*2026/01/16 09:47:01.99 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/08/30 19:11:34.000 END TIME : UTC 2023/08/30 19:11:41.600 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 11.67 2 Depth metres 0.15 11.63 3 Temperature 'deg C (ITS90)' 14.894 15.81 4 Conductivity S/m 3.80023 3.88463 5 Conductance:Specific S/m 4.72261 4.77936 6 Salinity PSS-78 30.38 30.77 7 Speed:Sound m/s 1501.45 1504.21 8 Density kg/m^3 1022.349 1022.754 $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 : 18 LATITUDE : 49 16.34750 N ! (deg min) LONGITUDE : 125 48.52050 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230830_191134 ! 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 09:46:00 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 09:46:00 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 15.810 3.88463 4.75938 30.68 1504.21 1022.468 0.45 0.45 15.706 3.86359 4.74571 30.57 1503.77 1022.412 0.75 0.75 15.404 3.84047 4.75263 30.60 1502.86 1022.502 1.05 1.05 15.272 3.82337 4.74697 30.55 1502.39 1022.494 1.35 1.35 15.279 3.81892 4.74058 30.51 1502.36 1022.459 1.65 1.64 15.268 3.81990 4.74305 30.52 1502.35 1022.476 1.95 1.94 15.323 3.82046 4.73729 30.49 1502.49 1022.436 2.25 2.24 15.369 3.81291 4.72261 30.38 1502.52 1022.349 2.55 2.54 15.260 3.80906 4.73056 30.43 1502.24 1022.412 2.85 2.84 15.199 3.81202 4.74138 30.51 1502.13 1022.483 3.15 3.14 15.131 3.81271 4.75038 30.57 1501.99 1022.545 3.45 3.44 15.150 3.80521 4.73869 30.49 1501.96 1022.478 3.75 3.74 15.105 3.80837 4.74794 30.55 1501.89 1022.538 4.05 4.04 15.064 3.80731 4.75154 30.57 1501.79 1022.566 4.35 4.34 15.072 3.80619 4.74923 30.55 1501.80 1022.553 4.65 4.64 15.077 3.80534 4.74751 30.54 1501.81 1022.544 4.95 4.93 15.047 3.80504 4.75075 30.56 1501.75 1022.568 5.25 5.23 15.045 3.80515 4.75116 30.57 1501.75 1022.572 5.55 5.53 15.017 3.80200 4.75050 30.56 1501.65 1022.574 5.85 5.83 14.982 3.80023 4.75245 30.57 1501.56 1022.591 6.15 6.13 14.965 3.80145 4.75598 30.60 1501.54 1022.615 6.45 6.43 14.955 3.80151 4.75727 30.60 1501.52 1022.625 6.75 6.73 14.944 3.80286 4.76029 30.62 1501.51 1022.644 7.05 7.03 14.910 3.80481 4.76679 30.67 1501.46 1022.687 7.35 7.33 14.905 3.80466 4.76709 30.67 1501.46 1022.690 7.65 7.63 14.902 3.80571 4.76888 30.68 1501.46 1022.702 7.95 7.93 14.912 3.80658 4.76877 30.68 1501.50 1022.701 8.25 8.22 14.922 3.80720 4.76834 30.68 1501.53 1022.698 8.55 8.52 14.912 3.80494 4.76662 30.67 1501.49 1022.692 8.85 8.82 14.903 3.80429 4.76689 30.67 1501.47 1022.696 9.15 9.12 14.894 3.80335 4.76681 30.67 1501.45 1022.698 9.45 9.42 14.896 3.80413 4.76755 30.67 1501.46 1022.703 9.75 9.72 14.903 3.80731 4.77073 30.70 1501.52 1022.721 10.05 10.02 14.950 3.81409 4.77355 30.72 1501.70 1022.730 10.35 10.32 14.981 3.81510 4.77117 30.70 1501.79 1022.713 10.65 10.62 14.954 3.81759 4.77753 30.75 1501.75 1022.754 10.95 10.92 14.951 3.81628 4.77614 30.74 1501.74 1022.748 11.25 11.21 15.002 3.81880 4.77323 30.72 1501.89 1022.725 11.67 11.63 15.091 3.83217 4.77936 30.77 1502.24 1022.746