*2026/01/16 10:37:53.11 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/29 20:34:07.000 END TIME : UTC 2025/04/29 20:34:20.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 66 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 19.77 2 Depth metres 0.15 19.75 3 Temperature 'deg C (ITS90)' 10.611 11.457 4 Conductivity S/m 3.03662 3.10818 5 Conductance:Specific S/m 4.16763 4.36362 6 Salinity PSS-78 26.18 27.46 7 Speed:Sound m/s 1482.69 1484.67 8 Density kg/m^3 1019.849 1021.062 $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 : 123 LATITUDE : 49 16.66130 N ! (deg min) LONGITUDE : 125 53.03950 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250429_203407 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:29 66 66 MERGEHDR 1.3 2026/01/16 10:35:43 66 66 HDREDIT2 3.2 2026/01/16 10:36:14 ? ? REMOVECH 8.2 2026/01/16 10:36:40 66 66 CALIB 12.1 2026/01/16 10:37:16 66 66 CLEAN 5.3 2026/01/16 10:37:53 66 66 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:14 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 10:36:40 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:16 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 11.256 3.06126 4.22176 26.54 1484.11 1020.155 0.45 0.45 11.354 3.04994 4.19472 26.36 1484.25 1020.001 0.75 0.75 11.431 3.03662 4.16763 26.18 1484.31 1019.849 1.05 1.05 11.444 3.06042 4.19882 26.40 1484.62 1020.017 1.35 1.35 11.457 3.06145 4.19869 26.40 1484.67 1020.016 1.65 1.65 11.415 3.06208 4.20441 26.43 1484.57 1020.052 1.95 1.95 11.288 3.05686 4.21190 26.47 1484.17 1020.106 2.25 2.25 11.175 3.05096 4.21698 26.50 1483.80 1020.146 2.55 2.55 11.072 3.04857 4.22567 26.55 1483.50 1020.204 2.85 2.85 10.979 3.04718 4.23468 26.60 1483.24 1020.262 3.15 3.15 10.916 3.04872 4.24424 26.66 1483.09 1020.320 3.45 3.45 10.876 3.05052 4.25146 26.71 1483.00 1020.364 3.75 3.75 10.848 3.05376 4.25927 26.76 1482.97 1020.410 4.05 4.05 10.825 3.05520 4.26406 26.79 1482.93 1020.439 4.35 4.35 10.814 3.05545 4.26568 26.80 1482.91 1020.450 4.65 4.65 10.804 3.05554 4.26701 26.81 1482.89 1020.459 4.95 4.95 10.796 3.05624 4.26896 26.82 1482.88 1020.472 5.25 5.25 10.787 3.05637 4.27024 26.83 1482.86 1020.481 5.55 5.55 10.776 3.05600 4.27103 26.83 1482.83 1020.487 5.85 5.84 10.770 3.05651 4.27244 26.84 1482.82 1020.497 6.15 6.14 10.767 3.05643 4.27272 26.84 1482.82 1020.500 6.45 6.44 10.764 3.05644 4.27304 26.85 1482.82 1020.503 6.75 6.74 10.758 3.05643 4.27382 26.85 1482.80 1020.509 7.05 7.04 10.749 3.05626 4.27461 26.86 1482.78 1020.516 7.35 7.34 10.736 3.05584 4.27561 26.86 1482.75 1020.523 7.65 7.64 10.725 3.05665 4.27805 26.88 1482.73 1020.539 7.95 7.94 10.712 3.05625 4.27902 26.88 1482.70 1020.546 8.25 8.24 10.702 3.05775 4.28232 26.90 1482.69 1020.566 8.55 8.54 10.694 3.05866 4.28449 26.92 1482.69 1020.580 8.85 8.84 10.684 3.06078 4.28877 26.95 1482.69 1020.605 9.15 9.14 10.675 3.06246 4.29217 26.97 1482.69 1020.625 9.45 9.44 10.666 3.06480 4.29650 27.00 1482.69 1020.651 9.75 9.74 10.661 3.06675 4.29984 27.02 1482.71 1020.671 10.05 10.04 10.657 3.06671 4.30023 27.02 1482.70 1020.674 10.35 10.34 10.656 3.06802 4.30226 27.04 1482.72 1020.687 10.65 10.64 10.654 3.06843 4.30302 27.04 1482.72 1020.692 10.95 10.94 10.653 3.06869 4.30355 27.05 1482.73 1020.696 11.25 11.24 10.653 3.06848 4.30324 27.04 1482.73 1020.696 11.55 11.54 10.652 3.06946 4.30470 27.05 1482.75 1020.705 11.85 11.84 10.651 3.07067 4.30657 27.07 1482.76 1020.717 12.15 12.14 10.652 3.07033 4.30602 27.06 1482.76 1020.715 12.45 12.44 10.652 3.07065 4.30647 27.06 1482.77 1020.719 12.75 12.74 10.651 3.06998 4.30555 27.06 1482.77 1020.715 13.05 13.04 10.651 3.07029 4.30603 27.06 1482.78 1020.719 13.35 13.34 10.650 3.07113 4.30729 27.07 1482.79 1020.727 13.65 13.64 10.651 3.07110 4.30723 27.07 1482.79 1020.728 13.95 13.93 10.650 3.07091 4.30705 27.07 1482.79 1020.728 14.25 14.23 10.649 3.07207 4.30882 27.08 1482.81 1020.739 14.55 14.53 10.648 3.07244 4.30941 27.08 1482.82 1020.744 14.85 14.83 10.646 3.07350 4.31117 27.10 1482.83 1020.755 15.15 15.13 10.644 3.07507 4.31363 27.11 1482.84 1020.770 15.45 15.43 10.641 3.07631 4.31574 27.13 1482.86 1020.782 15.75 15.73 10.637 3.08017 4.32165 27.17 1482.89 1020.816 16.05 16.03 10.634 3.08473 4.32834 27.21 1482.95 1020.854 16.35 16.33 10.630 3.08629 4.33108 27.23 1482.96 1020.870 16.65 16.63 10.627 3.08766 4.33336 27.25 1482.97 1020.884 16.95 16.93 10.625 3.08926 4.33582 27.26 1482.99 1020.899 17.25 17.23 10.621 3.08989 4.33713 27.27 1482.99 1020.907 17.55 17.53 10.621 3.09267 4.34107 27.30 1483.03 1020.930 17.85 17.83 10.622 3.09555 4.34499 27.33 1483.07 1020.952 18.15 18.13 10.620 3.09566 4.34537 27.33 1483.07 1020.956 18.45 18.43 10.617 3.09634 4.34671 27.34 1483.07 1020.964 18.75 18.73 10.615 3.09714 4.34802 27.35 1483.08 1020.973 19.05 19.03 10.613 3.09906 4.35101 27.37 1483.11 1020.991 19.35 19.33 10.611 3.10607 4.36106 27.44 1483.19 1021.046 19.77 19.75 10.615 3.10818 4.36362 27.46 1483.23 1021.062