*2026/01/16 10:37:52.37 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/10 18:37:33.000 END TIME : UTC 2025/04/10 18:37:53.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 105 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 31.28 2 Depth metres 0.15 31.23 3 Temperature 'deg C (ITS90)' 8.467 9.989 4 Conductivity S/m 0.82292 3.12608 5 Conductance:Specific S/m 1.20938 4.64553 6 Salinity PSS-78 6.77 29.16 7 Speed:Sound m/s 1451.52 1480.52 8 Density kg/m^3 1005.086 1022.767 $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 : 109 LATITUDE : 50 4.16750 N ! (deg min) LONGITUDE : 127 16.79830 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250410_183733 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:28 105 105 MERGEHDR 1.3 2026/01/16 10:35:42 105 105 HDREDIT2 3.2 2026/01/16 10:36:13 ? ? REMOVECH 8.2 2026/01/16 10:36:40 105 105 CALIB 12.1 2026/01/16 10:37:15 105 105 CLEAN 5.3 2026/01/16 10:37:52 105 105 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:13 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 10:37:15 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 8.954 0.82404 1.21345 6.79 1451.52 1005.109 0.45 0.46 9.022 0.82292 1.20938 6.77 1451.77 1005.086 0.75 0.76 9.200 0.84758 1.23914 6.95 1452.71 1005.214 1.05 1.06 9.421 1.07702 1.56448 8.94 1456.02 1006.745 1.35 1.37 9.515 1.22654 1.77682 10.26 1458.00 1007.765 1.65 1.67 9.608 1.36404 1.97071 11.48 1459.85 1008.705 1.95 1.97 9.757 1.81871 2.61634 15.63 1465.46 1011.912 2.25 2.28 9.842 2.33886 3.35634 20.52 1471.72 1015.704 2.55 2.58 9.934 2.72029 3.89349 24.16 1476.47 1018.523 2.85 2.88 9.964 2.79632 3.99889 24.88 1477.46 1019.083 3.15 3.18 9.981 2.88264 4.12028 25.72 1478.54 1019.731 3.45 3.48 9.989 2.94987 4.21542 26.37 1479.37 1020.242 3.75 3.78 9.894 3.02785 4.33859 27.21 1480.04 1020.913 4.05 4.08 9.859 3.04000 4.36046 27.36 1480.10 1021.035 4.35 4.37 9.834 3.05026 4.37825 27.48 1480.16 1021.134 4.65 4.67 9.783 3.05813 4.39608 27.60 1480.12 1021.235 4.95 4.97 9.734 3.06466 4.41156 27.70 1480.07 1021.323 5.25 5.27 9.710 3.05621 4.40250 27.63 1479.90 1021.277 5.55 5.57 9.693 3.04700 4.39135 27.56 1479.75 1021.219 5.85 5.87 9.671 3.06958 4.42678 27.80 1479.96 1021.413 6.15 6.17 9.660 3.07189 4.43151 27.83 1479.97 1021.440 6.45 6.47 9.661 3.08140 4.44505 27.92 1480.09 1021.515 6.75 6.77 9.650 3.08779 4.45563 28.00 1480.15 1021.574 7.05 7.07 9.650 3.09007 4.45895 28.02 1480.18 1021.593 7.35 7.37 9.642 3.09292 4.46408 28.05 1480.19 1021.623 7.65 7.67 9.632 3.09536 4.46897 28.09 1480.20 1021.651 7.95 7.97 9.619 3.09788 4.47422 28.12 1480.20 1021.682 8.25 8.27 9.624 3.09930 4.47571 28.13 1480.24 1021.691 8.55 8.57 9.629 3.10277 4.48002 28.16 1480.30 1021.715 8.85 8.87 9.630 3.10815 4.48763 28.21 1480.37 1021.758 9.15 9.16 9.628 3.11038 4.49108 28.24 1480.40 1021.778 9.45 9.46 9.626 3.11032 4.49127 28.24 1480.40 1021.780 9.75 9.76 9.619 3.10953 4.49109 28.24 1480.37 1021.781 10.05 10.06 9.622 3.10916 4.49010 28.23 1480.38 1021.777 10.35 10.36 9.622 3.11246 4.49486 28.26 1480.43 1021.804 10.65 10.66 9.620 3.11327 4.49636 28.27 1480.43 1021.813 10.95 10.96 9.609 3.11265 4.49689 28.28 1480.40 1021.818 11.25 11.26 9.598 3.11283 4.49863 28.29 1480.38 1021.829 11.55 11.56 9.592 3.11264 4.49907 28.29 1480.36 1021.833 11.85 11.86 9.590 3.11404 4.50138 28.30 1480.38 1021.847 12.15 12.16 9.583 3.11707 4.50661 28.34 1480.40 1021.877 12.45 12.46 9.576 3.11916 4.51056 28.37 1480.41 1021.901 12.75 12.76 9.573 3.12106 4.51376 28.39 1480.43 1021.919 13.05 13.05 9.577 3.12314 4.51627 28.41 1480.47 1021.934 13.35 13.35 9.582 3.12489 4.51811 28.42 1480.51 1021.945 13.65 13.65 9.576 3.12608 4.52055 28.44 1480.52 1021.960 13.95 13.95 9.565 3.12598 4.52190 28.44 1480.49 1021.969 14.25 14.25 9.552 3.12445 4.52136 28.44 1480.44 1021.968 14.55 14.55 9.538 3.12498 4.52396 28.45 1480.42 1021.984 14.85 14.85 9.510 3.12485 4.52741 28.47 1480.34 1022.006 15.15 15.15 9.481 3.12229 4.52752 28.47 1480.24 1022.010 15.45 15.45 9.457 3.11794 4.52444 28.45 1480.12 1021.996 15.75 15.75 9.431 3.11862 4.52880 28.47 1480.06 1022.022 16.05 16.05 9.404 3.11871 4.53249 28.50 1479.99 1022.045 16.35 16.35 9.373 3.11897 4.53689 28.52 1479.92 1022.072 16.65 16.65 9.336 3.11621 4.53781 28.53 1479.79 1022.080 16.95 16.94 9.302 3.11234 4.53661 28.51 1479.65 1022.077 17.25 17.24 9.281 3.10805 4.53314 28.49 1479.55 1022.060 17.55 17.54 9.253 3.10789 4.53668 28.51 1479.47 1022.082 17.85 17.84 9.228 3.10931 4.54209 28.54 1479.42 1022.114 18.15 18.14 9.215 3.10893 4.54329 28.55 1479.39 1022.123 18.45 18.44 9.205 3.10949 4.54542 28.56 1479.37 1022.136 18.75 18.74 9.197 3.10911 4.54592 28.56 1479.35 1022.141 19.05 19.04 9.191 3.10979 4.54771 28.58 1479.35 1022.152 19.35 19.34 9.183 3.10958 4.54838 28.58 1479.33 1022.157 19.65 19.64 9.172 3.10969 4.55011 28.59 1479.30 1022.169 19.95 19.94 9.159 3.10882 4.55057 28.59 1479.26 1022.173 20.25 20.24 9.149 3.10838 4.55126 28.59 1479.23 1022.179 20.55 20.53 9.141 3.10783 4.55146 28.59 1479.21 1022.181 20.85 20.83 9.122 3.10802 4.55429 28.61 1479.16 1022.199 21.15 21.13 9.103 3.10804 4.55682 28.63 1479.12 1022.215 21.45 21.43 9.093 3.10528 4.55407 28.61 1479.06 1022.202 21.75 21.73 9.081 3.10497 4.55531 28.61 1479.03 1022.210 22.05 22.03 9.065 3.10476 4.55709 28.62 1478.98 1022.222 22.35 22.33 9.048 3.10451 4.55903 28.63 1478.94 1022.235 22.65 22.63 9.028 3.10320 4.55971 28.64 1478.87 1022.241 22.95 22.93 9.014 3.10260 4.56074 28.64 1478.83 1022.248 23.25 23.23 8.996 3.10425 4.56555 28.67 1478.81 1022.276 23.55 23.53 8.980 3.10549 4.56955 28.70 1478.78 1022.300 23.85 23.83 8.952 3.10505 4.57268 28.72 1478.70 1022.320 24.15 24.12 8.935 3.10338 4.57249 28.71 1478.64 1022.321 24.45 24.42 8.928 3.10179 4.57115 28.70 1478.61 1022.315 24.75 24.72 8.910 3.10076 4.57200 28.71 1478.55 1022.322 25.05 25.02 8.877 3.10229 4.57876 28.75 1478.48 1022.361 25.35 25.32 8.850 3.10321 4.58381 28.78 1478.42 1022.391 25.65 25.62 8.827 3.10240 4.58564 28.79 1478.35 1022.403 25.95 25.92 8.811 3.10145 4.58643 28.79 1478.30 1022.410 26.25 26.22 8.794 3.10100 4.58805 28.80 1478.25 1022.420 26.55 26.52 8.766 3.10068 4.59145 28.82 1478.18 1022.441 26.85 26.82 8.745 3.10046 4.59400 28.84 1478.12 1022.457 27.15 27.12 8.715 3.10053 4.59808 28.86 1478.04 1022.482 27.45 27.41 8.695 3.10014 4.60035 28.87 1477.99 1022.496 27.75 27.71 8.676 3.10094 4.60412 28.90 1477.95 1022.519 28.05 28.01 8.668 3.10107 4.60535 28.90 1477.93 1022.527 28.35 28.31 8.673 3.10204 4.60618 28.91 1477.96 1022.533 28.65 28.61 8.667 3.10174 4.60652 28.91 1477.95 1022.536 28.95 28.91 8.654 3.10421 4.61190 28.95 1477.95 1022.567 29.25 29.21 8.643 3.10559 4.61550 28.97 1477.94 1022.588 29.55 29.51 8.620 3.10464 4.61725 28.98 1477.87 1022.600 29.85 29.81 8.582 3.10382 4.62128 29.00 1477.76 1022.625 30.15 30.11 8.539 3.10523 4.62923 29.05 1477.66 1022.671 30.45 30.40 8.515 3.10686 4.63498 29.09 1477.62 1022.704 30.75 30.70 8.498 3.10840 4.63973 29.12 1477.60 1022.732 31.05 31.00 8.471 3.10852 4.64359 29.14 1477.53 1022.755 31.28 31.23 8.467 3.10942 4.64553 29.16 1477.53 1022.767