*2026/01/16 10:37:49.21 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/03/10 20:47:07.000 END TIME : UTC 2025/03/10 20:47:20.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 68 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.19 2 Depth metres 0.15 20.2 3 Temperature 'deg C (ITS90)' 7.801 8.559 4 Conductivity S/m 1.32002 2.90732 5 Conductance:Specific S/m 2.01218 4.33189 6 Salinity PSS-78 11.66 27.01 7 Speed:Sound m/s 1452.88 1475.04 8 Density kg/m^3 1009.021 1021.018 $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 : 2025-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 68 LATITUDE : 49 7.09630 N ! (deg min) LONGITUDE : 125 48.04870 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250310_204707 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:26 68 68 MERGEHDR 1.3 2026/01/16 10:35:40 68 68 HDREDIT2 3.2 2026/01/16 10:36:11 ? ? REMOVECH 8.2 2026/01/16 10:36:38 68 68 CALIB 12.1 2026/01/16 10:37:12 68 68 CLEAN 5.3 2026/01/16 10:37:49 68 68 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:11 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 10:36:38 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:12 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 10:37:42 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 7.801 1.32002 2.01218 11.66 1452.88 1009.021 0.45 0.45 7.883 1.47678 2.24553 13.14 1455.03 1010.170 0.75 0.76 7.968 1.60122 2.42845 14.31 1456.83 1011.078 1.05 1.06 8.043 1.66741 2.52312 14.92 1457.88 1011.550 1.35 1.36 8.094 1.72950 2.61302 15.50 1458.81 1012.002 1.65 1.66 8.130 1.81488 2.73901 16.32 1459.96 1012.638 1.95 1.97 8.174 2.07560 3.12832 18.87 1463.28 1014.626 2.25 2.27 8.177 2.22809 3.35792 20.39 1465.16 1015.814 2.55 2.57 8.201 2.28915 3.44739 20.98 1465.99 1016.279 2.85 2.87 8.244 2.38789 3.59149 21.95 1467.35 1017.031 3.15 3.17 8.272 2.50908 3.77054 23.16 1468.95 1017.972 3.45 3.47 8.305 2.59619 3.89764 24.02 1470.14 1018.643 3.75 3.77 8.343 2.62244 3.93256 24.26 1470.59 1018.828 4.05 4.07 8.368 2.63755 3.95222 24.40 1470.86 1018.932 4.35 4.37 8.388 2.66551 3.99168 24.67 1471.27 1019.142 4.65 4.67 8.402 2.68887 4.02498 24.89 1471.61 1019.320 4.95 4.97 8.407 2.71191 4.05887 25.13 1471.92 1019.501 5.25 5.27 8.412 2.72004 4.07048 25.20 1472.04 1019.564 5.55 5.57 8.421 2.72261 4.07323 25.22 1472.10 1019.580 5.85 5.87 8.427 2.72337 4.07357 25.23 1472.14 1019.583 6.15 6.17 8.431 2.72464 4.07504 25.24 1472.17 1019.592 6.45 6.47 8.434 2.72526 4.07560 25.24 1472.19 1019.596 6.75 6.77 8.437 2.72568 4.07591 25.24 1472.21 1019.599 7.05 7.07 8.443 2.73415 4.08782 25.33 1472.34 1019.663 7.35 7.37 8.450 2.74387 4.10145 25.42 1472.48 1019.737 7.65 7.67 8.459 2.75270 4.11358 25.50 1472.63 1019.802 7.95 7.97 8.464 2.75905 4.12237 25.56 1472.73 1019.850 8.25 8.27 8.468 2.76002 4.12342 25.57 1472.75 1019.857 8.55 8.57 8.471 2.75847 4.12071 25.55 1472.75 1019.844 8.85 8.87 8.477 2.76550 4.13047 25.62 1472.86 1019.897 9.15 9.17 8.480 2.77369 4.14227 25.70 1472.98 1019.961 9.45 9.47 8.485 2.77553 4.14444 25.72 1473.02 1019.974 9.75 9.77 8.494 2.78732 4.16097 25.83 1473.19 1020.063 10.05 10.07 8.503 2.79978 4.17842 25.95 1473.38 1020.157 10.35 10.37 8.514 2.81083 4.19351 26.05 1473.56 1020.239 10.65 10.67 8.527 2.81271 4.19467 26.06 1473.63 1020.246 10.95 10.97 8.529 2.82087 4.20658 26.15 1473.74 1020.311 11.25 11.27 8.532 2.83000 4.21985 26.24 1473.87 1020.383 11.55 11.57 8.535 2.84074 4.23550 26.34 1474.01 1020.468 11.85 11.87 8.538 2.85132 4.25090 26.45 1474.16 1020.552 12.15 12.17 8.540 2.85304 4.25316 26.47 1474.19 1020.565 12.45 12.47 8.542 2.85549 4.25663 26.49 1474.23 1020.585 12.75 12.77 8.542 2.85849 4.26100 26.52 1474.28 1020.609 13.05 13.06 8.543 2.86006 4.26323 26.53 1474.30 1020.623 13.35 13.36 8.542 2.86237 4.26687 26.56 1474.33 1020.643 13.65 13.66 8.542 2.86421 4.26956 26.58 1474.36 1020.659 13.95 13.96 8.543 2.86950 4.27729 26.63 1474.44 1020.702 14.25 14.26 8.544 2.87563 4.28639 26.69 1474.52 1020.752 14.55 14.56 8.546 2.88242 4.29625 26.76 1474.62 1020.806 14.85 14.86 8.547 2.88479 4.29957 26.78 1474.66 1020.825 15.15 15.16 8.549 2.88512 4.29991 26.79 1474.67 1020.828 15.45 15.46 8.551 2.88891 4.30528 26.82 1474.73 1020.858 15.75 15.76 8.551 2.89277 4.31097 26.86 1474.78 1020.890 16.05 16.06 8.553 2.89546 4.31480 26.89 1474.82 1020.912 16.35 16.36 8.554 2.89629 4.31592 26.90 1474.84 1020.919 16.65 16.66 8.555 2.89698 4.31671 26.90 1474.86 1020.925 16.95 16.96 8.557 2.89710 4.31668 26.90 1474.87 1020.926 17.25 17.26 8.557 2.89787 4.31778 26.91 1474.89 1020.933 17.55 17.56 8.558 2.90046 4.32155 26.94 1474.93 1020.954 17.85 17.86 8.558 2.90107 4.32250 26.94 1474.94 1020.961 18.15 18.16 8.559 2.90169 4.32324 26.95 1474.95 1020.966 18.45 18.46 8.557 2.90206 4.32402 26.95 1474.96 1020.972 18.75 18.76 8.557 2.90523 4.32879 26.98 1475.00 1020.999 19.05 19.06 8.558 2.90576 4.32948 26.99 1475.02 1021.003 19.35 19.36 8.557 2.90732 4.33189 27.01 1475.04 1021.018 19.65 19.66 8.556 2.90618 4.33033 26.99 1475.03 1021.011 19.95 19.95 8.555 2.90626 4.33061 27.00 1475.03 1021.014 20.19 20.20 8.555 2.90451 4.32797 26.98 1475.01 1021.000