*2026/01/16 09:57:49.64 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/04/25 17:01:51.000 END TIME : UTC 2024/04/25 17:02:02.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 57 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 17.07 2 Depth metres 0.15 17.08 3 Temperature 'deg C (ITS90)' 10.145 12.614 4 Conductivity S/m 1.60167 2.92674 5 Conductance:Specific S/m 2.16537 4.1584 6 Salinity PSS-78 12.81 25.99 7 Speed:Sound m/s 1470.37 1483.61 8 Density kg/m^3 1009.423 1019.983 $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 : 91 LATITUDE : 49 8.62700 N ! (deg min) LONGITUDE : 125 40.78190 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240425_170151 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 08:59:57 57 57 MERGEHDR 1.3 2026/01/16 09:53:50 57 57 HDREDIT2 3.2 2026/01/16 09:55:03 ? ? REMOVECH 8.2 2026/01/16 09:56:15 57 57 CALIB 12.1 2026/01/16 09:56:48 57 57 CLEAN 5.3 2026/01/16 09:57:49 57 57 $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 11.984 1.60167 2.16537 12.81 1470.37 1009.423 0.45 0.45 12.228 1.75075 2.35142 14.02 1472.70 1010.322 0.75 0.76 12.394 1.94796 2.60462 15.68 1475.27 1011.578 1.05 1.06 12.614 2.45507 3.26349 20.08 1481.25 1014.934 1.35 1.36 12.395 2.73216 3.65315 22.71 1483.59 1017.004 1.65 1.66 12.284 2.76151 3.70330 23.04 1483.61 1017.284 1.95 1.96 12.110 2.79965 3.77206 23.50 1483.55 1017.669 2.25 2.26 11.674 2.84280 3.87579 24.18 1482.82 1018.270 2.55 2.56 11.488 2.86291 3.92311 24.49 1482.53 1018.543 2.85 2.86 11.385 2.87196 3.94658 24.65 1482.35 1018.679 3.15 3.16 11.286 2.87547 3.96221 24.75 1482.12 1018.774 3.45 3.46 11.236 2.87669 3.96941 24.79 1482.00 1018.819 3.75 3.76 11.161 2.88566 3.99000 24.93 1481.90 1018.937 4.05 4.06 11.078 2.88507 3.99840 24.98 1481.66 1018.991 4.35 4.36 10.988 2.88473 4.00790 25.03 1481.41 1019.052 4.65 4.66 10.896 2.88222 4.01463 25.07 1481.13 1019.097 4.95 4.96 10.820 2.88236 4.02343 25.13 1480.93 1019.153 5.25 5.26 10.753 2.88439 4.03373 25.19 1480.77 1019.215 5.55 5.56 10.666 2.88667 4.04678 25.27 1480.56 1019.293 5.85 5.86 10.614 2.88880 4.05570 25.33 1480.44 1019.347 6.15 6.16 10.590 2.88983 4.05994 25.36 1480.39 1019.373 6.45 6.46 10.557 2.89047 4.06450 25.39 1480.31 1019.401 6.75 6.76 10.527 2.89120 4.06896 25.41 1480.24 1019.429 7.05 7.06 10.513 2.89147 4.07103 25.43 1480.20 1019.443 7.35 7.36 10.495 2.89299 4.07517 25.45 1480.18 1019.468 7.65 7.66 10.468 2.89439 4.08028 25.49 1480.12 1019.498 7.95 7.96 10.448 2.89708 4.08633 25.52 1480.10 1019.534 8.25 8.26 10.434 2.90055 4.09285 25.57 1480.11 1019.571 8.55 8.56 10.421 2.90510 4.10079 25.62 1480.13 1019.616 8.85 8.86 10.406 2.90675 4.10483 25.65 1480.11 1019.640 9.15 9.16 10.394 2.90738 4.10714 25.66 1480.09 1019.655 9.45 9.46 10.382 2.90745 4.10864 25.67 1480.06 1019.665 9.75 9.76 10.373 2.90857 4.11124 25.69 1480.06 1019.681 10.05 10.06 10.368 2.90988 4.11367 25.70 1480.06 1019.696 10.35 10.36 10.362 2.91065 4.11556 25.72 1480.06 1019.708 10.65 10.66 10.353 2.91072 4.11663 25.72 1480.04 1019.715 10.95 10.96 10.342 2.91179 4.11950 25.74 1480.02 1019.733 11.25 11.26 10.334 2.91265 4.12154 25.76 1480.02 1019.746 11.55 11.56 10.329 2.91362 4.12358 25.77 1480.02 1019.758 11.85 11.86 10.326 2.91360 4.12389 25.77 1480.02 1019.762 12.15 12.16 10.313 2.91475 4.12702 25.79 1480.00 1019.781 12.45 12.46 10.300 2.91542 4.12948 25.81 1479.97 1019.796 12.75 12.76 10.291 2.91556 4.13070 25.81 1479.96 1019.805 13.05 13.06 10.281 2.91486 4.13092 25.81 1479.92 1019.808 13.35 13.36 10.268 2.91559 4.13348 25.83 1479.90 1019.824 13.65 13.66 10.257 2.91596 4.13527 25.84 1479.88 1019.836 13.95 13.96 10.245 2.91616 4.13694 25.85 1479.85 1019.847 14.25 14.26 10.230 2.91528 4.13751 25.85 1479.81 1019.852 14.55 14.56 10.220 2.91535 4.13881 25.86 1479.78 1019.862 14.85 14.86 10.224 2.91855 4.14283 25.89 1479.84 1019.884 15.15 15.16 10.222 2.92130 4.14698 25.92 1479.87 1019.908 15.45 15.46 10.224 2.92635 4.15394 25.97 1479.94 1019.946 15.75 15.76 10.240 2.92674 4.15256 25.96 1479.99 1019.939 16.05 16.06 10.243 2.92530 4.15017 25.94 1479.99 1019.927 16.35 16.36 10.228 2.92251 4.14803 25.93 1479.92 1019.918 16.65 16.66 10.166 2.92136 4.15362 25.96 1479.74 1019.954 17.07 17.08 10.145 2.92296 4.15840 25.99 1479.70 1019.983