*2026/01/16 10:37:52.60 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/28 22:44:15.000 END TIME : UTC 2025/04/28 22:44:29.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 71 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 21.25 2 Depth metres 0.15 21.27 3 Temperature 'deg C (ITS90)' 9.159 13.358 4 Conductivity S/m 1.13244 2.76862 5 Conductance:Specific S/m 1.47615 4.02303 6 Salinity PSS-78 8.49 24.98 7 Speed:Sound m/s 1470.21 1481.53 8 Density kg/m^3 1005.889 1019.328 $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 : 114 LATITUDE : 49 8.70800 N ! (deg min) LONGITUDE : 125 40.81580 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250428_224415 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:28 71 71 MERGEHDR 1.3 2026/01/16 10:35:42 71 71 HDREDIT2 3.2 2026/01/16 10:36:13 ? ? REMOVECH 8.2 2026/01/16 10:36:40 71 71 CALIB 12.1 2026/01/16 10:37:15 71 71 CLEAN 5.3 2026/01/16 10:37:52 71 71 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:13 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 10:37:15 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 13.358 1.13244 1.47615 8.49 1470.21 1005.889 0.45 0.45 12.733 2.17699 2.88477 17.55 1478.67 1012.961 0.75 0.76 12.386 2.50407 3.34898 20.64 1481.10 1015.406 1.05 1.06 12.209 2.58052 3.46757 21.43 1481.42 1016.049 1.35 1.36 12.032 2.63676 3.56011 22.05 1481.53 1016.557 1.65 1.66 11.832 2.67382 3.62975 22.51 1481.38 1016.947 1.95 1.96 11.670 2.67066 3.64148 22.58 1480.89 1017.028 2.25 2.26 11.479 2.66685 3.65536 22.66 1480.30 1017.123 2.55 2.56 11.317 2.66212 3.66512 22.71 1479.79 1017.192 2.85 2.86 11.220 2.66092 3.67331 22.76 1479.50 1017.246 3.15 3.16 11.145 2.66042 3.68024 22.80 1479.29 1017.292 3.45 3.46 11.068 2.66087 3.68867 22.86 1479.08 1017.345 3.75 3.76 10.990 2.66155 3.69765 22.91 1478.86 1017.401 4.05 4.06 10.855 2.66019 3.70961 22.98 1478.46 1017.478 4.35 4.36 10.612 2.65624 3.72939 23.10 1477.72 1017.606 4.65 4.67 10.427 2.65110 3.74163 23.16 1477.13 1017.688 4.95 4.97 10.250 2.64643 3.75377 23.23 1476.56 1017.768 5.25 5.27 10.096 2.64428 3.76723 23.31 1476.09 1017.853 5.55 5.57 9.887 2.64084 3.78487 23.41 1475.44 1017.964 5.85 5.87 9.723 2.63989 3.80137 23.51 1474.95 1018.064 6.15 6.17 9.636 2.64313 3.81560 23.60 1474.74 1018.147 6.45 6.47 9.533 2.64428 3.82860 23.68 1474.45 1018.224 6.75 6.77 9.427 2.64718 3.84465 23.77 1474.18 1018.317 7.05 7.07 9.370 2.64983 3.85489 23.84 1474.04 1018.377 7.35 7.37 9.309 2.65335 3.86686 23.91 1473.91 1018.445 7.65 7.67 9.271 2.65878 3.87905 23.99 1473.87 1018.513 7.95 7.97 9.296 2.66224 3.88122 24.01 1473.99 1018.525 8.25 8.27 9.328 2.67623 3.89799 24.13 1474.26 1018.613 8.55 8.57 9.345 2.68505 3.90893 24.20 1474.42 1018.671 8.85 8.87 9.369 2.68935 3.91246 24.23 1474.55 1018.690 9.15 9.17 9.374 2.68946 3.91208 24.23 1474.57 1018.689 9.45 9.47 9.374 2.68687 3.90831 24.20 1474.54 1018.670 9.75 9.77 9.368 2.68987 3.91331 24.24 1474.57 1018.698 10.05 10.07 9.345 2.69386 3.92180 24.29 1474.55 1018.746 10.35 10.37 9.326 2.69257 3.92203 24.29 1474.48 1018.750 10.65 10.67 9.297 2.68796 3.91866 24.26 1474.35 1018.735 10.95 10.97 9.268 2.68616 3.91932 24.27 1474.25 1018.741 11.25 11.27 9.244 2.68748 3.92396 24.29 1474.20 1018.769 11.55 11.57 9.225 2.68988 3.92974 24.33 1474.17 1018.802 11.85 11.87 9.225 2.69144 3.93196 24.35 1474.20 1018.815 12.15 12.17 9.230 2.69334 3.93415 24.36 1474.24 1018.828 12.45 12.47 9.235 2.69931 3.94229 24.42 1474.33 1018.872 12.75 12.77 9.238 2.70606 3.95185 24.48 1474.43 1018.924 13.05 13.07 9.249 2.70711 3.95205 24.49 1474.48 1018.925 13.35 13.37 9.230 2.70442 3.95032 24.47 1474.39 1018.919 13.65 13.67 9.198 2.70215 3.95075 24.47 1474.28 1018.924 13.95 13.97 9.174 2.70011 3.95057 24.47 1474.18 1018.926 14.25 14.27 9.159 2.70040 3.95271 24.48 1474.15 1018.940 14.55 14.57 9.165 2.70252 3.95509 24.50 1474.20 1018.953 14.85 14.87 9.174 2.70565 3.95859 24.52 1474.27 1018.972 15.15 15.17 9.187 2.70786 3.96034 24.54 1474.34 1018.982 15.45 15.47 9.201 2.71246 3.96543 24.57 1474.44 1019.010 15.75 15.77 9.205 2.71641 3.97072 24.61 1474.50 1019.039 16.05 16.07 9.215 2.71868 3.97291 24.62 1474.57 1019.051 16.35 16.37 9.228 2.72111 3.97495 24.64 1474.64 1019.063 16.65 16.67 9.234 2.72151 3.97492 24.64 1474.66 1019.064 16.95 16.97 9.239 2.72431 3.97839 24.66 1474.72 1019.083 17.25 17.27 9.245 2.72628 3.98055 24.68 1474.76 1019.095 17.55 17.57 9.255 2.72724 3.98082 24.68 1474.81 1019.098 17.85 17.87 9.268 2.73257 3.98711 24.73 1474.92 1019.132 18.15 18.17 9.276 2.73631 3.99154 24.76 1474.99 1019.156 18.45 18.47 9.290 2.73804 3.99252 24.76 1475.06 1019.162 18.75 18.77 9.301 2.73869 3.99212 24.76 1475.10 1019.160 19.05 19.07 9.309 2.73982 3.99289 24.77 1475.14 1019.165 19.35 19.37 9.307 2.74066 3.99431 24.78 1475.15 1019.174 19.65 19.67 9.308 2.74255 3.99696 24.80 1475.18 1019.189 19.95 19.97 9.313 2.74687 4.00268 24.84 1475.25 1019.221 20.25 20.27 9.322 2.75448 4.01266 24.90 1475.38 1019.275 20.55 20.57 9.355 2.76137 4.01885 24.95 1475.56 1019.307 20.85 20.87 9.394 2.76734 4.02303 24.98 1475.75 1019.328 21.25 21.27 9.415 2.76862 4.02242 24.98 1475.84 1019.325