*2026/01/16 10:37:49.41 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/03/10 23:28:32.000 END TIME : UTC 2025/03/10 23:28:45.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 68 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.13 2 Depth metres 0.15 20.11 3 Temperature 'deg C (ITS90)' 8.089 8.524 4 Conductivity S/m 1.6533 2.89665 5 Conductance:Specific S/m 2.49646 4.32155 6 Salinity PSS-78 14.75 26.93 7 Speed:Sound m/s 1457.94 1474.79 8 Density kg/m^3 1011.409 1020.967 $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 : 72 LATITUDE : 49 9.05340 N ! (deg min) LONGITUDE : 125 47.34510 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250310_232832 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:26 68 68 MERGEHDR 1.3 2026/01/16 10:35:40 68 68 HDREDIT2 3.2 2026/01/16 10:36:11 ? ? REMOVECH 8.2 2026/01/16 10:36:38 68 68 CALIB 12.1 2026/01/16 10:37:13 68 68 CLEAN 5.3 2026/01/16 10:37:49 68 68 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:11 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 10:36:38 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:13 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 8.113 1.65330 2.49646 14.75 1457.94 1011.409 0.45 0.45 8.089 1.72846 2.61187 15.49 1458.76 1011.992 0.75 0.76 8.133 1.92620 2.90673 17.41 1461.31 1013.487 1.05 1.06 8.206 2.07242 3.12056 18.82 1463.33 1014.581 1.35 1.36 8.307 2.39773 3.59939 22.01 1467.65 1017.063 1.65 1.66 8.331 2.60403 3.90628 24.08 1470.29 1018.680 1.95 1.96 8.322 2.67785 4.01817 24.84 1471.19 1019.275 2.25 2.26 8.341 2.72043 4.07969 25.26 1471.79 1019.603 2.55 2.56 8.410 2.74220 4.10386 25.43 1472.27 1019.730 2.85 2.86 8.438 2.74442 4.10378 25.44 1472.38 1019.730 3.15 3.16 8.459 2.76053 4.12524 25.58 1472.65 1019.845 3.45 3.46 8.474 2.76716 4.13333 25.64 1472.78 1019.889 3.75 3.76 8.480 2.76729 4.13277 25.64 1472.81 1019.887 4.05 4.06 8.489 2.78097 4.15212 25.77 1473.01 1019.991 4.35 4.36 8.494 2.78928 4.16379 25.85 1473.14 1020.055 4.65 4.66 8.498 2.78932 4.16341 25.85 1473.15 1020.054 4.95 4.96 8.497 2.78975 4.16422 25.85 1473.16 1020.060 5.25 5.26 8.499 2.79652 4.17408 25.92 1473.25 1020.113 5.55 5.56 8.500 2.80093 4.18048 25.97 1473.32 1020.149 5.85 5.86 8.502 2.80276 4.18296 25.98 1473.35 1020.163 6.15 6.16 8.505 2.80679 4.18861 26.02 1473.42 1020.195 6.45 6.46 8.508 2.81687 4.20324 26.12 1473.56 1020.274 6.75 6.76 8.514 2.82885 4.22046 26.24 1473.73 1020.367 7.05 7.06 8.518 2.84290 4.24084 26.38 1473.92 1020.478 7.35 7.36 8.520 2.85169 4.25373 26.47 1474.04 1020.548 7.65 7.65 8.524 2.85380 4.25637 26.49 1474.08 1020.563 7.95 7.95 8.524 2.85953 4.26492 26.55 1474.16 1020.610 8.25 8.25 8.523 2.86337 4.27071 26.59 1474.21 1020.643 8.55 8.55 8.522 2.86116 4.26754 26.56 1474.19 1020.627 8.85 8.85 8.524 2.86029 4.26602 26.55 1474.18 1020.620 9.15 9.15 8.523 2.86413 4.27185 26.59 1474.24 1020.653 9.45 9.45 8.523 2.86911 4.27927 26.64 1474.30 1020.694 9.75 9.75 8.523 2.87019 4.28091 26.66 1474.32 1020.704 10.05 10.05 8.523 2.87241 4.28429 26.68 1474.35 1020.723 10.35 10.35 8.523 2.87429 4.28702 26.70 1474.38 1020.739 10.65 10.65 8.523 2.87782 4.29233 26.73 1474.43 1020.769 10.95 10.95 8.523 2.87633 4.29008 26.72 1474.42 1020.758 11.25 11.25 8.522 2.87767 4.29215 26.73 1474.44 1020.771 11.55 11.55 8.523 2.87770 4.29219 26.73 1474.44 1020.772 11.85 11.85 8.523 2.87887 4.29389 26.74 1474.46 1020.783 12.15 12.15 8.523 2.88091 4.29694 26.76 1474.49 1020.800 12.45 12.45 8.523 2.88192 4.29841 26.77 1474.51 1020.810 12.75 12.75 8.524 2.88229 4.29888 26.78 1474.52 1020.813 13.05 13.05 8.524 2.88327 4.30036 26.79 1474.54 1020.823 13.35 13.35 8.524 2.88526 4.30334 26.81 1474.57 1020.840 13.65 13.65 8.524 2.88537 4.30345 26.81 1474.58 1020.842 13.95 13.95 8.524 2.88636 4.30492 26.82 1474.59 1020.851 14.25 14.25 8.523 2.88781 4.30715 26.83 1474.61 1020.864 14.55 14.55 8.523 2.88988 4.31029 26.85 1474.64 1020.882 14.85 14.85 8.522 2.88981 4.31029 26.85 1474.65 1020.884 15.15 15.14 8.521 2.88979 4.31042 26.86 1474.65 1020.886 15.45 15.44 8.521 2.88927 4.30959 26.85 1474.65 1020.883 15.75 15.74 8.522 2.89048 4.31138 26.86 1474.67 1020.893 16.05 16.04 8.522 2.88953 4.30989 26.85 1474.66 1020.887 16.35 16.34 8.522 2.88823 4.30802 26.84 1474.65 1020.878 16.65 16.64 8.521 2.89120 4.31258 26.87 1474.69 1020.904 16.95 16.94 8.520 2.89268 4.31486 26.88 1474.71 1020.917 17.25 17.24 8.520 2.89250 4.31463 26.88 1474.71 1020.918 17.55 17.54 8.521 2.89104 4.31222 26.87 1474.70 1020.906 17.85 17.84 8.520 2.89048 4.31154 26.86 1474.70 1020.904 18.15 18.14 8.519 2.88886 4.30929 26.85 1474.68 1020.893 18.45 18.44 8.520 2.89080 4.31206 26.87 1474.71 1020.909 18.75 18.74 8.518 2.89134 4.31311 26.87 1474.71 1020.916 19.05 19.04 8.514 2.89308 4.31620 26.89 1474.73 1020.934 19.35 19.34 8.515 2.89368 4.31696 26.90 1474.75 1020.939 19.65 19.64 8.514 2.89348 4.31687 26.90 1474.74 1020.940 19.95 19.94 8.514 2.89599 4.32061 26.92 1474.78 1020.962 20.13 20.11 8.514 2.89665 4.32155 26.93 1474.79 1020.967