*2026/01/16 09:47:02.45 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/09/29 19:14:11.000 END TIME : UTC 2023/09/29 19:14:18.600 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 11.68 2 Depth metres 0.15 11.65 3 Temperature 'deg C (ITS90)' 13.272 13.685 4 Conductivity S/m 3.08911 3.64412 5 Conductance:Specific S/m 3.99269 4.75355 6 Salinity PSS-78 25.13 30.45 7 Speed:Sound m/s 1490.86 1496.19 8 Density kg/m^3 1018.636 1022.858 $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 : 36 LATITUDE : 49 22.04610 N ! (deg min) LONGITUDE : 126 4.76220 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230929_191411 ! 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 13:41:47 39 39 HDREDIT2 3.2 2026/01/15 14:00:54 ? ? REMOVECH 8.2 2026/01/15 14:01:17 39 39 CALIB 12.1 2026/01/16 09:46:02 39 39 CLEAN 5.3 2026/01/16 09:47:02 39 39 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:54 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 09:46:02 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 13.685 3.08911 3.99269 25.13 1490.86 1018.636 0.45 0.45 13.654 3.14375 4.06653 25.64 1491.36 1019.038 0.75 0.75 13.609 3.18030 4.11861 26.00 1491.63 1019.325 1.05 1.05 13.599 3.20891 4.15669 26.27 1491.92 1019.532 1.35 1.35 13.592 3.22162 4.17396 26.39 1492.04 1019.628 1.65 1.65 13.562 3.22920 4.18699 26.48 1492.05 1019.703 1.95 1.95 13.520 3.24076 4.20656 26.61 1492.07 1019.816 2.25 2.25 13.462 3.34177 4.34421 27.57 1493.01 1020.569 2.55 2.55 13.377 3.41251 4.44599 28.28 1493.56 1021.134 2.85 2.85 13.326 3.47475 4.53315 28.89 1494.11 1021.617 3.15 3.15 13.326 3.49835 4.56390 29.11 1494.38 1021.786 3.45 3.45 13.387 3.51409 4.57714 29.21 1494.70 1021.852 3.75 3.75 13.429 3.53639 4.60117 29.38 1495.05 1021.979 4.05 4.05 13.464 3.55721 4.62406 29.55 1495.37 1022.101 4.35 4.34 13.477 3.58512 4.65877 29.79 1495.70 1022.291 4.65 4.64 13.464 3.59718 4.67602 29.91 1495.81 1022.388 4.95 4.94 13.435 3.61490 4.70256 30.10 1495.94 1022.539 5.25 5.24 13.420 3.62559 4.71832 30.21 1496.02 1022.629 5.55 5.54 13.418 3.62739 4.72092 30.23 1496.04 1022.645 5.85 5.84 13.423 3.62843 4.72170 30.24 1496.07 1022.650 6.15 6.14 13.420 3.63051 4.72476 30.26 1496.09 1022.668 6.45 6.44 13.421 3.63094 4.72522 30.26 1496.10 1022.672 6.75 6.74 13.422 3.63161 4.72599 30.27 1496.12 1022.677 7.05 7.04 13.419 3.63274 4.72779 30.28 1496.13 1022.689 7.35 7.34 13.415 3.63646 4.73310 30.31 1496.16 1022.719 7.65 7.63 13.404 3.63965 4.73859 30.35 1496.18 1022.752 7.95 7.93 13.388 3.64368 4.74581 30.40 1496.19 1022.795 8.25 8.23 13.375 3.64412 4.74802 30.42 1496.16 1022.811 8.55 8.53 13.359 3.64379 4.74958 30.43 1496.13 1022.823 8.85 8.83 13.359 3.64374 4.74957 30.43 1496.13 1022.824 9.15 9.13 13.359 3.64312 4.74868 30.42 1496.13 1022.820 9.45 9.43 13.345 3.64373 4.75120 30.44 1496.11 1022.837 9.75 9.73 13.319 3.64304 4.75355 30.45 1496.04 1022.855 10.05 10.03 13.315 3.63857 4.74820 30.41 1495.99 1022.827 10.35 10.33 13.324 3.64074 4.75000 30.43 1496.04 1022.837 10.65 10.62 13.321 3.64324 4.75355 30.45 1496.06 1022.858 10.95 10.92 13.334 3.64368 4.75260 30.45 1496.10 1022.853 11.25 11.22 13.288 3.63814 4.75107 30.43 1495.94 1022.851 11.68 11.65 13.272 3.63600 4.75020 30.42 1495.88 1022.850