*2026/01/16 10:37:58.38 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/22 21:02:57.000 END TIME : UTC 2025/07/22 21:03:12.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 76 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 22.51 2 Depth metres 0.15 22.4 3 Temperature 'deg C (ITS90)' 10.531 13.439 4 Conductivity S/m 3.55038 3.8153 5 Conductance:Specific S/m 4.91431 5.04755 6 Salinity PSS-78 31.61 32.33 7 Speed:Sound m/s 1488.32 1497.66 8 Density kg/m^3 1023.688 1024.785 $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 : 230 LATITUDE : 49 45.35610 N ! (deg min) LONGITUDE : 126 57.76340 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250722_210257 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:34 76 76 MERGEHDR 1.3 2026/01/16 10:35:48 76 76 HDREDIT2 3.2 2026/01/16 10:36:19 ? ? REMOVECH 8.2 2026/01/16 10:36:52 76 76 CALIB 12.1 2026/01/16 10:37:22 76 76 CLEAN 5.3 2026/01/16 10:37:58 76 76 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:19 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 10:36:52 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:22 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 13.216 3.81530 4.99175 32.15 1497.54 1024.143 0.45 0.45 13.304 3.79222 4.95017 31.86 1497.50 1023.903 0.75 0.75 13.439 3.77800 4.91431 31.61 1497.66 1023.688 1.05 1.05 13.288 3.78899 4.94806 31.84 1497.43 1023.896 1.35 1.34 13.123 3.76948 4.94387 31.80 1496.83 1023.895 1.65 1.64 13.162 3.76824 4.93721 31.75 1496.92 1023.854 1.95 1.94 13.080 3.75784 4.93408 31.72 1496.61 1023.848 2.25 2.24 13.028 3.75661 4.93930 31.75 1496.48 1023.885 2.55 2.54 12.913 3.76659 4.96745 31.95 1496.32 1024.056 2.85 2.84 12.817 3.77126 4.98617 32.07 1496.16 1024.173 3.15 3.14 12.729 3.77311 5.00024 32.16 1495.97 1024.263 3.45 3.43 12.651 3.77144 5.00844 32.21 1495.77 1024.318 3.75 3.73 12.592 3.75817 4.99863 32.14 1495.49 1024.272 4.05 4.03 12.502 3.74945 4.99903 32.13 1495.18 1024.286 4.35 4.33 12.418 3.72993 4.98414 32.02 1494.76 1024.214 4.65 4.63 12.372 3.72555 4.98443 32.01 1494.61 1024.222 4.95 4.93 12.314 3.71850 4.98266 31.99 1494.39 1024.220 5.25 5.23 12.242 3.71338 4.98546 32.01 1494.17 1024.245 5.55 5.52 12.176 3.70954 4.98922 32.03 1493.97 1024.274 5.85 5.82 12.120 3.70992 4.99719 32.08 1493.84 1024.326 6.15 6.12 12.080 3.70881 5.00107 32.10 1493.74 1024.353 6.45 6.42 12.045 3.70903 5.00612 32.13 1493.66 1024.385 6.75 6.72 12.018 3.70689 5.00691 32.14 1493.58 1024.394 7.05 7.02 11.997 3.70378 5.00552 32.12 1493.50 1024.390 7.35 7.32 11.972 3.70226 5.00690 32.13 1493.42 1024.401 7.65 7.61 11.945 3.70082 5.00855 32.14 1493.35 1024.414 7.95 7.91 11.932 3.70008 5.00936 32.15 1493.31 1024.422 8.25 8.21 11.914 3.69892 5.01023 32.15 1493.26 1024.430 8.55 8.51 11.892 3.69799 5.01197 32.16 1493.20 1024.443 8.85 8.81 11.873 3.69772 5.01419 32.17 1493.15 1024.458 9.15 9.11 11.856 3.69620 5.01437 32.17 1493.10 1024.462 9.45 9.40 11.833 3.69478 5.01553 32.18 1493.04 1024.472 9.75 9.70 11.815 3.69328 5.01602 32.18 1492.98 1024.478 10.05 10.00 11.795 3.69240 5.01756 32.19 1492.92 1024.490 10.35 10.30 11.779 3.69163 5.01867 32.19 1492.88 1024.499 10.65 10.60 11.769 3.68961 5.01727 32.18 1492.84 1024.493 10.95 10.90 11.761 3.69043 5.01946 32.20 1492.83 1024.507 11.25 11.20 11.749 3.68984 5.02034 32.20 1492.80 1024.515 11.55 11.49 11.739 3.68924 5.02087 32.21 1492.78 1024.520 11.85 11.79 11.723 3.68971 5.02369 32.22 1492.75 1024.538 12.15 12.09 11.704 3.68871 5.02489 32.23 1492.70 1024.548 12.45 12.39 11.666 3.68716 5.02808 32.25 1492.59 1024.571 12.75 12.69 11.638 3.68193 5.02469 32.22 1492.47 1024.556 13.05 12.99 11.615 3.67753 5.02182 32.20 1492.36 1024.544 13.35 13.29 11.584 3.67601 5.02408 32.21 1492.27 1024.560 13.65 13.58 11.556 3.67556 5.02733 32.23 1492.20 1024.582 13.95 13.88 11.535 3.67379 5.02773 32.23 1492.14 1024.588 14.25 14.18 11.517 3.67175 5.02751 32.23 1492.07 1024.590 14.55 14.48 11.495 3.67162 5.03031 32.24 1492.02 1024.609 14.85 14.78 11.477 3.67032 5.03101 32.25 1491.97 1024.615 15.15 15.08 11.457 3.66901 5.03194 32.25 1491.91 1024.624 15.45 15.37 11.434 3.66701 5.03238 32.25 1491.84 1024.629 15.75 15.67 11.419 3.66632 5.03348 32.26 1491.80 1024.638 16.05 15.97 11.401 3.66496 5.03409 32.26 1491.74 1024.644 16.35 16.27 11.389 3.66351 5.03383 32.26 1491.70 1024.645 16.65 16.57 11.377 3.66333 5.03527 32.27 1491.67 1024.656 16.95 16.87 11.366 3.66296 5.03628 32.27 1491.65 1024.664 17.25 17.16 11.353 3.66258 5.03746 32.28 1491.62 1024.673 17.55 17.46 11.346 3.66171 5.03728 32.28 1491.59 1024.673 17.85 17.76 11.341 3.66210 5.03855 32.28 1491.59 1024.682 18.15 18.06 11.335 3.66138 5.03841 32.28 1491.57 1024.683 18.45 18.36 11.325 3.66157 5.03996 32.29 1491.55 1024.694 18.75 18.66 11.319 3.66094 5.04001 32.29 1491.54 1024.696 19.05 18.96 11.308 3.66103 5.04159 32.30 1491.52 1024.707 19.35 19.25 11.282 3.65965 5.04337 32.31 1491.44 1024.721 19.65 19.55 11.253 3.65752 5.04437 32.32 1491.35 1024.730 19.95 19.85 11.206 3.65503 5.04755 32.33 1491.21 1024.753 20.25 20.15 11.175 3.64934 5.04401 32.30 1491.07 1024.737 20.55 20.45 11.193 3.64566 5.03640 32.25 1491.08 1024.695 20.85 20.75 11.172 3.62794 5.01481 32.09 1490.82 1024.579 21.15 21.04 11.067 3.61684 5.01407 32.08 1490.43 1024.585 21.45 21.34 10.982 3.60978 5.01608 32.08 1490.14 1024.605 21.75 21.64 10.843 3.60124 5.02369 32.12 1489.70 1024.659 22.05 21.94 10.709 3.59576 5.03485 32.18 1489.31 1024.733 22.35 22.24 10.575 3.58751 5.04214 32.22 1488.88 1024.785 22.51 22.40 10.531 3.55038 4.99615 31.89 1488.32 1024.535