*2026/01/16 10:37:53.43 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/07 21:49:06.000 END TIME : UTC 2025/05/07 21:49:19.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 67 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 19.97 2 Depth metres 0.15 19.91 3 Temperature 'deg C (ITS90)' 9.392 14.51 4 Conductivity S/m 2.1284 3.42543 5 Conductance:Specific S/m 2.70006 4.97724 6 Salinity PSS-78 16.38 31.61 7 Speed:Sound m/s 1482.81 1489.5 8 Density kg/m^3 1011.782 1024.491 $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 : 130 LATITUDE : 48 58.93540 N ! (deg min) LONGITUDE : 124 55.07000 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250507_214906 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:29 67 67 MERGEHDR 1.3 2026/01/16 10:35:43 67 67 HDREDIT2 3.2 2026/01/16 10:36:14 ? ? REMOVECH 8.2 2026/01/16 10:36:40 67 67 CALIB 12.1 2026/01/16 10:37:16 67 67 CLEAN 5.3 2026/01/16 10:37:53 67 67 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:14 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 10:36:40 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:16 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 14.510 2.14161 2.71022 16.46 1483.53 1011.817 0.45 0.45 14.414 2.12840 2.70006 16.38 1483.13 1011.782 0.75 0.76 14.379 2.13265 2.70783 16.44 1483.07 1011.828 1.05 1.06 14.328 2.13007 2.70808 16.43 1482.90 1011.838 1.35 1.36 14.285 2.13290 2.71465 16.48 1482.81 1011.880 1.65 1.66 13.995 2.22818 2.85699 17.41 1482.92 1012.651 1.95 1.96 13.039 2.69827 3.54674 22.02 1485.03 1016.365 2.25 2.26 12.741 3.12083 4.13453 26.05 1488.77 1019.531 2.55 2.56 12.382 3.27160 4.37585 27.71 1489.50 1020.878 2.85 2.86 11.660 3.32178 4.53051 28.73 1488.20 1021.798 3.15 3.16 11.020 3.36037 4.66453 29.61 1487.00 1022.591 3.45 3.46 10.772 3.37535 4.71781 29.96 1486.54 1022.905 3.75 3.76 10.609 3.37795 4.74305 30.11 1486.15 1023.058 4.05 4.06 10.416 3.38352 4.77683 30.33 1485.72 1023.259 4.35 4.36 10.200 3.38746 4.81172 30.55 1485.22 1023.467 4.65 4.66 10.060 3.39554 4.84246 30.75 1484.96 1023.647 4.95 4.96 9.969 3.39690 4.85707 30.84 1484.74 1023.734 5.25 5.25 9.888 3.39406 4.86421 30.88 1484.50 1023.780 5.55 5.55 9.831 3.39414 4.87226 30.93 1484.36 1023.829 5.85 5.85 9.761 3.39500 4.88332 31.00 1484.19 1023.895 6.15 6.15 9.706 3.39748 4.89459 31.07 1484.08 1023.962 6.45 6.45 9.682 3.39783 4.89857 31.10 1484.03 1023.986 6.75 6.75 9.669 3.39868 4.90162 31.12 1484.01 1024.005 7.05 7.05 9.661 3.40004 4.90475 31.14 1484.01 1024.024 7.35 7.35 9.658 3.40012 4.90527 31.14 1484.01 1024.028 7.65 7.64 9.651 3.40031 4.90654 31.15 1484.00 1024.037 7.95 7.94 9.626 3.40191 4.91232 31.19 1483.96 1024.072 8.25 8.24 9.608 3.40433 4.91847 31.23 1483.95 1024.108 8.55 8.54 9.584 3.40606 4.92439 31.26 1483.91 1024.143 8.85 8.84 9.560 3.40741 4.92974 31.30 1483.87 1024.175 9.15 9.14 9.549 3.40785 4.93186 31.31 1483.85 1024.188 9.45 9.44 9.525 3.40846 4.93624 31.34 1483.80 1024.215 9.75 9.73 9.516 3.40789 4.93666 31.34 1483.78 1024.219 10.05 10.03 9.510 3.40837 4.93827 31.35 1483.77 1024.230 10.35 10.33 9.506 3.40817 4.93845 31.35 1483.76 1024.232 10.65 10.63 9.500 3.40833 4.93963 31.36 1483.75 1024.240 10.95 10.93 9.489 3.40872 4.94171 31.37 1483.73 1024.253 11.25 11.23 9.480 3.40915 4.94362 31.38 1483.72 1024.266 11.55 11.53 9.470 3.40933 4.94533 31.40 1483.70 1024.277 11.85 11.82 9.456 3.41002 4.94834 31.41 1483.68 1024.295 12.15 12.12 9.450 3.41052 4.95000 31.43 1483.67 1024.306 12.45 12.42 9.433 3.40931 4.95062 31.43 1483.62 1024.312 12.75 12.72 9.416 3.40860 4.95199 31.43 1483.57 1024.321 13.05 13.02 9.407 3.40839 4.95308 31.44 1483.55 1024.329 13.35 13.32 9.403 3.40797 4.95298 31.44 1483.54 1024.330 13.65 13.62 9.396 3.40904 4.95557 31.46 1483.54 1024.346 13.95 13.91 9.393 3.40933 4.95640 31.46 1483.54 1024.352 14.25 14.21 9.392 3.40936 4.95660 31.46 1483.54 1024.354 14.55 14.51 9.393 3.41113 4.95910 31.48 1483.57 1024.369 14.85 14.81 9.394 3.41228 4.96051 31.49 1483.59 1024.378 15.15 15.11 9.396 3.41234 4.96038 31.49 1483.60 1024.379 15.45 15.41 9.397 3.41371 4.96222 31.50 1483.63 1024.390 15.75 15.71 9.399 3.41412 4.96248 31.50 1483.64 1024.393 16.05 16.00 9.401 3.41548 4.96419 31.52 1483.67 1024.403 16.35 16.30 9.405 3.41698 4.96587 31.53 1483.70 1024.414 16.65 16.60 9.406 3.41838 4.96764 31.54 1483.73 1024.424 16.95 16.90 9.411 3.41937 4.96849 31.55 1483.76 1024.430 17.25 17.20 9.414 3.41981 4.96867 31.55 1483.78 1024.432 17.55 17.50 9.414 3.42040 4.96954 31.56 1483.79 1024.438 17.85 17.79 9.418 3.42120 4.97008 31.56 1483.81 1024.442 18.15 18.09 9.421 3.42155 4.97009 31.56 1483.83 1024.443 18.45 18.39 9.423 3.42398 4.97332 31.58 1483.87 1024.462 18.75 18.69 9.430 3.42455 4.97324 31.58 1483.90 1024.463 19.05 18.99 9.426 3.42490 4.97423 31.59 1483.90 1024.470 19.35 19.29 9.426 3.42439 4.97359 31.59 1483.90 1024.468 19.65 19.59 9.408 3.42437 4.97611 31.60 1483.86 1024.484 19.97 19.91 9.411 3.42543 4.97724 31.61 1483.88 1024.491