*2026/01/16 10:37:54.15 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/09 15:08:59.000 END TIME : UTC 2025/05/09 15:09:17.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 94 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 28.12 2 Depth metres 0.15 27.98 3 Temperature 'deg C (ITS90)' 8.543 11.839 4 Conductivity S/m 3.31451 3.43751 5 Conductance:Specific S/m 4.49867 5.039 6 Salinity PSS-78 28.52 31.91 7 Speed:Sound m/s 1481.16 1488.86 8 Density kg/m^3 1021.595 1024.901 $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 : 148 LATITUDE : 48 51.17940 N ! (deg min) LONGITUDE : 125 11.91470 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250509_150859 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:30 94 94 MERGEHDR 1.3 2026/01/16 10:35:44 94 94 HDREDIT2 3.2 2026/01/16 10:36:15 ? ? REMOVECH 8.2 2026/01/16 10:36:41 94 94 CALIB 12.1 2026/01/16 10:37:17 94 94 CLEAN 5.3 2026/01/16 10:37:54 94 94 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:15 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 10:36:41 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:17 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 11.839 3.31451 4.49867 28.52 1488.54 1021.595 0.45 0.45 11.737 3.36559 4.58072 29.09 1488.86 1022.054 0.75 0.75 11.582 3.37831 4.61747 29.33 1488.62 1022.271 1.05 1.05 11.356 3.40118 4.67758 29.73 1488.31 1022.623 1.35 1.35 11.247 3.42539 4.72511 30.06 1488.31 1022.895 1.65 1.65 11.258 3.43352 4.73481 30.13 1488.44 1022.948 1.95 1.94 11.199 3.43447 4.74394 30.19 1488.31 1023.005 2.25 2.24 11.134 3.43630 4.75491 30.26 1488.17 1023.072 2.55 2.54 11.064 3.43751 4.76589 30.33 1488.01 1023.140 2.85 2.84 10.932 3.43611 4.78135 30.42 1487.66 1023.237 3.15 3.14 10.827 3.43454 4.79323 30.49 1487.38 1023.313 3.45 3.44 10.756 3.43312 4.80075 30.54 1487.19 1023.361 3.75 3.74 10.672 3.43161 4.80991 30.59 1486.96 1023.419 4.05 4.04 10.589 3.43050 4.81964 30.65 1486.73 1023.481 4.35 4.34 10.510 3.43009 4.82970 30.71 1486.53 1023.543 4.65 4.63 10.439 3.42928 4.83828 30.77 1486.34 1023.597 4.95 4.93 10.386 3.42807 4.84383 30.80 1486.20 1023.633 5.25 5.23 10.333 3.42678 4.84928 30.83 1486.05 1023.668 5.55 5.53 10.269 3.42678 4.85804 30.88 1485.89 1023.722 5.85 5.83 10.188 3.42654 4.86897 30.95 1485.68 1023.789 6.15 6.13 10.076 3.42532 4.88274 31.03 1485.38 1023.874 6.45 6.43 10.001 3.42164 4.88788 31.06 1485.15 1023.908 6.75 6.73 9.915 3.41898 4.89609 31.11 1484.90 1023.960 7.05 7.02 9.789 3.41656 4.91046 31.19 1484.55 1024.048 7.35 7.32 9.679 3.41357 4.92162 31.26 1484.23 1024.117 7.65 7.62 9.599 3.41240 4.93142 31.32 1484.01 1024.177 7.95 7.92 9.531 3.41148 4.93968 31.37 1483.83 1024.227 8.25 8.22 9.463 3.41041 4.94787 31.41 1483.65 1024.277 8.55 8.52 9.397 3.41061 4.95767 31.47 1483.48 1024.336 8.85 8.82 9.342 3.41059 4.96559 31.52 1483.34 1024.384 9.15 9.11 9.330 3.40950 4.96573 31.52 1483.30 1024.386 9.45 9.41 9.318 3.40954 4.96753 31.53 1483.28 1024.398 9.75 9.71 9.309 3.40937 4.96855 31.54 1483.25 1024.405 10.05 10.01 9.298 3.40931 4.97009 31.55 1483.23 1024.416 10.35 10.31 9.287 3.40888 4.97106 31.55 1483.20 1024.423 10.65 10.61 9.282 3.40896 4.97191 31.56 1483.19 1024.429 10.95 10.91 9.268 3.40888 4.97385 31.57 1483.16 1024.442 11.25 11.20 9.246 3.40923 4.97758 31.59 1483.11 1024.464 11.55 11.50 9.226 3.40921 4.98046 31.61 1483.06 1024.482 11.85 11.80 9.201 3.40950 4.98451 31.63 1483.01 1024.507 12.15 12.10 9.180 3.40993 4.98812 31.66 1482.96 1024.529 12.45 12.40 9.173 3.41052 4.99010 31.67 1482.96 1024.542 12.75 12.70 9.168 3.41065 4.99105 31.68 1482.95 1024.548 13.05 12.99 9.164 3.41096 4.99207 31.68 1482.95 1024.556 13.35 13.29 9.164 3.41115 4.99234 31.68 1482.95 1024.558 13.65 13.59 9.164 3.41188 4.99343 31.69 1482.97 1024.566 13.95 13.89 9.162 3.41233 4.99440 31.70 1482.97 1024.572 14.25 14.19 9.157 3.41291 4.99598 31.71 1482.97 1024.582 14.55 14.49 9.153 3.41127 4.99412 31.69 1482.95 1024.574 14.85 14.79 9.146 3.41144 4.99539 31.70 1482.93 1024.582 15.15 15.08 9.133 3.41113 4.99683 31.71 1482.90 1024.592 15.45 15.38 9.117 3.40935 4.99658 31.71 1482.84 1024.593 15.75 15.68 9.107 3.40808 4.99613 31.70 1482.81 1024.592 16.05 15.98 9.089 3.40594 4.99573 31.70 1482.73 1024.592 16.35 16.28 9.072 3.40501 4.99680 31.70 1482.68 1024.600 16.65 16.58 9.048 3.40413 4.99902 31.71 1482.61 1024.614 16.95 16.87 9.019 3.40263 5.00106 31.72 1482.52 1024.628 17.25 17.17 8.999 3.40165 5.00252 31.73 1482.47 1024.638 17.55 17.47 8.988 3.39983 5.00153 31.72 1482.42 1024.634 17.85 17.77 8.976 3.39888 5.00188 31.72 1482.38 1024.638 18.15 18.07 8.964 3.39973 5.00496 31.74 1482.36 1024.657 18.45 18.37 8.949 3.39886 5.00582 31.75 1482.32 1024.663 18.75 18.67 8.934 3.39830 5.00726 31.75 1482.27 1024.673 19.05 18.96 8.921 3.39737 5.00769 31.75 1482.24 1024.677 19.35 19.26 8.912 3.39675 5.00821 31.76 1482.21 1024.682 19.65 19.56 8.899 3.39562 5.00844 31.76 1482.16 1024.685 19.95 19.86 8.882 3.39463 5.00955 31.76 1482.11 1024.693 20.25 20.16 8.864 3.39413 5.01135 31.77 1482.06 1024.705 20.55 20.46 8.850 3.39393 5.01321 31.78 1482.03 1024.717 20.85 20.75 8.839 3.39192 5.01184 31.77 1481.98 1024.711 21.15 21.05 8.831 3.38988 5.01003 31.76 1481.94 1024.703 21.45 21.35 8.820 3.38999 5.01179 31.77 1481.91 1024.714 21.75 21.65 8.799 3.38914 5.01369 31.78 1481.85 1024.726 22.05 21.95 8.774 3.38961 5.01805 31.80 1481.80 1024.753 22.35 22.25 8.741 3.38879 5.02177 31.83 1481.70 1024.776 22.65 22.55 8.713 3.38529 5.02070 31.81 1481.59 1024.772 22.95 22.84 8.698 3.38279 5.01932 31.80 1481.52 1024.766 23.25 23.14 8.670 3.38081 5.02046 31.81 1481.43 1024.775 23.55 23.44 8.648 3.37995 5.02255 31.82 1481.36 1024.788 23.85 23.74 8.628 3.37973 5.02519 31.83 1481.31 1024.804 24.15 24.04 8.617 3.38034 5.02771 31.85 1481.30 1024.820 24.45 24.34 8.606 3.38043 5.02948 31.86 1481.27 1024.831 24.75 24.63 8.600 3.38072 5.03090 31.87 1481.27 1024.841 25.05 24.93 8.599 3.38020 5.03024 31.86 1481.26 1024.838 25.35 25.23 8.602 3.38118 5.03126 31.87 1481.29 1024.845 25.65 25.53 8.602 3.38066 5.03053 31.87 1481.28 1024.842 25.95 25.83 8.599 3.38039 5.03050 31.86 1481.28 1024.844 26.25 26.13 8.589 3.38069 5.03244 31.88 1481.26 1024.856 26.55 26.43 8.577 3.38080 5.03441 31.89 1481.23 1024.868 26.85 26.72 8.564 3.38044 5.03577 31.90 1481.20 1024.877 27.15 27.02 8.556 3.37956 5.03572 31.89 1481.17 1024.879 27.45 27.32 8.548 3.38035 5.03801 31.91 1481.17 1024.893 27.75 27.62 8.544 3.38014 5.03831 31.91 1481.16 1024.896 28.12 27.98 8.543 3.38051 5.03900 31.91 1481.17 1024.901