*2026/01/16 09:47:06.03 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/12/20 22:00:42.000 END TIME : UTC 2023/12/20 22:01:00.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 92 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 27.35 2 Depth metres 0.15 27.24 3 Temperature 'deg C (ITS90)' 9.696 11.417 4 Conductivity S/m 2.53381 3.65616 5 Conductance:Specific S/m 3.65146 5.02359 6 Salinity PSS-78 22.49 32.18 7 Speed:Sound m/s 1473.52 1491.83 8 Density kg/m^3 1017.25 1024.631 $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 : 116 LATITUDE : 50 27.73610 N ! (deg min) LONGITUDE : 127 31.68390 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231220_220042 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:53 92 92 MERGEHDR 1.3 2026/01/15 13:41:49 92 92 HDREDIT2 3.2 2026/01/15 14:00:58 ? ? REMOVECH 8.2 2026/01/15 14:01:19 92 92 CALIB 12.1 2026/01/16 09:46:13 92 92 CLEAN 5.3 2026/01/16 09:47:06 92 92 $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 14:01:19 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:13 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 9.696 2.53381 3.65146 22.49 1473.52 1017.250 0.45 0.45 9.853 2.81058 4.03206 25.10 1477.27 1019.257 0.75 0.75 10.094 2.96737 4.22779 26.47 1479.83 1020.289 1.05 1.05 10.260 3.19006 4.52364 28.54 1482.94 1021.877 1.35 1.35 10.263 3.20846 4.54930 28.72 1483.18 1022.017 1.65 1.65 10.266 3.23903 4.59226 29.02 1483.56 1022.252 1.95 1.95 10.242 3.25420 4.61692 29.19 1483.68 1022.389 2.25 2.25 10.260 3.26901 4.63557 29.32 1483.91 1022.491 2.55 2.55 10.294 3.29351 4.66586 29.54 1484.30 1022.655 2.85 2.84 10.321 3.30867 4.68371 29.67 1484.56 1022.752 3.15 3.14 10.345 3.32713 4.70662 29.83 1484.85 1022.876 3.45 3.44 10.385 3.33854 4.71751 29.91 1485.09 1022.934 3.75 3.74 10.409 3.35277 4.73438 30.03 1485.33 1023.026 4.05 4.04 10.432 3.35567 4.73531 30.04 1485.43 1023.031 4.35 4.34 10.442 3.36457 4.74659 30.12 1485.57 1023.093 4.65 4.64 10.447 3.36639 4.74842 30.13 1485.61 1023.104 4.95 4.94 10.454 3.37072 4.75367 30.17 1485.68 1023.133 5.25 5.24 10.466 3.37329 4.75567 30.19 1485.75 1023.145 5.55 5.53 10.474 3.37644 4.75899 30.21 1485.82 1023.163 5.85 5.83 10.475 3.37936 4.76297 30.24 1485.86 1023.186 6.15 6.13 10.482 3.38104 4.76441 30.25 1485.90 1023.195 6.45 6.43 10.491 3.38151 4.76384 30.25 1485.93 1023.192 6.75 6.73 10.506 3.38564 4.76769 30.28 1486.03 1023.214 7.05 7.03 10.531 3.39389 4.77602 30.34 1486.19 1023.259 7.35 7.33 10.543 3.39570 4.77688 30.34 1486.25 1023.264 7.65 7.63 10.553 3.39622 4.77631 30.34 1486.29 1023.261 7.95 7.93 10.563 3.40015 4.78042 30.37 1486.37 1023.284 8.25 8.22 10.579 3.40439 4.78427 30.40 1486.46 1023.305 8.55 8.52 10.597 3.40974 4.78936 30.44 1486.58 1023.333 8.85 8.82 10.610 3.41270 4.79177 30.46 1486.65 1023.346 9.15 9.12 10.623 3.41399 4.79188 30.46 1486.71 1023.347 9.45 9.42 10.636 3.41557 4.79230 30.46 1486.76 1023.350 9.75 9.72 10.637 3.41682 4.79391 30.47 1486.79 1023.360 10.05 10.02 10.638 3.41901 4.79683 30.49 1486.82 1023.377 10.35 10.32 10.642 3.42002 4.79771 30.50 1486.85 1023.383 10.65 10.61 10.647 3.42066 4.79792 30.50 1486.87 1023.385 10.95 10.91 10.649 3.42209 4.79966 30.52 1486.90 1023.396 11.25 11.21 10.655 3.42457 4.80231 30.53 1486.95 1023.411 11.55 11.51 10.662 3.42771 4.80580 30.56 1487.01 1023.431 11.85 11.81 10.667 3.42941 4.80756 30.57 1487.05 1023.441 12.15 12.11 10.673 3.43149 4.80961 30.59 1487.09 1023.453 12.45 12.41 10.695 3.43586 4.81282 30.61 1487.20 1023.470 12.75 12.71 10.704 3.43829 4.81494 30.63 1487.26 1023.483 13.05 13.00 10.706 3.44051 4.81785 30.65 1487.30 1023.500 13.35 13.30 10.711 3.44114 4.81806 30.65 1487.32 1023.502 13.65 13.60 10.717 3.44404 4.82128 30.67 1487.38 1023.520 13.95 13.90 10.723 3.44593 4.82310 30.69 1487.42 1023.531 14.25 14.20 10.733 3.44964 4.82697 30.72 1487.49 1023.553 14.55 14.50 10.746 3.45461 4.83211 30.75 1487.59 1023.581 14.85 14.80 10.768 3.45945 4.83599 30.78 1487.71 1023.602 15.15 15.10 10.783 3.46571 4.84263 30.83 1487.83 1023.638 15.45 15.39 10.788 3.46720 4.84407 30.84 1487.86 1023.647 15.75 15.69 10.798 3.47161 4.84886 30.88 1487.95 1023.674 16.05 15.99 10.813 3.47294 4.84873 30.88 1488.00 1023.673 16.35 16.29 10.832 3.47675 4.85153 30.90 1488.10 1023.688 16.65 16.59 10.838 3.47927 4.85422 30.92 1488.15 1023.704 16.95 16.89 10.853 3.48583 4.86128 30.97 1488.27 1023.743 17.25 17.19 10.871 3.49235 4.86786 31.02 1488.40 1023.779 17.55 17.49 10.903 3.49687 4.86988 31.04 1488.54 1023.788 17.85 17.78 10.928 3.49976 4.87055 31.04 1488.64 1023.791 18.15 18.08 10.943 3.50236 4.87210 31.06 1488.72 1023.800 18.45 18.38 10.951 3.50988 4.88148 31.12 1488.83 1023.852 18.75 18.68 10.967 3.51776 4.89023 31.19 1488.97 1023.900 19.05 18.98 10.992 3.52800 4.90108 31.27 1489.16 1023.959 19.35 19.28 11.021 3.53610 4.90838 31.32 1489.33 1023.998 19.65 19.58 11.038 3.53684 4.90712 31.32 1489.39 1023.991 19.95 19.87 11.053 3.54196 4.91210 31.35 1489.49 1024.018 20.25 20.17 11.086 3.55376 4.92404 31.44 1489.72 1024.082 20.55 20.47 11.158 3.57440 4.94281 31.58 1490.15 1024.181 20.85 20.77 11.184 3.58624 4.95556 31.68 1490.36 1024.250 21.15 21.07 11.215 3.58770 4.95331 31.66 1490.46 1024.236 21.45 21.37 11.228 3.59067 4.95569 31.68 1490.53 1024.249 21.75 21.67 11.241 3.59243 4.95627 31.69 1490.59 1024.253 22.05 21.96 11.261 3.59490 4.95702 31.69 1490.67 1024.256 22.35 22.26 11.272 3.59806 4.95979 31.71 1490.74 1024.272 22.65 22.56 11.291 3.60593 4.96813 31.78 1490.88 1024.318 22.95 22.86 11.310 3.61280 4.97493 31.83 1491.02 1024.354 23.25 23.16 11.325 3.61981 4.98252 31.88 1491.14 1024.396 23.55 23.46 11.340 3.62300 4.98491 31.90 1491.22 1024.410 23.85 23.76 11.351 3.62713 4.98910 31.93 1491.30 1024.433 24.15 24.05 11.358 3.63074 4.99303 31.96 1491.36 1024.455 24.45 24.35 11.361 3.63264 4.99529 31.98 1491.40 1024.469 24.75 24.65 11.361 3.63578 4.99962 32.01 1491.44 1024.494 25.05 24.95 11.367 3.63730 5.00089 32.02 1491.48 1024.502 25.35 25.25 11.368 3.64325 5.00892 32.07 1491.55 1024.547 25.65 25.55 11.388 3.64285 5.00553 32.05 1491.60 1024.528 25.95 25.84 11.382 3.64419 5.00825 32.07 1491.61 1024.545 26.25 26.14 11.370 3.64978 5.01754 32.13 1491.65 1024.599 26.55 26.44 11.390 3.65616 5.02359 32.18 1491.78 1024.631 26.85 26.74 11.417 3.65445 5.01745 32.14 1491.83 1024.596 27.15 27.04 11.372 3.65050 5.01832 32.14 1491.68 1024.606 27.35 27.24 11.352 3.64941 5.01949 32.15 1491.62 1024.615