*2026/01/16 09:47:02.23 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/09/28 22:01:56.000 END TIME : UTC 2023/09/28 22:02:03.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 36 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 10.55 2 Depth metres 0.15 10.55 3 Temperature 'deg C (ITS90)' 14.33 15.356 4 Conductivity S/m 2.66463 3.66976 5 Conductance:Specific S/m 3.30141 4.66505 6 Salinity PSS-78 20.46 29.9 7 Speed:Sound m/s 1490.93 1498.79 8 Density kg/m^3 1014.727 1022.23 $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 : 28 LATITUDE : 49 16.72940 N ! (deg min) LONGITUDE : 125 52.72510 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230928_220156 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 36 36 MERGEHDR 1.3 2026/01/15 13:41:47 36 36 HDREDIT2 3.2 2026/01/15 14:00:54 ? ? REMOVECH 8.2 2026/01/15 14:01:17 36 36 CALIB 12.1 2026/01/16 09:46:01 36 36 CLEAN 5.3 2026/01/16 09:47:02 36 36 $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 09:46:01 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 15.356 2.66463 3.30141 20.46 1490.98 1014.727 0.45 0.45 15.089 2.73173 3.40705 21.17 1490.93 1015.324 0.75 0.75 14.845 2.89218 3.62928 22.68 1491.88 1016.533 1.05 1.06 14.650 3.25127 4.09999 25.94 1495.02 1019.073 1.35 1.36 14.595 3.34945 4.22968 26.84 1495.90 1019.782 1.65 1.66 14.551 3.46398 4.37910 27.89 1496.98 1020.599 1.95 1.96 14.491 3.51471 4.45003 28.39 1497.37 1020.995 2.25 2.26 14.456 3.55342 4.50307 28.76 1497.69 1021.291 2.55 2.56 14.444 3.57683 4.53407 28.98 1497.91 1021.463 2.85 2.86 14.432 3.58862 4.55041 29.10 1498.01 1021.555 3.15 3.16 14.410 3.58867 4.55298 29.11 1497.97 1021.574 3.45 3.46 14.409 3.61999 4.59285 29.39 1498.30 1021.794 3.75 3.75 14.396 3.63680 4.61566 29.56 1498.45 1021.922 4.05 4.05 14.388 3.64263 4.62402 29.61 1498.50 1021.970 4.35 4.35 14.392 3.64672 4.62871 29.65 1498.56 1021.996 4.65 4.65 14.395 3.65597 4.64009 29.73 1498.67 1022.059 4.95 4.95 14.394 3.66193 4.64784 29.78 1498.73 1022.103 5.25 5.25 14.388 3.66321 4.65011 29.80 1498.73 1022.118 5.55 5.55 14.387 3.66405 4.65133 29.81 1498.74 1022.126 5.85 5.85 14.391 3.66440 4.65132 29.81 1498.76 1022.127 6.15 6.15 14.389 3.66492 4.65227 29.81 1498.77 1022.133 6.45 6.45 14.380 3.66500 4.65340 29.82 1498.75 1022.142 6.75 6.75 14.374 3.66533 4.65447 29.83 1498.75 1022.150 7.05 7.05 14.371 3.66546 4.65507 29.83 1498.74 1022.155 7.35 7.35 14.364 3.66429 4.65436 29.83 1498.72 1022.154 7.65 7.65 14.358 3.66424 4.65505 29.83 1498.71 1022.160 7.95 7.95 14.358 3.66526 4.65629 29.84 1498.73 1022.168 8.25 8.25 14.360 3.66525 4.65612 29.84 1498.74 1022.168 8.55 8.55 14.359 3.66635 4.65755 29.85 1498.75 1022.177 8.85 8.85 14.361 3.66813 4.65965 29.86 1498.78 1022.189 9.15 9.15 14.361 3.66889 4.66058 29.87 1498.79 1022.196 9.45 9.45 14.355 3.66932 4.66188 29.88 1498.79 1022.205 9.75 9.75 14.340 3.66673 4.66027 29.87 1498.73 1022.200 10.05 10.05 14.330 3.66800 4.66309 29.89 1498.72 1022.218 10.35 10.35 14.342 3.66965 4.66379 29.89 1498.77 1022.221 10.55 10.55 14.333 3.66976 4.66505 29.90 1498.76 1022.230