*2026/01/16 09:47:02.76 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/11/08 18:56:50.000 END TIME : UTC 2023/11/08 18:56:55.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 29 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 8.55 2 Depth metres 0.15 8.53 3 Temperature 'deg C (ITS90)' 11.321 12.641 4 Conductivity S/m 2.68123 3.57048 5 Conductance:Specific S/m 3.69102 4.75017 6 Salinity PSS-78 22.89 30.36 7 Speed:Sound m/s 1479.98 1493.5 8 Density kg/m^3 1017.318 1022.924 $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 : 50 LATITUDE : 48 54.56070 N ! (deg min) LONGITUDE : 125 20.43740 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231108_185650 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:52 29 29 MERGEHDR 1.3 2026/01/15 13:41:47 29 29 HDREDIT2 3.2 2026/01/15 14:00:55 ? ? REMOVECH 8.2 2026/01/15 14:01:17 29 29 CALIB 12.1 2026/01/16 09:46:03 29 29 CLEAN 5.3 2026/01/16 09:47:02 29 29 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:55 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 09:46:03 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 11.321 2.68123 3.69102 22.89 1479.98 1017.318 0.45 0.45 11.341 2.69889 3.71329 23.05 1480.24 1017.435 0.75 0.75 11.384 2.75518 3.78628 23.55 1481.00 1017.818 1.05 1.05 11.426 2.81673 3.86640 24.10 1481.81 1018.241 1.35 1.35 11.400 2.83267 3.89108 24.27 1481.92 1018.376 1.65 1.65 11.396 2.85926 3.92802 24.52 1482.22 1018.574 1.95 1.95 11.478 2.88358 3.95246 24.69 1482.73 1018.697 2.25 2.25 11.577 2.92846 4.00313 25.05 1483.51 1018.959 2.55 2.55 11.805 3.01834 4.10044 25.74 1485.14 1019.457 2.85 2.85 12.079 3.24237 4.37228 27.66 1488.39 1020.894 3.15 3.15 12.263 3.41626 4.58403 29.16 1490.82 1022.026 3.45 3.45 12.458 3.44820 4.60275 29.31 1491.67 1022.108 3.75 3.75 12.545 3.46340 4.61229 29.39 1492.06 1022.151 4.05 4.05 12.578 3.47449 4.62299 29.46 1492.28 1022.207 4.35 4.35 12.589 3.48129 4.63078 29.52 1492.38 1022.249 4.65 4.65 12.595 3.49148 4.64349 29.61 1492.52 1022.319 4.95 4.95 12.613 3.50779 4.66296 29.75 1492.75 1022.425 5.25 5.25 12.625 3.51491 4.67104 29.81 1492.86 1022.469 5.55 5.55 12.631 3.51777 4.67407 29.83 1492.91 1022.487 5.85 5.84 12.634 3.51934 4.67579 29.84 1492.94 1022.497 6.15 6.14 12.640 3.52677 4.68485 29.91 1493.05 1022.547 6.45 6.44 12.641 3.53804 4.69974 30.01 1493.18 1022.630 6.75 6.74 12.641 3.54749 4.71230 30.10 1493.29 1022.700 7.05 7.04 12.637 3.55428 4.72178 30.17 1493.36 1022.754 7.35 7.34 12.610 3.55824 4.73043 30.23 1493.34 1022.806 7.65 7.64 12.606 3.56812 4.74403 30.32 1493.45 1022.882 7.95 7.94 12.614 3.57048 4.74623 30.34 1493.50 1022.895 8.25 8.24 12.585 3.56861 4.74738 30.34 1493.41 1022.906 8.55 8.53 12.571 3.56934 4.75017 30.36 1493.39 1022.924