*2026/01/16 09:47:01.93 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/08/30 17:14:04.000 END TIME : UTC 2023/08/30 17:14:11.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 38 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 11.2 2 Depth metres 0.15 11.16 3 Temperature 'deg C (ITS90)' 15.024 15.644 4 Conductivity S/m 3.82616 3.86383 5 Conductance:Specific S/m 4.73732 4.78067 6 Salinity PSS-78 30.51 30.77 7 Speed:Sound m/s 1502.02 1503.62 8 Density kg/m^3 1022.38 1022.762 $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 : 15 LATITUDE : 49 16.57770 N ! (deg min) LONGITUDE : 125 53.19180 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230830_171404 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 38 38 MERGEHDR 1.3 2026/01/15 13:41:46 38 38 HDREDIT2 3.2 2026/01/15 14:00:53 ? ? REMOVECH 8.2 2026/01/15 14:01:17 38 38 CALIB 12.1 2026/01/16 09:46:00 38 38 CLEAN 5.3 2026/01/16 09:47:01 38 38 $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 09:46:00 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 15.615 3.84816 4.73732 30.51 1503.40 1022.380 0.45 0.45 15.644 3.85346 4.74046 30.53 1503.53 1022.394 0.75 0.75 15.640 3.86314 4.75283 30.62 1503.62 1022.464 1.05 1.05 15.601 3.86383 4.75828 30.66 1503.55 1022.502 1.35 1.35 15.550 3.86140 4.76126 30.67 1503.41 1022.528 1.65 1.65 15.515 3.85849 4.76182 30.68 1503.31 1022.538 1.95 1.94 15.485 3.85339 4.75901 30.65 1503.19 1022.529 2.25 2.24 15.449 3.84936 4.75830 30.65 1503.07 1022.532 2.55 2.54 15.421 3.84864 4.76066 30.66 1503.01 1022.551 2.85 2.84 15.403 3.84808 4.76215 30.67 1502.97 1022.564 3.15 3.14 15.381 3.84766 4.76422 30.68 1502.92 1022.580 3.45 3.44 15.360 3.84690 4.76570 30.69 1502.87 1022.593 3.75 3.74 15.351 3.84614 4.76580 30.69 1502.84 1022.596 4.05 4.04 15.338 3.84539 4.76648 30.70 1502.81 1022.603 4.35 4.34 15.330 3.84499 4.76688 30.70 1502.79 1022.608 4.65 4.64 15.319 3.84458 4.76768 30.70 1502.77 1022.616 4.95 4.93 15.303 3.84399 4.76889 30.71 1502.73 1022.626 5.25 5.23 15.292 3.84320 4.76923 30.71 1502.70 1022.631 5.55 5.53 15.278 3.84218 4.76954 30.71 1502.67 1022.636 5.85 5.83 15.265 3.84170 4.77055 30.72 1502.64 1022.645 6.15 6.13 15.251 3.84067 4.77085 30.72 1502.60 1022.650 6.45 6.43 15.235 3.84032 4.77240 30.73 1502.56 1022.663 6.75 6.73 15.213 3.83916 4.77354 30.74 1502.51 1022.674 7.05 7.03 15.196 3.83695 4.77285 30.73 1502.45 1022.674 7.35 7.33 15.186 3.83625 4.77310 30.73 1502.43 1022.678 7.65 7.63 15.174 3.83577 4.77396 30.74 1502.40 1022.686 7.95 7.92 15.157 3.83436 4.77424 30.74 1502.35 1022.692 8.25 8.22 15.143 3.83356 4.77489 30.74 1502.31 1022.699 8.55 8.52 15.136 3.83249 4.77434 30.74 1502.29 1022.698 8.85 8.82 15.128 3.83209 4.77486 30.74 1502.27 1022.704 9.15 9.12 15.119 3.83206 4.77592 30.75 1502.26 1022.712 9.45 9.42 15.116 3.83184 4.77594 30.75 1502.25 1022.714 9.75 9.72 15.113 3.83203 4.77651 30.75 1502.25 1022.719 10.05 10.02 15.104 3.83202 4.77764 30.76 1502.24 1022.728 10.35 10.32 15.099 3.83254 4.77881 30.77 1502.24 1022.737 10.65 10.62 15.112 3.83251 4.77730 30.76 1502.27 1022.727 10.95 10.92 15.046 3.82616 4.77720 30.75 1502.06 1022.739 11.20 11.16 15.024 3.82679 4.78067 30.77 1502.02 1022.762