*2026/01/16 10:37:52.83 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/29 17:33:13.000 END TIME : UTC 2025/04/29 17:33:30.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 89 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 26.41 2 Depth metres 0.15 26.4 3 Temperature 'deg C (ITS90)' 10.61 10.773 4 Conductivity S/m 2.9029 3.02368 5 Conductance:Specific S/m 4.05821 4.24538 6 Salinity PSS-78 25.36 26.63 7 Speed:Sound m/s 1480.94 1482.33 8 Density kg/m^3 1019.326 1020.451 $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 : 118 LATITUDE : 49 13.97610 N ! (deg min) LONGITUDE : 125 46.55990 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250429_173313 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:28 89 89 MERGEHDR 1.3 2026/01/16 10:35:42 89 89 HDREDIT2 3.2 2026/01/16 10:36:13 ? ? REMOVECH 8.2 2026/01/16 10:36:40 89 89 CALIB 12.1 2026/01/16 10:37:16 89 89 CLEAN 5.3 2026/01/16 10:37:52 89 89 $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 10:37:16 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 10.759 2.90623 4.06368 25.40 1480.95 1019.352 0.45 0.45 10.763 2.90516 4.06172 25.39 1480.96 1019.343 0.75 0.75 10.764 2.90290 4.05837 25.36 1480.94 1019.326 1.05 1.05 10.766 2.90294 4.05821 25.36 1480.95 1019.326 1.35 1.35 10.767 2.90774 4.06479 25.41 1481.01 1019.363 1.65 1.65 10.772 2.90885 4.06582 25.42 1481.05 1019.369 1.95 1.95 10.773 2.90930 4.06638 25.42 1481.06 1019.373 2.25 2.25 10.770 2.90947 4.06689 25.42 1481.06 1019.378 2.55 2.55 10.768 2.90968 4.06740 25.43 1481.06 1019.382 2.85 2.85 10.767 2.90968 4.06760 25.43 1481.06 1019.384 3.15 3.15 10.764 2.90941 4.06752 25.43 1481.05 1019.385 3.45 3.45 10.761 2.90944 4.06786 25.43 1481.05 1019.389 3.75 3.75 10.761 2.91075 4.06977 25.44 1481.07 1019.400 4.05 4.05 10.759 2.91049 4.06957 25.44 1481.07 1019.401 4.35 4.35 10.757 2.91153 4.07127 25.45 1481.08 1019.411 4.65 4.65 10.755 2.91146 4.07135 25.45 1481.08 1019.413 4.95 4.95 10.754 2.91101 4.07084 25.45 1481.07 1019.412 5.25 5.25 10.755 2.91162 4.07166 25.45 1481.09 1019.417 5.55 5.55 10.754 2.91180 4.07200 25.46 1481.09 1019.421 5.85 5.85 10.753 2.91187 4.07221 25.46 1481.09 1019.423 6.15 6.15 10.753 2.91182 4.07219 25.46 1481.10 1019.424 6.45 6.45 10.752 2.91144 4.07173 25.45 1481.10 1019.423 6.75 6.75 10.752 2.91139 4.07169 25.45 1481.10 1019.424 7.05 7.05 10.751 2.91287 4.07384 25.47 1481.12 1019.437 7.35 7.35 10.751 2.91274 4.07360 25.47 1481.12 1019.437 7.65 7.65 10.750 2.91262 4.07355 25.46 1481.13 1019.438 7.95 7.95 10.751 2.91172 4.07222 25.46 1481.12 1019.432 8.25 8.25 10.750 2.91205 4.07280 25.46 1481.13 1019.437 8.55 8.55 10.750 2.91330 4.07460 25.47 1481.14 1019.448 8.85 8.85 10.748 2.91480 4.07685 25.49 1481.16 1019.461 9.15 9.15 10.747 2.91626 4.07906 25.50 1481.18 1019.475 9.45 9.45 10.745 2.91872 4.08269 25.53 1481.21 1019.495 9.75 9.75 10.744 2.91861 4.08267 25.53 1481.21 1019.497 10.05 10.05 10.742 2.92044 4.08543 25.55 1481.23 1019.513 10.35 10.35 10.741 2.92246 4.08833 25.57 1481.26 1019.530 10.65 10.65 10.741 2.92157 4.08712 25.56 1481.25 1019.525 10.95 10.95 10.739 2.92398 4.09073 25.58 1481.28 1019.545 11.25 11.25 10.738 2.92575 4.09331 25.60 1481.30 1019.561 11.55 11.55 10.737 2.92691 4.09508 25.61 1481.32 1019.572 11.85 11.85 10.735 2.92708 4.09554 25.61 1481.32 1019.575 12.15 12.15 10.734 2.92608 4.09430 25.60 1481.31 1019.570 12.45 12.45 10.732 2.92704 4.09587 25.62 1481.32 1019.580 12.75 12.75 10.727 2.92724 4.09666 25.62 1481.31 1019.586 13.05 13.05 10.722 2.93427 4.10704 25.69 1481.38 1019.643 13.35 13.35 10.722 2.93746 4.11157 25.72 1481.42 1019.669 13.65 13.65 10.721 2.93731 4.11150 25.72 1481.42 1019.670 13.95 13.95 10.721 2.93883 4.11354 25.74 1481.45 1019.682 14.25 14.25 10.720 2.94028 4.11579 25.75 1481.47 1019.696 14.55 14.55 10.717 2.94297 4.11987 25.78 1481.49 1019.719 14.85 14.85 10.715 2.94519 4.12322 25.80 1481.52 1019.738 15.15 15.15 10.711 2.94515 4.12354 25.80 1481.51 1019.742 15.45 15.45 10.708 2.94671 4.12615 25.82 1481.53 1019.757 15.75 15.75 10.707 2.94758 4.12745 25.83 1481.54 1019.766 16.05 16.05 10.705 2.94944 4.13032 25.85 1481.56 1019.783 16.35 16.35 10.701 2.95199 4.13428 25.88 1481.58 1019.805 16.65 16.65 10.697 2.95571 4.13995 25.91 1481.62 1019.837 16.95 16.95 10.693 2.96019 4.14679 25.96 1481.67 1019.876 17.25 17.25 10.689 2.95941 4.14606 25.96 1481.65 1019.873 17.55 17.55 10.687 2.95915 4.14595 25.96 1481.65 1019.874 17.85 17.85 10.682 2.96362 4.15277 26.00 1481.69 1019.913 18.15 18.15 10.677 2.96612 4.15689 26.03 1481.71 1019.936 18.45 18.45 10.673 2.97039 4.16341 26.07 1481.75 1019.973 18.75 18.75 10.669 2.97252 4.16675 26.10 1481.77 1019.992 19.05 19.05 10.669 2.97408 4.16902 26.11 1481.79 1020.006 19.35 19.35 10.670 2.97358 4.16823 26.11 1481.80 1020.003 19.65 19.65 10.669 2.97372 4.16845 26.11 1481.80 1020.006 19.95 19.95 10.661 2.97759 4.17488 26.15 1481.83 1020.042 20.25 20.25 10.653 2.98560 4.18707 26.23 1481.90 1020.109 20.55 20.55 10.649 2.98897 4.19219 26.27 1481.94 1020.139 20.85 20.85 10.647 2.99034 4.19442 26.28 1481.95 1020.152 21.15 21.15 10.645 2.99078 4.19525 26.29 1481.96 1020.158 21.45 21.44 10.644 2.98948 4.19358 26.28 1481.94 1020.150 21.75 21.74 10.643 2.98676 4.18984 26.25 1481.91 1020.132 22.05 22.04 10.644 2.98647 4.18932 26.25 1481.92 1020.130 22.35 22.34 10.642 2.98565 4.18839 26.24 1481.91 1020.127 22.65 22.64 10.642 2.98602 4.18894 26.25 1481.92 1020.131 22.95 22.94 10.640 2.98680 4.19026 26.25 1481.93 1020.139 23.25 23.24 10.636 2.98835 4.19286 26.27 1481.94 1020.155 23.55 23.54 10.633 2.98946 4.19474 26.28 1481.95 1020.167 23.85 23.84 10.636 2.99039 4.19576 26.29 1481.97 1020.173 24.15 24.14 10.636 2.99378 4.20051 26.32 1482.02 1020.200 24.45 24.44 10.631 2.99843 4.20757 26.37 1482.06 1020.240 24.75 24.74 10.627 3.00266 4.21397 26.42 1482.11 1020.276 25.05 25.04 10.622 3.00733 4.22116 26.47 1482.15 1020.316 25.35 25.34 10.616 3.01454 4.23195 26.54 1482.22 1020.376 25.65 25.64 10.613 3.02147 4.24206 26.61 1482.30 1020.432 25.95 25.94 10.611 3.02368 4.24538 26.63 1482.33 1020.451 26.25 26.24 10.611 3.02292 4.24439 26.63 1482.32 1020.447 26.41 26.40 10.610 3.01923 4.23925 26.59 1482.28 1020.420