*2026/01/16 09:47:05.88 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/12/20 19:33:51.000 END TIME : UTC 2023/12/20 19:34:06.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 79 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 23.55 2 Depth metres 0.15 23.48 3 Temperature 'deg C (ITS90)' 8.492 10.602 4 Conductivity S/m 1.74317 3.44419 5 Conductance:Specific S/m 2.60237 4.83739 6 Salinity PSS-78 15.46 30.77 7 Speed:Sound m/s 1460.32 1487.24 8 Density kg/m^3 1011.921 1023.66 $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 : 2023-031 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 112 LATITUDE : 50 34.11470 N ! (deg min) LONGITUDE : 127 33.37550 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231220_193351 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:53 79 79 MERGEHDR 1.3 2026/01/15 13:41:49 79 79 HDREDIT2 3.2 2026/01/15 14:00:58 ? ? REMOVECH 8.2 2026/01/15 14:01:18 79 79 CALIB 12.1 2026/01/16 09:46:12 79 79 CLEAN 5.3 2026/01/16 09:47:05 79 79 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:58 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 2026/01/15 14:01:18 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:12 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 09:47:01 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 8.492 1.74317 2.60237 15.46 1460.32 1011.921 0.45 0.45 8.633 1.84428 2.74179 16.37 1461.99 1012.619 0.75 0.75 8.719 1.99715 2.96147 17.82 1464.10 1013.735 1.05 1.06 8.982 2.23453 3.28777 19.99 1467.78 1015.402 1.35 1.36 9.083 2.34770 3.44411 21.04 1469.46 1016.210 1.65 1.66 9.196 2.42211 3.54156 21.71 1470.70 1016.714 1.95 1.96 9.385 2.60333 3.78556 23.37 1473.45 1017.987 2.25 2.26 9.695 2.79744 4.03150 25.08 1476.69 1019.273 2.55 2.56 9.989 2.95697 4.22556 26.44 1479.44 1020.293 2.85 2.86 10.063 3.01898 4.30504 27.00 1480.39 1020.716 3.15 3.16 10.116 3.06792 4.36833 27.44 1481.13 1021.055 3.45 3.46 10.217 3.14483 4.46500 28.13 1482.33 1021.572 3.75 3.76 10.270 3.20040 4.53701 28.63 1483.14 1021.960 4.05 4.06 10.319 3.23408 4.57845 28.93 1483.68 1022.183 4.35 4.35 10.379 3.27186 4.62400 29.25 1484.29 1022.428 4.65 4.65 10.422 3.29007 4.64411 29.40 1484.63 1022.536 4.95 4.95 10.458 3.30801 4.66471 29.55 1484.94 1022.646 5.25 5.25 10.496 3.34145 4.70686 29.85 1485.45 1022.875 5.55 5.55 10.530 3.35882 4.72671 29.99 1485.75 1022.982 5.85 5.85 10.555 3.37602 4.74755 30.14 1486.03 1023.096 6.15 6.15 10.569 3.38202 4.75419 30.19 1486.14 1023.132 6.45 6.45 10.575 3.38567 4.75843 30.22 1486.20 1023.156 6.75 6.75 10.576 3.38837 4.76213 30.24 1486.24 1023.178 7.05 7.05 10.575 3.38960 4.76401 30.26 1486.26 1023.189 7.35 7.34 10.568 3.38857 4.76346 30.25 1486.23 1023.188 7.65 7.64 10.561 3.38913 4.76518 30.26 1486.23 1023.199 7.95 7.94 10.568 3.39024 4.76583 30.27 1486.26 1023.204 8.25 8.24 10.569 3.39026 4.76572 30.27 1486.27 1023.204 8.55 8.54 10.572 3.39148 4.76709 30.28 1486.30 1023.213 8.85 8.84 10.575 3.39349 4.76955 30.30 1486.33 1023.227 9.15 9.14 10.579 3.39411 4.76988 30.30 1486.35 1023.230 9.45 9.44 10.579 3.39482 4.77083 30.30 1486.37 1023.237 9.75 9.73 10.576 3.39505 4.77154 30.31 1486.37 1023.242 10.05 10.03 10.576 3.39493 4.77144 30.31 1486.37 1023.243 10.35 10.33 10.576 3.39481 4.77122 30.31 1486.37 1023.243 10.65 10.63 10.577 3.39564 4.77223 30.31 1486.39 1023.250 10.95 10.93 10.577 3.39618 4.77300 30.32 1486.40 1023.255 11.25 11.23 10.577 3.39654 4.77351 30.32 1486.41 1023.259 11.55 11.53 10.580 3.39825 4.77545 30.34 1486.45 1023.271 11.85 11.83 10.580 3.39978 4.77768 30.35 1486.47 1023.284 12.15 12.13 10.579 3.40032 4.77858 30.36 1486.48 1023.291 12.45 12.42 10.582 3.40193 4.78042 30.37 1486.51 1023.302 12.75 12.72 10.581 3.40191 4.78047 30.37 1486.51 1023.303 13.05 13.02 10.582 3.40217 4.78069 30.37 1486.52 1023.306 13.35 13.32 10.582 3.40208 4.78067 30.37 1486.52 1023.307 13.65 13.62 10.583 3.40314 4.78193 30.38 1486.55 1023.315 13.95 13.92 10.583 3.40351 4.78246 30.39 1486.56 1023.319 14.25 14.22 10.582 3.40362 4.78275 30.39 1486.56 1023.322 14.55 14.52 10.584 3.40381 4.78284 30.39 1486.57 1023.324 14.85 14.81 10.585 3.40377 4.78265 30.39 1486.58 1023.324 15.15 15.11 10.581 3.40425 4.78382 30.39 1486.58 1023.332 15.45 15.41 10.583 3.40582 4.78571 30.41 1486.61 1023.343 15.75 15.71 10.584 3.40540 4.78505 30.40 1486.61 1023.341 16.05 16.01 10.584 3.40656 4.78665 30.41 1486.63 1023.351 16.35 16.31 10.586 3.40745 4.78760 30.42 1486.65 1023.357 16.65 16.61 10.585 3.40738 4.78765 30.42 1486.65 1023.359 16.95 16.91 10.582 3.40830 4.78940 30.43 1486.66 1023.370 17.25 17.20 10.586 3.40844 4.78903 30.43 1486.67 1023.369 17.55 17.50 10.586 3.40846 4.78903 30.43 1486.68 1023.370 17.85 17.80 10.588 3.40988 4.79082 30.44 1486.70 1023.381 18.15 18.10 10.587 3.41055 4.79187 30.45 1486.72 1023.388 18.45 18.40 10.588 3.41453 4.79733 30.49 1486.77 1023.419 18.75 18.70 10.590 3.41633 4.79963 30.51 1486.80 1023.433 19.05 19.00 10.594 3.41956 4.80357 30.53 1486.86 1023.456 19.35 19.30 10.593 3.42213 4.80728 30.56 1486.89 1023.477 19.65 19.60 10.592 3.42228 4.80760 30.56 1486.89 1023.480 19.95 19.89 10.594 3.42304 4.80852 30.57 1486.91 1023.487 20.25 20.19 10.595 3.42301 4.80829 30.57 1486.92 1023.487 20.55 20.49 10.595 3.42360 4.80913 30.57 1486.93 1023.492 20.85 20.79 10.593 3.42569 4.81228 30.59 1486.96 1023.511 21.15 21.09 10.595 3.42795 4.81521 30.61 1486.99 1023.528 21.45 21.39 10.594 3.42992 4.81815 30.64 1487.02 1023.546 21.75 21.69 10.594 3.43237 4.82158 30.66 1487.05 1023.566 22.05 21.99 10.596 3.43632 4.82689 30.70 1487.11 1023.596 22.35 22.28 10.598 3.43718 4.82773 30.70 1487.13 1023.602 22.65 22.58 10.600 3.43796 4.82854 30.71 1487.15 1023.607 22.95 22.88 10.600 3.43818 4.82896 30.71 1487.16 1023.611 23.25 23.18 10.602 3.44258 4.83483 30.75 1487.22 1023.644 23.55 23.48 10.600 3.44419 4.83739 30.77 1487.24 1023.660