*2026/01/16 09:47:01.62 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/08/29 18:19:28.000 END TIME : UTC 2023/08/29 18:19:35.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 39 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 11.64 2 Depth metres 0.15 11.59 3 Temperature 'deg C (ITS90)' 13.669 14.8 4 Conductivity S/m 3.83243 3.91439 5 Conductance:Specific S/m 4.91124 4.98625 6 Salinity PSS-78 31.68 32.16 7 Speed:Sound m/s 1498.94 1502.24 8 Density kg/m^3 1023.479 1024.074 $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 : 2023-031 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 6 LATITUDE : 49 22.68540 N ! (deg min) LONGITUDE : 126 10.95430 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230829_181928 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 39 39 MERGEHDR 1.3 2026/01/15 13:41:46 39 39 HDREDIT2 3.2 2026/01/15 14:00:53 ? ? REMOVECH 8.2 2026/01/15 14:01:17 39 39 CALIB 12.1 2026/01/16 09:45:59 39 39 CLEAN 5.3 2026/01/16 09:47:01 39 39 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:53 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 2026/01/15 14:01:17 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:45:59 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 09:47:01 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 14.797 3.91439 4.91795 31.75 1502.24 1023.510 0.45 0.45 14.800 3.91001 4.91206 31.71 1502.21 1023.479 0.75 0.75 14.691 3.90996 4.92553 31.79 1501.97 1023.571 1.05 1.05 14.613 3.90885 4.93383 31.85 1501.78 1023.630 1.35 1.34 14.586 3.90414 4.93124 31.83 1501.68 1023.621 1.65 1.64 14.569 3.90176 4.93026 31.82 1501.62 1023.620 1.95 1.94 14.570 3.89696 4.92413 31.77 1501.57 1023.587 2.25 2.24 14.493 3.87924 4.91124 31.68 1501.22 1023.528 2.55 2.54 14.339 3.87191 4.92115 31.73 1500.79 1023.607 2.85 2.84 14.237 3.86704 4.92774 31.77 1500.51 1023.660 3.15 3.14 14.172 3.86254 4.93026 31.79 1500.32 1023.685 3.45 3.44 14.099 3.86001 4.93614 31.82 1500.13 1023.729 3.75 3.73 14.058 3.85828 4.93919 31.84 1500.02 1023.753 4.05 4.03 14.006 3.85641 4.94332 31.87 1499.88 1023.785 4.35 4.33 13.968 3.85570 4.94724 31.89 1499.79 1023.813 4.65 4.63 13.943 3.85234 4.94615 31.88 1499.70 1023.812 4.95 4.93 13.902 3.85036 4.94885 31.90 1499.59 1023.834 5.25 5.23 13.870 3.84566 4.94678 31.88 1499.47 1023.828 5.55 5.53 13.833 3.84464 4.95022 31.90 1499.38 1023.853 5.85 5.83 13.805 3.83887 4.94632 31.87 1499.26 1023.837 6.15 6.12 13.758 3.83619 4.94888 31.89 1499.13 1023.859 6.45 6.42 13.731 3.83421 4.94979 31.89 1499.05 1023.869 6.75 6.72 13.718 3.83444 4.95174 31.90 1499.02 1023.883 7.05 7.02 13.706 3.83434 4.95310 31.91 1499.00 1023.893 7.35 7.32 13.695 3.83429 4.95447 31.92 1498.98 1023.903 7.65 7.62 13.692 3.83406 4.95458 31.92 1498.97 1023.906 7.95 7.92 13.689 3.83295 4.95359 31.91 1498.96 1023.902 8.25 8.21 13.682 3.83243 4.95374 31.91 1498.94 1023.905 8.55 8.51 13.674 3.83314 4.95572 31.93 1498.94 1023.918 8.85 8.81 13.669 3.83378 4.95713 31.94 1498.94 1023.928 9.15 9.11 13.669 3.83390 4.95732 31.94 1498.94 1023.930 9.45 9.41 13.671 3.83482 4.95828 31.94 1498.96 1023.937 9.75 9.71 13.674 3.83598 4.95940 31.95 1498.99 1023.944 10.05 10.01 13.677 3.83624 4.95929 31.95 1499.00 1023.944 10.35 10.31 13.689 3.83844 4.96060 31.96 1499.06 1023.951 10.65 10.60 13.768 3.85396 4.97057 32.04 1499.41 1023.996 10.95 10.90 13.847 3.87406 4.98625 32.16 1499.82 1024.074 11.25 11.20 13.816 3.85307 4.96327 31.99 1499.53 1023.952 11.64 11.59 13.868 3.87044 4.97892 32.11 1499.84 1024.033