*2026/01/16 10:37:52.44 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/28 20:37:01.000 END TIME : UTC 2025/04/28 20:37:10.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 46 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 13.74 2 Depth metres 0.15 13.74 3 Temperature 'deg C (ITS90)' 11.012 11.053 4 Conductivity S/m 2.84436 2.98859 5 Conductance:Specific S/m 3.9479 4.14609 6 Salinity PSS-78 24.63 25.99 7 Speed:Sound m/s 1480.96 1482.92 8 Density kg/m^3 1018.711 1019.825 $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 : 111 LATITUDE : 49 7.27710 N ! (deg min) LONGITUDE : 125 48.30640 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250428_203701 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:28 46 46 MERGEHDR 1.3 2026/01/16 10:35:42 46 46 HDREDIT2 3.2 2026/01/16 10:36:13 ? ? REMOVECH 8.2 2026/01/16 10:36:40 46 46 CALIB 12.1 2026/01/16 10:37:15 46 46 CLEAN 5.3 2026/01/16 10:37:52 46 46 $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 11.012 2.84555 3.95081 24.65 1480.96 1018.727 0.45 0.45 11.024 2.84436 3.94790 24.63 1480.99 1018.711 0.75 0.75 11.028 2.84729 3.95150 24.65 1481.04 1018.731 1.05 1.05 11.020 2.85234 3.95936 24.70 1481.08 1018.775 1.35 1.35 11.021 2.86008 3.97002 24.78 1481.17 1018.833 1.65 1.65 11.027 2.86968 3.98268 24.87 1481.31 1018.902 1.95 1.95 11.030 2.88387 4.00203 25.00 1481.48 1019.006 2.25 2.25 11.035 2.88644 4.00506 25.02 1481.53 1019.023 2.55 2.55 11.029 2.88246 4.00020 24.99 1481.47 1018.999 2.85 2.85 11.028 2.88285 4.00082 24.99 1481.48 1019.004 3.15 3.15 11.029 2.88671 4.00610 25.03 1481.53 1019.033 3.45 3.45 11.027 2.88317 4.00135 24.99 1481.49 1019.009 3.75 3.75 11.027 2.88867 4.00899 25.05 1481.56 1019.051 4.05 4.05 11.028 2.89357 4.01567 25.09 1481.62 1019.088 4.35 4.35 11.030 2.90067 4.02540 25.16 1481.71 1019.141 4.65 4.65 11.031 2.91001 4.03823 25.25 1481.83 1019.211 4.95 4.95 11.032 2.91564 4.04589 25.30 1481.90 1019.253 5.25 5.25 11.031 2.91792 4.04914 25.32 1481.93 1019.272 5.55 5.55 11.032 2.91984 4.05178 25.34 1481.96 1019.287 5.85 5.85 11.033 2.92182 4.05442 25.36 1481.99 1019.303 6.15 6.15 11.034 2.92120 4.05340 25.35 1481.99 1019.298 6.45 6.45 11.032 2.92085 4.05308 25.35 1481.98 1019.298 6.75 6.75 11.032 2.92490 4.05880 25.39 1482.03 1019.330 7.05 7.05 11.030 2.92581 4.06021 25.40 1482.05 1019.339 7.35 7.35 11.031 2.92475 4.05863 25.39 1482.04 1019.332 7.65 7.65 11.035 2.92645 4.06058 25.40 1482.08 1019.343 7.95 7.95 11.034 2.92945 4.06479 25.43 1482.11 1019.367 8.25 8.25 11.030 2.93451 4.07234 25.48 1482.16 1019.409 8.55 8.55 11.031 2.93620 4.07458 25.50 1482.19 1019.422 8.85 8.85 11.031 2.94017 4.08008 25.53 1482.24 1019.453 9.15 9.15 11.031 2.93971 4.07939 25.53 1482.24 1019.451 9.45 9.45 11.032 2.94078 4.08085 25.54 1482.26 1019.460 9.75 9.75 11.032 2.95158 4.09581 25.64 1482.39 1019.541 10.05 10.05 11.034 2.95488 4.10012 25.67 1482.44 1019.565 10.35 10.35 11.034 2.95819 4.10468 25.70 1482.48 1019.591 10.65 10.65 11.033 2.95881 4.10569 25.71 1482.49 1019.598 10.95 10.95 11.034 2.96224 4.11037 25.74 1482.54 1019.624 11.25 11.25 11.035 2.96949 4.12033 25.81 1482.63 1019.679 11.55 11.55 11.037 2.97774 4.13154 25.89 1482.73 1019.740 11.85 11.85 11.035 2.97890 4.13335 25.90 1482.74 1019.751 12.15 12.15 11.038 2.97785 4.13157 25.89 1482.75 1019.742 12.45 12.45 11.039 2.97924 4.13335 25.90 1482.77 1019.753 12.75 12.75 11.038 2.98310 4.13879 25.94 1482.82 1019.784 13.05 13.05 11.041 2.98595 4.14248 25.96 1482.86 1019.805 13.35 13.35 11.041 2.98859 4.14609 25.99 1482.90 1019.825 13.74 13.74 11.053 2.98677 4.14215 25.96 1482.92 1019.805