*2026/01/16 10:37:50.99 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/09 16:05:09.000 END TIME : UTC 2025/04/09 16:05:19.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 53 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 15.69 2 Depth metres 0.15 15.68 3 Temperature 'deg C (ITS90)' 9.277 9.812 4 Conductivity S/m 1.77363 3.17099 5 Conductance:Specific S/m 2.58423 4.55664 6 Salinity PSS-78 15.39 28.71 7 Speed:Sound m/s 1463.33 1481.73 8 Density kg/m^3 1011.777 1022.142 $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 : 96 LATITUDE : 49 35.69310 N ! (deg min) LONGITUDE : 126 36.94420 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250409_160509 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:27 53 53 MERGEHDR 1.3 2026/01/16 10:35:41 53 53 HDREDIT2 3.2 2026/01/16 10:36:12 ? ? REMOVECH 8.2 2026/01/16 10:36:39 53 53 CALIB 12.1 2026/01/16 10:37:14 53 53 CLEAN 5.3 2026/01/16 10:37:50 53 53 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:12 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 10:36:39 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:14 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 9.277 1.77363 2.58720 15.41 1463.33 1011.793 0.45 0.45 9.319 1.77377 2.58423 15.39 1463.47 1011.777 0.75 0.76 9.393 1.83186 2.66310 15.91 1464.39 1012.171 1.05 1.06 9.464 1.99028 2.88751 17.38 1466.46 1013.309 1.35 1.36 9.522 2.18073 3.15847 19.17 1468.86 1014.698 1.65 1.66 9.547 2.26441 3.27727 19.97 1469.92 1015.312 1.95 1.96 9.546 2.31013 3.34354 20.41 1470.46 1015.658 2.25 2.26 9.577 2.39174 3.45858 21.18 1471.52 1016.257 2.55 2.56 9.619 2.54255 3.67222 22.62 1473.43 1017.376 2.85 2.86 9.633 2.66033 3.84074 23.77 1474.88 1018.266 3.15 3.16 9.630 2.70142 3.90040 24.18 1475.37 1018.584 3.45 3.46 9.643 2.75780 3.98027 24.72 1476.09 1019.009 3.75 3.76 9.660 2.85134 4.11325 25.63 1477.26 1019.718 4.05 4.06 9.664 2.93008 4.22640 26.41 1478.23 1020.326 4.35 4.36 9.662 2.97072 4.28525 26.82 1478.72 1020.644 4.65 4.66 9.667 2.98636 4.30722 26.97 1478.92 1020.763 4.95 4.96 9.672 3.00761 4.33724 27.18 1479.20 1020.926 5.25 5.26 9.667 3.02634 4.36482 27.37 1479.42 1021.076 5.55 5.56 9.667 3.04262 4.38841 27.53 1479.62 1021.205 5.85 5.86 9.669 3.05181 4.40141 27.62 1479.74 1021.276 6.15 6.16 9.662 3.06301 4.41834 27.74 1479.87 1021.369 6.45 6.46 9.652 3.06410 4.42118 27.76 1479.86 1021.386 6.75 6.76 9.644 3.06950 4.43003 27.82 1479.91 1021.436 7.05 7.06 9.629 3.07362 4.43795 27.87 1479.92 1021.481 7.35 7.36 9.609 3.07701 4.44544 27.92 1479.91 1021.524 7.65 7.66 9.599 3.07791 4.44792 27.94 1479.90 1021.539 7.95 7.96 9.590 3.07766 4.44877 27.94 1479.87 1021.546 8.25 8.26 9.580 3.07742 4.44972 27.95 1479.85 1021.553 8.55 8.56 9.576 3.07975 4.45363 27.97 1479.87 1021.576 8.85 8.85 9.575 3.08445 4.46055 28.02 1479.93 1021.614 9.15 9.15 9.580 3.08952 4.46723 28.07 1480.01 1021.652 9.45 9.45 9.579 3.09999 4.48248 28.17 1480.14 1021.735 9.75 9.75 9.579 3.10291 4.48672 28.20 1480.18 1021.760 10.05 10.05 9.588 3.10893 4.49422 28.26 1480.28 1021.801 10.35 10.35 9.609 3.11352 4.49808 28.28 1480.40 1021.822 10.65 10.65 9.622 3.11714 4.50166 28.31 1480.49 1021.842 10.95 10.95 9.634 3.11822 4.50171 28.31 1480.54 1021.843 11.25 11.25 9.645 3.12223 4.50610 28.34 1480.62 1021.867 11.55 11.55 9.657 3.12662 4.51078 28.38 1480.71 1021.893 11.85 11.85 9.671 3.12991 4.51372 28.40 1480.80 1021.909 12.15 12.15 9.698 3.13410 4.51620 28.42 1480.93 1021.922 12.45 12.45 9.730 3.14869 4.53315 28.54 1481.19 1022.014 12.75 12.75 9.742 3.15740 4.54402 28.62 1481.34 1022.073 13.05 13.04 9.758 3.16527 4.55336 28.69 1481.48 1022.124 13.35 13.34 9.773 3.16893 4.55654 28.71 1481.57 1022.142 13.65 13.64 9.789 3.17046 4.55664 28.71 1481.64 1022.142 13.95 13.94 9.800 3.17072 4.55570 28.71 1481.68 1022.138 14.25 14.24 9.807 3.17020 4.55399 28.69 1481.69 1022.129 14.55 14.54 9.812 3.17099 4.55449 28.70 1481.72 1022.133 14.85 14.84 9.812 3.17095 4.55438 28.70 1481.73 1022.134 15.15 15.14 9.811 3.16999 4.55316 28.69 1481.72 1022.128 15.45 15.44 9.800 3.16968 4.55411 28.69 1481.69 1022.136 15.69 15.68 9.797 3.17002 4.55503 28.70 1481.69 1022.142