*2026/01/16 10:37:47.80 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/02/19 17:49:14.000 END TIME : UTC 2025/02/19 17:49:22.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 42 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 12.36 2 Depth metres 0.15 12.3 3 Temperature 'deg C (ITS90)' 8.824 8.925 4 Conductivity S/m 3.27777 3.30984 5 Conductance:Specific S/m 4.84265 4.8811 6 Salinity PSS-78 30.59 30.86 7 Speed:Sound m/s 1480.18 1481.03 8 Density kg/m^3 1023.697 1023.955 $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 : 50 LATITUDE : 49 35.66540 N ! (deg min) LONGITUDE : 126 36.91130 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250219_174914 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:25 42 42 MERGEHDR 1.3 2026/01/16 10:35:39 42 42 HDREDIT2 3.2 2026/01/16 10:36:09 ? ? REMOVECH 8.2 2026/01/16 10:36:37 42 42 CALIB 12.1 2026/01/16 10:37:11 42 42 CLEAN 5.3 2026/01/16 10:37:47 42 42 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:09 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 10:36:37 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:11 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 8.824 3.27942 4.84776 30.63 1480.18 1023.723 0.45 0.45 8.841 3.27857 4.84410 30.60 1480.22 1023.704 0.75 0.75 8.843 3.27777 4.84265 30.59 1480.22 1023.697 1.05 1.05 8.832 3.28083 4.84871 30.63 1480.23 1023.732 1.35 1.34 8.833 3.28117 4.84905 30.64 1480.24 1023.735 1.65 1.64 8.837 3.28203 4.84981 30.64 1480.27 1023.740 1.95 1.94 8.845 3.28306 4.85020 30.65 1480.31 1023.743 2.25 2.24 8.846 3.28401 4.85142 30.65 1480.33 1023.751 2.55 2.54 8.846 3.28448 4.85212 30.66 1480.34 1023.756 2.85 2.84 8.845 3.28429 4.85191 30.66 1480.34 1023.757 3.15 3.14 8.842 3.28430 4.85242 30.66 1480.34 1023.761 3.45 3.44 8.840 3.28568 4.85469 30.68 1480.35 1023.775 3.75 3.73 8.840 3.28722 4.85706 30.69 1480.38 1023.789 4.05 4.03 8.840 3.28683 4.85649 30.69 1480.38 1023.787 4.35 4.33 8.839 3.28721 4.85713 30.69 1480.38 1023.792 4.65 4.63 8.837 3.28681 4.85683 30.69 1480.38 1023.791 4.95 4.93 8.837 3.28604 4.85571 30.68 1480.37 1023.787 5.25 5.23 8.839 3.28668 4.85632 30.69 1480.39 1023.791 5.55 5.53 8.841 3.28700 4.85647 30.69 1480.41 1023.793 5.85 5.82 8.842 3.28772 4.85741 30.69 1480.42 1023.800 6.15 6.12 8.842 3.28789 4.85766 30.70 1480.43 1023.802 6.45 6.42 8.842 3.28872 4.85891 30.70 1480.44 1023.810 6.75 6.72 8.841 3.28877 4.85916 30.71 1480.45 1023.813 7.05 7.02 8.840 3.28840 4.85876 30.70 1480.44 1023.812 7.35 7.32 8.841 3.28790 4.85789 30.70 1480.44 1023.809 7.65 7.62 8.841 3.28847 4.85870 30.70 1480.46 1023.814 7.95 7.92 8.844 3.29118 4.86234 30.73 1480.50 1023.835 8.25 8.21 8.853 3.29552 4.86737 30.76 1480.59 1023.864 8.55 8.51 8.858 3.29665 4.86842 30.77 1480.62 1023.871 8.85 8.81 8.856 3.29808 4.87076 30.79 1480.64 1023.885 9.15 9.11 8.858 3.29929 4.87221 30.80 1480.66 1023.894 9.45 9.41 8.860 3.30093 4.87431 30.81 1480.70 1023.907 9.75 9.71 8.863 3.30221 4.87581 30.82 1480.72 1023.916 10.05 10.01 8.871 3.30376 4.87700 30.83 1480.77 1023.923 10.35 10.30 8.870 3.30395 4.87735 30.84 1480.77 1023.927 10.65 10.60 8.870 3.30445 4.87813 30.84 1480.79 1023.932 10.95 10.90 8.875 3.30465 4.87764 30.84 1480.81 1023.931 11.25 11.20 8.871 3.30479 4.87846 30.84 1480.80 1023.937 11.55 11.50 8.867 3.30455 4.87872 30.84 1480.79 1023.939 11.85 11.80 8.866 3.30572 4.88056 30.86 1480.81 1023.951 12.15 12.10 8.870 3.30646 4.88110 30.86 1480.83 1023.955 12.36 12.30 8.925 3.30984 4.87812 30.85 1481.03 1023.937