*2026/01/16 09:57:48.78 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/04/23 21:29:48.000 END TIME : UTC 2024/04/23 21:30:07.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 97 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 29.02 2 Depth metres 0.15 28.89 3 Temperature 'deg C (ITS90)' 9.922 12.214 4 Conductivity S/m 3.38632 3.48641 5 Conductance:Specific S/m 4.56348 4.99153 6 Salinity PSS-78 29.01 31.77 7 Speed:Sound m/s 1485.57 1490.43 8 Density kg/m^3 1021.908 1024.578 $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 : 2024-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 79 LATITUDE : 48 57.88910 N ! (deg min) LONGITUDE : 125 19.34950 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240423_212948 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 08:59:57 97 97 MERGEHDR 1.3 2026/01/16 09:53:49 97 97 HDREDIT2 3.2 2026/01/16 09:55:03 ? ? REMOVECH 8.2 2026/01/16 09:56:15 97 97 CALIB 12.1 2026/01/16 09:56:48 97 97 CLEAN 5.3 2026/01/16 09:57:48 97 97 $END $REMARKS -HEADER EDITS: 2026/01/16 09:55:03 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 09:56:15 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:56:48 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 09:57:46 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 12.214 3.39692 4.56401 29.02 1490.43 1021.910 0.45 0.45 12.214 3.39652 4.56348 29.01 1490.43 1021.908 0.75 0.75 12.208 3.39650 4.56418 29.02 1490.42 1021.914 1.05 1.05 12.204 3.39604 4.56406 29.02 1490.41 1021.915 1.35 1.35 12.199 3.39591 4.56452 29.02 1490.40 1021.920 1.65 1.65 12.195 3.39579 4.56484 29.02 1490.39 1021.923 1.95 1.95 12.190 3.39545 4.56501 29.02 1490.38 1021.926 2.25 2.24 12.182 3.39511 4.56556 29.02 1490.36 1021.931 2.55 2.54 12.176 3.39512 4.56630 29.03 1490.35 1021.937 2.85 2.84 12.176 3.39534 4.56658 29.03 1490.36 1021.940 3.15 3.14 12.174 3.39536 4.56684 29.03 1490.36 1021.943 3.45 3.44 12.158 3.39402 4.56696 29.03 1490.31 1021.946 3.75 3.74 12.129 3.39249 4.56849 29.04 1490.22 1021.959 4.05 4.04 12.016 3.39055 4.57980 29.11 1489.92 1022.034 4.35 4.34 11.795 3.38822 4.60420 29.26 1489.33 1022.192 4.65 4.64 11.565 3.38632 4.63048 29.42 1488.73 1022.360 4.95 4.94 11.427 3.38680 4.64877 29.54 1488.38 1022.475 5.25 5.24 11.328 3.38817 4.66337 29.63 1488.15 1022.566 5.55 5.54 11.173 3.39040 4.68632 29.78 1487.79 1022.707 5.85 5.83 11.084 3.39129 4.69910 29.86 1487.57 1022.786 6.15 6.13 10.982 3.39292 4.71481 29.96 1487.33 1022.882 6.45 6.43 10.915 3.39674 4.72881 30.05 1487.21 1022.966 6.75 6.73 10.861 3.39947 4.73982 30.12 1487.11 1023.032 7.05 7.03 10.798 3.40086 4.75009 30.18 1486.97 1023.095 7.35 7.33 10.740 3.40384 4.76199 30.26 1486.86 1023.166 7.65 7.63 10.671 3.40867 4.77789 30.37 1486.74 1023.260 7.95 7.93 10.619 3.40993 4.78674 30.42 1486.63 1023.314 8.25 8.23 10.576 3.41161 4.79480 30.47 1486.54 1023.363 8.55 8.52 10.554 3.41351 4.80043 30.51 1486.51 1023.397 8.85 8.82 10.534 3.41577 4.80638 30.55 1486.49 1023.433 9.15 9.12 10.476 3.42274 4.82398 30.67 1486.43 1023.535 9.45 9.42 10.403 3.42588 4.83839 30.76 1486.29 1023.621 9.75 9.72 10.331 3.42828 4.85171 30.85 1486.14 1023.700 10.05 10.02 10.280 3.42976 4.86081 30.90 1486.03 1023.755 10.35 10.32 10.248 3.43034 4.86603 30.94 1485.96 1023.788 10.65 10.62 10.219 3.43082 4.87071 30.97 1485.89 1023.817 10.95 10.91 10.205 3.43161 4.87374 30.99 1485.87 1023.836 11.25 11.21 10.201 3.43226 4.87522 31.00 1485.87 1023.845 11.55 11.51 10.196 3.43218 4.87580 31.00 1485.86 1023.850 11.85 11.81 10.188 3.43166 4.87624 31.00 1485.84 1023.854 12.15 12.11 10.166 3.43284 4.88096 31.03 1485.80 1023.883 12.45 12.41 10.154 3.43303 4.88278 31.04 1485.78 1023.895 12.75 12.71 10.139 3.43481 4.88740 31.07 1485.77 1023.923 13.05 13.01 10.113 3.43494 4.89128 31.10 1485.71 1023.947 13.35 13.30 10.099 3.43685 4.89590 31.13 1485.70 1023.975 13.65 13.60 10.092 3.43943 4.90059 31.16 1485.72 1024.002 13.95 13.90 10.077 3.43959 4.90295 31.17 1485.68 1024.018 14.25 14.20 10.052 3.44049 4.90776 31.20 1485.64 1024.047 14.55 14.50 10.031 3.44263 4.91376 31.24 1485.61 1024.083 14.85 14.80 10.012 3.44343 4.91745 31.27 1485.58 1024.105 15.15 15.10 10.006 3.44369 4.91865 31.28 1485.57 1024.114 15.45 15.39 10.003 3.44448 4.92028 31.29 1485.58 1024.124 15.75 15.69 9.999 3.44534 4.92210 31.30 1485.58 1024.136 16.05 15.99 9.986 3.44866 4.92864 31.34 1485.60 1024.174 16.35 16.29 9.971 3.45026 4.93307 31.37 1485.58 1024.200 16.65 16.59 9.964 3.45200 4.93646 31.40 1485.59 1024.221 16.95 16.89 9.955 3.45426 4.94094 31.43 1485.60 1024.247 17.25 17.19 9.947 3.45842 4.94808 31.47 1485.63 1024.288 17.55 17.49 9.941 3.46107 4.95276 31.51 1485.66 1024.316 17.85 17.78 9.937 3.46299 4.95598 31.53 1485.68 1024.335 18.15 18.08 9.938 3.46480 4.95843 31.55 1485.70 1024.350 18.45 18.38 9.936 3.46642 4.96106 31.56 1485.72 1024.365 18.75 18.68 9.935 3.46784 4.96332 31.58 1485.74 1024.379 19.05 18.98 9.936 3.46960 4.96563 31.60 1485.77 1024.393 19.35 19.28 9.940 3.47057 4.96651 31.60 1485.80 1024.399 19.65 19.57 9.934 3.47080 4.96766 31.61 1485.79 1024.407 19.95 19.87 9.934 3.47185 4.96916 31.62 1485.81 1024.417 20.25 20.17 9.933 3.47283 4.97067 31.63 1485.82 1024.426 20.55 20.47 9.935 3.47351 4.97146 31.64 1485.84 1024.432 20.85 20.77 9.940 3.47490 4.97267 31.65 1485.88 1024.439 21.15 21.07 9.937 3.47481 4.97298 31.65 1485.87 1024.443 21.45 21.37 9.934 3.47450 4.97301 31.65 1485.86 1024.444 21.75 21.66 9.935 3.47514 4.97375 31.65 1485.88 1024.449 22.05 21.96 9.934 3.47880 4.97906 31.69 1485.93 1024.480 22.35 22.26 9.932 3.48035 4.98162 31.71 1485.95 1024.495 22.65 22.56 9.932 3.48091 4.98247 31.71 1485.96 1024.501 22.95 22.86 9.937 3.48126 4.98223 31.71 1485.98 1024.501 23.25 23.16 9.933 3.48134 4.98283 31.72 1485.98 1024.506 23.55 23.46 9.931 3.48099 4.98271 31.71 1485.97 1024.507 23.85 23.75 9.935 3.48123 4.98249 31.71 1485.99 1024.506 24.15 24.05 9.936 3.48145 4.98257 31.71 1486.00 1024.508 24.45 24.35 9.932 3.48171 4.98352 31.72 1486.00 1024.515 24.75 24.65 9.928 3.48203 4.98458 31.73 1485.99 1024.522 25.05 24.95 9.930 3.48254 4.98510 31.73 1486.01 1024.526 25.35 25.25 9.932 3.48298 4.98540 31.73 1486.03 1024.529 25.65 25.55 9.929 3.48362 4.98671 31.74 1486.03 1024.538 25.95 25.84 9.927 3.48335 4.98663 31.74 1486.03 1024.539 26.25 26.14 9.928 3.48464 4.98836 31.75 1486.05 1024.549 26.55 26.44 9.932 3.48579 4.98946 31.76 1486.08 1024.556 26.85 26.74 9.937 3.48600 4.98898 31.76 1486.10 1024.555 27.15 27.04 9.937 3.48568 4.98851 31.76 1486.10 1024.553 27.45 27.34 9.932 3.48571 4.98930 31.76 1486.09 1024.559 27.75 27.63 9.928 3.48599 4.99026 31.77 1486.09 1024.566 28.05 27.93 9.928 3.48599 4.99031 31.77 1486.10 1024.568 28.35 28.23 9.924 3.48637 4.99133 31.77 1486.10 1024.575 28.65 28.53 9.922 3.48629 4.99153 31.77 1486.09 1024.577 29.02 28.89 9.925 3.48641 4.99132 31.77 1486.11 1024.578