*2026/01/16 09:57:52.78 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/07/09 23:12:01.000 END TIME : UTC 2024/07/09 23:12:10.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 46 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 13.77 2 Depth metres 0.15 13.71 3 Temperature 'deg C (ITS90)' 9.791 15.571 4 Conductivity S/m 3.54364 3.98804 5 Conductance:Specific S/m 4.73663 5.09326 6 Salinity PSS-78 30.5 32.48 7 Speed:Sound m/s 1486.24 1504.44 8 Density kg/m^3 1022.395 1025.084 $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 : 2024-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 170 LATITUDE : 49 45.14050 N ! (deg min) LONGITUDE : 126 57.50310 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240709_231201 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 09:00:02 46 46 MERGEHDR 1.3 2026/01/16 09:53:56 46 46 HDREDIT2 3.2 2026/01/16 09:55:07 ? ? REMOVECH 8.2 2026/01/16 09:56:19 46 46 CALIB 12.1 2026/01/16 09:56:52 46 46 CLEAN 5.3 2026/01/16 09:57:52 46 46 $END $REMARKS -HEADER EDITS: 2026/01/16 09:55:07 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 2026/01/16 09:56:19 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:56:52 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 09:57:46 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 15.435 3.98804 4.93140 31.89 1504.44 1023.483 0.45 0.45 15.545 3.94745 4.86794 31.44 1504.27 1023.114 0.75 0.75 15.563 3.91747 4.82882 31.16 1504.01 1022.896 1.05 1.05 15.571 3.87288 4.77293 30.76 1503.57 1022.588 1.35 1.35 15.537 3.84014 4.73663 30.50 1503.16 1022.395 1.65 1.64 15.456 3.83679 4.74191 30.53 1502.95 1022.438 1.95 1.94 15.297 3.83124 4.75372 30.60 1502.54 1022.531 2.25 2.24 15.074 3.83400 4.78362 30.80 1502.06 1022.733 2.55 2.54 14.730 3.84322 4.83667 31.16 1501.38 1023.081 2.85 2.84 14.388 3.84851 4.88539 31.48 1500.66 1023.404 3.15 3.14 13.943 3.84134 4.93203 31.78 1499.56 1023.727 3.45 3.44 13.411 3.76167 4.89667 31.48 1497.46 1023.605 3.75 3.74 12.974 3.73122 4.91290 31.56 1496.09 1023.752 4.05 4.04 12.689 3.72533 4.94224 31.74 1495.35 1023.950 4.35 4.33 12.475 3.71686 4.95916 31.84 1494.75 1024.070 4.65 4.63 12.306 3.71088 4.97355 31.93 1494.28 1024.169 4.95 4.93 12.076 3.69562 4.98381 31.98 1493.56 1024.252 5.25 5.23 11.907 3.68094 4.98677 31.98 1492.99 1024.288 5.55 5.53 11.782 3.66403 4.98067 31.93 1492.49 1024.268 5.85 5.83 11.649 3.65590 4.98778 31.96 1492.08 1024.322 6.15 6.13 11.544 3.65363 4.99894 32.03 1491.80 1024.395 6.45 6.42 11.472 3.65111 5.00538 32.07 1491.60 1024.439 6.75 6.72 11.349 3.64421 5.01279 32.11 1491.22 1024.492 7.05 7.02 11.188 3.63724 5.02550 32.18 1490.75 1024.578 7.35 7.32 11.023 3.62007 5.02466 32.15 1490.14 1024.589 7.65 7.62 10.891 3.59660 5.01048 32.04 1489.54 1024.523 7.95 7.92 10.767 3.59256 5.02212 32.10 1489.19 1024.599 8.25 8.21 10.654 3.59028 5.03488 32.18 1488.88 1024.680 8.55 8.51 10.590 3.58895 5.04214 32.23 1488.71 1024.726 8.85 8.81 10.538 3.58932 5.04991 32.27 1488.59 1024.774 9.15 9.11 10.494 3.58801 5.05443 32.30 1488.47 1024.804 9.45 9.41 10.449 3.58646 5.05865 32.32 1488.35 1024.832 9.75 9.71 10.391 3.58333 5.06242 32.34 1488.17 1024.858 10.05 10.00 10.340 3.58114 5.06674 32.37 1488.02 1024.887 10.35 10.30 10.291 3.57500 5.06502 32.35 1487.82 1024.882 10.65 10.60 10.262 3.57004 5.06221 32.33 1487.70 1024.870 10.95 10.90 10.219 3.56889 5.06670 32.35 1487.58 1024.899 11.25 11.20 10.161 3.56728 5.07275 32.39 1487.42 1024.937 11.55 11.50 10.127 3.56608 5.07600 32.41 1487.32 1024.959 11.85 11.80 10.033 3.56188 5.08357 32.45 1487.04 1025.008 12.15 12.09 10.011 3.55625 5.07870 32.41 1486.92 1024.984 12.45 12.39 10.058 3.55453 5.06956 32.35 1487.02 1024.931 12.75 12.69 10.013 3.54687 5.06500 32.31 1486.82 1024.910 13.05 12.99 9.925 3.54364 5.07320 32.36 1486.56 1024.962 13.35 13.29 9.845 3.54462 5.08622 32.44 1486.38 1025.040 13.77 13.71 9.791 3.54403 5.09326 32.48 1486.24 1025.084