*2026/01/16 10:37:57.34 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/26 18:27:38.000 END TIME : UTC 2025/06/26 18:27:57.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 97 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 28.8 2 Depth metres 0.15 28.68 3 Temperature 'deg C (ITS90)' 9.441 16.746 4 Conductivity S/m 3.4485 3.81197 5 Conductance:Specific S/m 4.37165 5.00709 6 Salinity PSS-78 27.96 31.82 7 Speed:Sound m/s 1484.39 1504.28 8 Density kg/m^3 1020.179 1024.688 $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 : 205 LATITUDE : 48 59.49200 N ! (deg min) LONGITUDE : 125 20.31260 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250626_182738 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:33 97 97 MERGEHDR 1.3 2026/01/16 10:35:47 97 97 HDREDIT2 3.2 2026/01/16 10:36:18 ? ? REMOVECH 8.2 2026/01/16 10:36:50 97 97 CALIB 12.1 2026/01/16 10:37:20 97 97 CLEAN 5.3 2026/01/16 10:37:57 97 97 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:18 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 10:36:50 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:20 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 16.746 3.64998 4.37165 27.96 1504.01 1020.179 0.45 0.45 16.645 3.64598 4.37745 28.00 1503.74 1020.230 0.75 0.75 16.531 3.66156 4.40826 28.21 1503.63 1020.420 1.05 1.05 16.390 3.70625 4.47728 28.69 1503.76 1020.823 1.35 1.35 16.285 3.77679 4.57401 29.38 1504.22 1021.372 1.65 1.65 16.281 3.78314 4.58219 29.44 1504.28 1021.419 1.95 1.95 16.212 3.78126 4.58753 29.47 1504.11 1021.461 2.25 2.25 16.193 3.78604 4.59550 29.53 1504.12 1021.510 2.55 2.55 16.074 3.80224 4.62851 29.75 1504.02 1021.713 2.85 2.85 15.869 3.81197 4.66359 29.99 1503.66 1021.943 3.15 3.14 15.636 3.80625 4.68330 30.12 1503.07 1022.092 3.45 3.44 15.290 3.79067 4.70428 30.25 1502.13 1022.266 3.75 3.74 14.861 3.75212 4.70653 30.24 1500.75 1022.349 4.05 4.04 14.421 3.70893 4.70425 30.19 1499.27 1022.405 4.35 4.34 14.166 3.68736 4.70736 30.19 1498.45 1022.461 4.65 4.64 13.762 3.68179 4.74917 30.46 1497.44 1022.750 4.95 4.94 13.360 3.65844 4.76861 30.56 1496.23 1022.912 5.25 5.24 13.123 3.64401 4.77931 30.62 1495.51 1023.003 5.55 5.54 12.912 3.63719 4.79687 30.73 1494.93 1023.127 5.85 5.84 12.814 3.63555 4.80721 30.79 1494.68 1023.197 6.15 6.13 12.710 3.63349 4.81762 30.86 1494.41 1023.268 6.45 6.43 12.567 3.62745 4.82794 30.92 1494.00 1023.343 6.75 6.73 12.411 3.62119 4.83978 30.99 1493.55 1023.428 7.05 7.03 12.294 3.61237 4.84310 31.00 1493.17 1023.460 7.35 7.33 12.181 3.60252 4.84460 31.00 1492.79 1023.482 7.65 7.63 12.062 3.59759 4.85346 31.05 1492.45 1023.545 7.95 7.93 11.959 3.59444 4.86274 31.10 1492.16 1023.609 8.25 8.23 11.872 3.59147 4.87022 31.15 1491.92 1023.660 8.55 8.53 11.796 3.58960 4.87766 31.19 1491.71 1023.710 8.85 8.82 11.703 3.58391 4.88229 31.22 1491.42 1023.746 9.15 9.12 11.625 3.57731 4.88365 31.22 1491.16 1023.763 9.45 9.42 11.545 3.57290 4.88838 31.24 1490.91 1023.798 9.75 9.72 11.457 3.56624 4.89107 31.25 1490.62 1023.823 10.05 10.02 11.394 3.55999 4.89089 31.24 1490.40 1023.829 10.35 10.32 11.330 3.55809 4.89691 31.28 1490.22 1023.869 10.65 10.62 11.276 3.55563 4.90081 31.30 1490.06 1023.897 10.95 10.91 11.214 3.55386 4.90674 31.34 1489.89 1023.936 11.25 11.21 11.129 3.55089 4.91422 31.38 1489.65 1023.987 11.55 11.51 11.082 3.54614 4.91400 31.37 1489.48 1023.991 11.85 11.81 11.032 3.54227 4.91543 31.38 1489.31 1024.004 12.15 12.11 10.989 3.53857 4.91616 31.38 1489.17 1024.013 12.45 12.41 10.932 3.53496 4.91890 31.39 1488.99 1024.034 12.75 12.71 10.875 3.53188 4.92253 31.41 1488.81 1024.061 13.05 13.01 10.837 3.52950 4.92436 31.42 1488.69 1024.075 13.35 13.30 10.798 3.52853 4.92838 31.44 1488.59 1024.102 13.65 13.60 10.764 3.52816 4.93261 31.47 1488.50 1024.129 13.95 13.90 10.704 3.52317 4.93384 31.47 1488.30 1024.142 14.25 14.20 10.663 3.51903 4.93369 31.46 1488.15 1024.145 14.55 14.50 10.622 3.51522 4.93399 31.46 1488.00 1024.151 14.85 14.80 10.570 3.51207 4.93683 31.47 1487.84 1024.172 15.15 15.10 10.532 3.51176 4.94163 31.50 1487.74 1024.203 15.45 15.39 10.490 3.51013 4.94523 31.52 1487.62 1024.227 15.75 15.69 10.452 3.50812 4.94766 31.54 1487.51 1024.245 16.05 15.99 10.429 3.50582 4.94764 31.53 1487.42 1024.248 16.35 16.29 10.402 3.50422 4.94915 31.54 1487.34 1024.259 16.65 16.59 10.356 3.50053 4.95043 31.54 1487.18 1024.271 16.95 16.89 10.309 3.49784 4.95324 31.56 1487.04 1024.291 17.25 17.19 10.274 3.49401 4.95267 31.55 1486.91 1024.292 17.55 17.48 10.244 3.49246 4.95474 31.56 1486.81 1024.306 17.85 17.78 10.201 3.49222 4.96045 31.59 1486.71 1024.342 18.15 18.08 10.167 3.48880 4.96040 31.59 1486.58 1024.345 18.45 18.38 10.142 3.48805 4.96276 31.60 1486.52 1024.361 18.75 18.68 10.124 3.48714 4.96411 31.61 1486.46 1024.371 19.05 18.98 10.099 3.48596 4.96594 31.62 1486.39 1024.384 19.35 19.28 10.074 3.48534 4.96855 31.63 1486.32 1024.402 19.65 19.57 10.055 3.48383 4.96907 31.64 1486.26 1024.407 19.95 19.87 10.035 3.48275 4.97044 31.64 1486.20 1024.417 20.25 20.17 10.017 3.48183 4.97161 31.65 1486.15 1024.426 20.55 20.47 9.999 3.47941 4.97068 31.64 1486.08 1024.423 20.85 20.77 9.981 3.47912 4.97283 31.65 1486.03 1024.438 21.15 21.07 9.953 3.47824 4.97560 31.67 1485.96 1024.456 21.45 21.37 9.920 3.47649 4.97779 31.68 1485.85 1024.471 21.75 21.66 9.895 3.47375 4.97743 31.67 1485.76 1024.472 22.05 21.96 9.870 3.47198 4.97843 31.68 1485.68 1024.480 22.35 22.26 9.836 3.47135 4.98238 31.70 1485.59 1024.505 22.65 22.56 9.799 3.47020 4.98612 31.72 1485.48 1024.530 22.95 22.86 9.774 3.46772 4.98612 31.72 1485.39 1024.532 23.25 23.16 9.751 3.46554 4.98629 31.72 1485.31 1024.536 23.55 23.45 9.726 3.46476 4.98867 31.73 1485.24 1024.552 23.85 23.75 9.696 3.46276 4.99010 31.74 1485.15 1024.563 24.15 24.05 9.673 3.46051 4.99022 31.73 1485.06 1024.566 24.45 24.35 9.646 3.45963 4.99281 31.75 1484.99 1024.583 24.75 24.65 9.620 3.45855 4.99501 31.76 1484.91 1024.598 25.05 24.95 9.593 3.45718 4.99690 31.77 1484.83 1024.611 25.35 25.25 9.559 3.45563 4.99957 31.78 1484.73 1024.629 25.65 25.54 9.557 3.45333 4.99655 31.76 1484.70 1024.614 25.95 25.84 9.562 3.45198 4.99395 31.74 1484.70 1024.600 26.25 26.14 9.536 3.45080 4.99593 31.75 1484.62 1024.614 26.55 26.44 9.510 3.45042 4.99923 31.77 1484.56 1024.635 26.85 26.74 9.491 3.45002 5.00136 31.79 1484.51 1024.649 27.15 27.04 9.486 3.45088 5.00336 31.80 1484.51 1024.661 27.45 27.34 9.477 3.45013 5.00355 31.80 1484.48 1024.664 27.75 27.63 9.470 3.44987 5.00417 31.80 1484.47 1024.669 28.05 27.93 9.464 3.44894 5.00369 31.80 1484.44 1024.668 28.35 28.23 9.455 3.45040 5.00709 31.82 1484.44 1024.688 28.65 28.53 9.446 3.44854 5.00566 31.81 1484.40 1024.682 28.80 28.68 9.441 3.44850 5.00640 31.81 1484.39 1024.687