55 1023.045 10.95 10.91 12.556 3.58331 4.77058 30.51 1493.55 1023.048 11.25 11.21 12.556 3.58407 4.77159 30.51 1493.56 1023.055 11.55 11.51 12.554 3.58437 4.77223 30.52 1493.57 1023.060 11.85 11.81 12.552 3.58570 4.77432 30.53 1493.58 1023.073 12.15 12.11 12.550 3.58565 4.77454 30.53 1493.58 1023.075 12.45 12.41 12.548 3.58627 4.77557 30.54 1493.59 1023.082 12.75 12.71 12.548 3.58710 4.77665 30.55 1493.60 1023.090 13.05 13.00 12.548 3.58689 4.77637 30.54 1493.60 1023.089 13.35 13.30 12.549 3.58711 4.77663 30.55 1493.61 1023.092 13.65 13.60 12.550 3.58765 4.77716 30.55 1493.63 1023.096 13.95 13.90 12.550 3.58792 4.77756 30.55 1493.63 1023.099 14.25 14.20 12.544 3.58748 4.77767 30.55 1493.62 1023.102 14.55 14.50 12.541 3.58751 4.77813 30.56 1493.62 1023.106 14.85 14.80 12.538 3.58802 4.77919 30.56 1493.62 1023.114 15.15 15.10 12.538 3.58792 4.77907 30.56 1493.62 1023.114 15.45 15.40 12.541 3.58852 4.77941 30.56 1493.64 1023.117 15.75 15.69 12.542 3.58794 4.77851 30.56 1493.64 1023.113 16.05 15.99 12.541 3.58886 4.77987 30.57 1493.66 1023.122 16.35 16.29 12.539 3.58875 4.78000 30.57 1493.65 1023.124 16.65 16.59 12.536 3.58858 4.78017 30.57 1493.65 1023.127 16.95 16.89 12.536 3.58936 4.78120 30.58 1493.66 1023.134 17.25 17.19 12.533 3.58915 4.78132 30.58 1493.66 1023.136 17.55 17.49 12.528 3.58916 4.78197 30.58 1493.65 1023.141 17.85 17.79 12.525 3.58901 4.78222 30.58 1493.65 1023.145 18.15 18.09 12.518 3.58932 4.78340 30.59 1493.64 1023.153 18.45 18.38 12.507 3.58808 4.78321 30.59 1493.60 1023.155 18.75 18.68 12.494 3.58801 4.78473 30.60 1493.58 1023.166 19.05 18.98 12.487 3.58797 4.78557 30.60 1493.56 1023.172 19.35 19.28 12.477 3.58715 4.78581 30.60 1493.53 1023.176 19.65 19.58 12.454 3.58682 4.78826 30.62 1493.48 1023.193 19.95 19.88 12.441 3.58688 4.79005 30.63 1493.45 1023.206 20.25 20.18 12.446 3.58703 4.78956 30.63 1493.47 1023.204 20.55 20.48 12.447 3.58753 4.79012 30.63 1493.48 1023.208 20.85 20.78 12.446 3.58689 4.78946 30.63 1493.48 1023.206 21.15 21.07 12.444 3.58663 4.78930 30.62 1493.48 1023.207 21.45 21.37 12.437 3.58788 4.79193 30.64 1493.48 1023.223 21.75 21.67 12.425 3.58654 4.79161 30.64 1493.44 1023.224 22.05 21.97 12.409 3.58627 4.79335 30.65 1493.40 1023.237 22.35 22.27 12.395 3.58688 4.79597 30.67 1493.38 1023.254 22.65 22.57 12.385 3.58824 4.79898 30.69 1493.37 1023.273 22.85 22.77 12.376 3.58833 4.80035 30.70 1493.35 1023.282