*2026/01/16 09:47:03.89 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/11/22 22:39:10.000 END TIME : UTC 2023/11/22 22:39:17.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 40 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 11.92 2 Depth metres 0.15 11.9 3 Temperature 'deg C (ITS90)' 9.609 12.23 4 Conductivity S/m 2.43683 3.55121 5 Conductance:Specific S/m 3.52056 4.77634 6 Salinity PSS-78 21.6 30.51 7 Speed:Sound m/s 1472.11 1492.37 8 Density kg/m^3 1016.57 1023.125 $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 : 78 LATITUDE : 49 42.02960 N ! (deg min) LONGITUDE : 126 37.94270 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231122_223910 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:52 40 40 MERGEHDR 1.3 2026/01/15 13:41:48 40 40 HDREDIT2 3.2 2026/01/15 14:00:56 ? ? REMOVECH 8.2 2026/01/15 14:01:18 40 40 CALIB 12.1 2026/01/16 09:46:08 40 40 CLEAN 5.3 2026/01/16 09:47:03 40 40 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:56 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 14:01:18 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:08 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 9.609 2.43683 3.52056 21.60 1472.11 1016.570 0.45 0.45 9.915 2.49556 3.57376 21.99 1473.74 1016.827 0.75 0.75 10.157 2.58305 3.67354 22.68 1475.48 1017.334 1.05 1.05 10.331 2.63517 3.72929 23.07 1476.60 1017.615 1.35 1.35 10.369 2.71533 3.83856 23.82 1477.65 1018.192 1.65 1.65 10.378 2.74627 3.88130 24.11 1478.04 1018.419 1.95 1.95 10.469 2.79799 3.94430 24.55 1478.91 1018.748 2.25 2.25 10.587 2.85574 4.01233 25.03 1479.92 1019.102 2.55 2.55 10.687 2.96890 4.15968 26.06 1481.52 1019.883 2.85 2.85 10.855 3.04631 4.24814 26.68 1482.89 1020.346 3.15 3.15 11.012 3.09610 4.29873 27.05 1483.90 1020.605 3.45 3.45 11.164 3.13009 4.32768 27.26 1484.70 1020.749 3.75 3.75 11.321 3.15675 4.34562 27.40 1485.43 1020.832 4.05 4.05 11.394 3.21277 4.41387 27.89 1486.28 1021.196 4.35 4.35 11.445 3.25683 4.46815 28.27 1486.92 1021.487 4.65 4.65 11.544 3.29660 4.51047 28.58 1487.64 1021.708 4.95 4.95 11.660 3.32274 4.53183 28.74 1488.25 1021.814 5.25 5.25 11.706 3.34981 4.56300 28.96 1488.68 1021.980 5.55 5.55 11.724 3.37269 4.59192 29.17 1488.99 1022.138 5.85 5.85 11.759 3.38962 4.61065 29.30 1489.28 1022.238 6.15 6.15 11.797 3.40481 4.62654 29.42 1489.55 1022.322 6.45 6.45 11.825 3.42125 4.64522 29.55 1489.82 1022.422 6.75 6.74 11.840 3.43036 4.65572 29.63 1489.97 1022.479 7.05 7.04 11.857 3.44255 4.67021 29.73 1490.15 1022.558 7.35 7.34 11.885 3.45563 4.68437 29.83 1490.38 1022.634 7.65 7.64 11.908 3.46401 4.69283 29.89 1490.54 1022.679 7.95 7.94 11.921 3.47151 4.70123 29.96 1490.66 1022.725 8.25 8.24 11.947 3.48008 4.70959 30.02 1490.83 1022.770 8.55 8.54 11.999 3.48834 4.71409 30.05 1491.06 1022.790 8.85 8.84 12.026 3.49919 4.72537 30.14 1491.25 1022.850 9.15 9.14 12.039 3.50701 4.73425 30.20 1491.38 1022.899 9.45 9.44 12.066 3.51459 4.74094 30.25 1491.54 1022.934 9.75 9.73 12.110 3.52221 4.74564 30.29 1491.74 1022.956 10.05 10.03 12.151 3.52878 4.74923 30.32 1491.92 1022.973 10.35 10.33 12.171 3.53591 4.75626 30.37 1492.06 1023.010 10.65 10.63 12.185 3.54055 4.76074 30.40 1492.15 1023.035 10.95 10.93 12.196 3.54333 4.76308 30.42 1492.21 1023.047 11.25 11.23 12.206 3.54467 4.76357 30.42 1492.26 1023.050 11.55 11.53 12.175 3.55121 4.77634 30.51 1492.26 1023.125 11.92 11.90 12.230 3.54869 4.76592 30.44 1492.37 1023.063