*2026/01/16 10:37:53.83 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/08 21:11:57.000 END TIME : UTC 2025/05/08 21:12:22.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 126 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 37.75 2 Depth metres 0.15 37.58 3 Temperature 'deg C (ITS90)' 8.801 12.941 4 Conductivity S/m 3.18262 3.44178 5 Conductance:Specific S/m 4.19774 5.0623 6 Salinity PSS-78 26.51 32.11 7 Speed:Sound m/s 1482.08 1490.54 8 Density kg/m^3 1019.842 1025.061 $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 : 141 LATITUDE : 48 56.61820 N ! (deg min) LONGITUDE : 125 16.11920 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250508_211157 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:29 126 126 MERGEHDR 1.3 2026/01/16 10:35:44 126 126 HDREDIT2 3.2 2026/01/16 10:36:15 ? ? REMOVECH 8.2 2026/01/16 10:36:41 126 126 CALIB 12.1 2026/01/16 10:37:17 126 126 CLEAN 5.3 2026/01/16 10:37:53 126 126 $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 12.941 3.23417 4.26213 26.96 1490.48 1020.184 0.45 0.45 12.909 3.18262 4.19774 26.51 1489.85 1019.842 0.75 0.75 12.736 3.23384 4.28481 27.10 1489.96 1020.335 1.05 1.05 12.499 3.28366 4.37837 27.74 1489.91 1020.871 1.35 1.35 12.368 3.29061 4.40294 27.90 1489.65 1021.021 1.65 1.65 12.357 3.29667 4.41240 27.96 1489.69 1021.075 1.95 1.95 12.530 3.31225 4.41283 27.98 1490.32 1021.058 2.25 2.25 12.519 3.32696 4.43366 28.13 1490.46 1021.174 2.55 2.55 12.328 3.37737 4.52396 28.74 1490.54 1021.689 2.85 2.85 12.165 3.40489 4.58083 29.13 1490.44 1022.019 3.15 3.15 12.008 3.41488 4.61374 29.35 1490.16 1022.217 3.45 3.44 11.876 3.42812 4.64819 29.58 1489.98 1022.420 3.75 3.74 11.747 3.43668 4.67614 29.76 1489.76 1022.588 4.05 4.04 11.596 3.43485 4.69290 29.87 1489.36 1022.696 4.35 4.34 11.393 3.43721 4.72229 30.05 1488.87 1022.878 4.65 4.64 11.195 3.43440 4.74426 30.19 1488.34 1023.018 4.95 4.94 11.096 3.44178 4.76749 30.34 1488.18 1023.156 5.25 5.24 10.935 3.43846 4.78434 30.44 1487.73 1023.264 5.55 5.54 10.715 3.43302 4.80611 30.57 1487.11 1023.403 5.85 5.84 10.542 3.42576 4.81929 30.64 1486.59 1023.490 6.15 6.13 10.377 3.41486 4.82643 30.67 1486.03 1023.543 6.45 6.43 10.242 3.41077 4.83910 30.75 1485.64 1023.624 6.75 6.73 10.161 3.40644 4.84410 30.77 1485.38 1023.658 7.05 7.03 10.098 3.40332 4.84830 30.79 1485.19 1023.687 7.35 7.33 10.007 3.40250 4.85971 30.86 1484.95 1023.757 7.65 7.63 9.914 3.40121 4.87084 30.93 1484.69 1023.825 7.95 7.93 9.850 3.39989 4.87792 30.97 1484.52 1023.869 8.25 8.23 9.805 3.39854 4.88225 31.00 1484.39 1023.897 8.55 8.52 9.771 3.39739 4.88532 31.01 1484.29 1023.917 8.85 8.82 9.740 3.39617 4.88795 31.03 1484.20 1023.935 9.15 9.12 9.709 3.39494 4.89058 31.04 1484.11 1023.952 9.45 9.42 9.671 3.39314 4.89331 31.06 1483.99 1023.971 9.75 9.72 9.607 3.39217 4.90093 31.10 1483.82 1024.018 10.05 10.02 9.546 3.39061 4.90733 31.14 1483.64 1024.057 10.35 10.32 9.506 3.38734 4.90838 31.14 1483.50 1024.067 10.65 10.61 9.469 3.38438 4.90937 31.14 1483.37 1024.075 10.95 10.91 9.412 3.38431 4.91735 31.19 1483.23 1024.124 11.25 11.21 9.362 3.38443 4.92461 31.24 1483.10 1024.167 11.55 11.51 9.341 3.38486 4.92837 31.26 1483.06 1024.190 11.85 11.81 9.334 3.38418 4.92827 31.26 1483.04 1024.191 12.15 12.11 9.328 3.38456 4.92974 31.27 1483.03 1024.201 12.45 12.41 9.321 3.38458 4.93074 31.27 1483.02 1024.208 12.75 12.71 9.313 3.38566 4.93353 31.29 1483.01 1024.225 13.05 13.00 9.300 3.38786 4.93856 31.32 1483.01 1024.255 13.35 13.30 9.297 3.38897 4.94060 31.34 1483.02 1024.267 13.65 13.60 9.294 3.38937 4.94166 31.34 1483.03 1024.275 13.95 13.90 9.286 3.38880 4.94194 31.35 1483.00 1024.278 14.25 14.20 9.280 3.38986 4.94435 31.36 1483.00 1024.293 14.55 14.50 9.271 3.39084 4.94713 31.38 1483.00 1024.310 14.85 14.80 9.268 3.39108 4.94783 31.38 1483.00 1024.315 15.15 15.09 9.262 3.39169 4.94965 31.40 1482.99 1024.326 15.45 15.39 9.254 3.39193 4.95114 31.41 1482.98 1024.336 15.75 15.69 9.248 3.39213 4.95237 31.41 1482.97 1024.345 16.05 15.99 9.238 3.39212 4.95372 31.42 1482.95 1024.354 16.35 16.29 9.231 3.39254 4.95543 31.43 1482.94 1024.365 16.65 16.59 9.225 3.39273 4.95653 31.44 1482.93 1024.372 16.95 16.89 9.210 3.39355 4.95989 31.46 1482.91 1024.393 17.25 17.18 9.196 3.39278 4.96085 31.46 1482.87 1024.400 17.55 17.48 9.187 3.39282 4.96217 31.47 1482.85 1024.409 17.85 17.78 9.174 3.39398 4.96576 31.50 1482.84 1024.431 18.15 18.08 9.169 3.39390 4.96629 31.50 1482.83 1024.435 18.45 18.38 9.164 3.39508 4.96881 31.52 1482.83 1024.450 18.75 18.68 9.167 3.39504 4.96830 31.51 1482.84 1024.449 19.05 18.97 9.149 3.39423 4.96968 31.52 1482.79 1024.458 19.35 19.27 9.142 3.39489 4.97179 31.53 1482.79 1024.472 19.65 19.57 9.136 3.39505 4.97288 31.54 1482.78 1024.479 19.95 19.87 9.132 3.39611 4.97491 31.55 1482.79 1024.492 20.25 20.17 9.128 3.39598 4.97536 31.56 1482.78 1024.496 20.55 20.47 9.119 3.39547 4.97594 31.56 1482.75 1024.500 20.85 20.77 9.106 3.39554 4.97787 31.57 1482.73 1024.513 21.15 21.06 9.091 3.39569 4.98040 31.59 1482.69 1024.529 21.45 21.36 9.074 3.39466 4.98124 31.59 1482.64 1024.535 21.75 21.66 9.057 3.39409 4.98289 31.60 1482.59 1024.547 22.05 21.96 9.040 3.39256 4.98324 31.60 1482.53 1024.550 22.35 22.26 9.013 3.39141 4.98540 31.61 1482.45 1024.565 22.65 22.56 8.992 3.39125 4.98834 31.63 1482.40 1024.583 22.95 22.86 8.966 3.39053 4.99100 31.64 1482.33 1024.600 23.25 23.15 8.936 3.39018 4.99500 31.67 1482.25 1024.625 23.55 23.45 8.919 3.38960 4.99655 31.67 1482.20 1024.635 23.85 23.75 8.904 3.39084 5.00071 31.70 1482.18 1024.660 24.15 24.05 8.885 3.39124 5.00399 31.72 1482.14 1024.680 24.45 24.35 8.868 3.39283 5.00892 31.75 1482.12 1024.709 24.75 24.65 8.853 3.39299 5.01130 31.77 1482.09 1024.724 25.05 24.94 8.846 3.39292 5.01223 31.77 1482.08 1024.730 25.35 25.24 8.875 3.39812 5.01562 31.80 1482.22 1024.749 25.65 25.54 8.912 3.39410 5.00426 31.73 1482.27 1024.687 25.95 25.84 8.867 3.39326 5.00975 31.76 1482.15 1024.720 26.25 26.14 8.838 3.39368 5.01453 31.79 1482.08 1024.749 26.55 26.44 8.834 3.39587 5.01843 31.81 1482.11 1024.771 26.85 26.74 8.837 3.39869 5.02217 31.84 1482.15 1024.793 27.15 27.03 8.845 3.40042 5.02348 31.85 1482.20 1024.801 27.45 27.33 8.857 3.40432 5.02747 31.88 1482.29 1024.824 27.75 27.63 8.868 3.40550 5.02753 31.88 1482.34 1024.825 28.05 27.93 8.887 3.40719 5.02724 31.88 1482.41 1024.824 28.35 28.23 8.897 3.40944 5.02910 31.90 1482.47 1024.835 28.65 28.53 8.908 3.41122 5.03006 31.91 1482.53 1024.841 28.95 28.82 8.916 3.41174 5.02973 31.90 1482.56 1024.841 29.25 29.12 8.925 3.41170 5.02830 31.90 1482.59 1024.834 29.55 29.42 8.929 3.41251 5.02885 31.90 1482.62 1024.838 29.85 29.72 8.935 3.41348 5.02944 31.90 1482.65 1024.842 30.15 30.02 8.941 3.41412 5.02945 31.91 1482.68 1024.843 30.45 30.32 8.951 3.41532 5.02977 31.91 1482.72 1024.846 30.75 30.61 8.964 3.41616 5.02910 31.91 1482.77 1024.843 31.05 30.91 8.977 3.42019 5.03313 31.94 1482.86 1024.866 31.35 31.21 8.985 3.42258 5.03540 31.95 1482.92 1024.879 31.65 31.51 8.987 3.42364 5.03672 31.96 1482.94 1024.888 31.95 31.81 8.989 3.42339 5.03609 31.96 1482.95 1024.885 32.25 32.11 9.001 3.42358 5.03446 31.95 1482.99 1024.877 32.55 32.41 8.994 3.42344 5.03536 31.95 1482.97 1024.884 32.85 32.70 8.984 3.42384 5.03739 31.97 1482.96 1024.896 33.15 33.00 8.984 3.42411 5.03778 31.97 1482.96 1024.900 33.45 33.30 8.983 3.42375 5.03741 31.97 1482.96 1024.899 33.75 33.60 8.984 3.42301 5.03625 31.96 1482.96 1024.894 34.05 33.90 8.979 3.42087 5.03383 31.94 1482.92 1024.882 34.35 34.20 8.971 3.41994 5.03357 31.94 1482.90 1024.882 34.65 34.49 8.964 3.42069 5.03576 31.95 1482.89 1024.896 34.95 34.79 8.955 3.41948 5.03536 31.95 1482.86 1024.895 35.25 35.09 8.950 3.41840 5.03446 31.94 1482.83 1024.892 35.55 35.39 8.944 3.41822 5.03505 31.94 1482.82 1024.897 35.85 35.69 8.941 3.41791 5.03504 31.94 1482.82 1024.898 36.15 35.99 8.937 3.42015 5.03902 31.97 1482.84 1024.921 36.45 36.28 8.944 3.42062 5.03866 31.97 1482.87 1024.920 36.75 36.58 8.943 3.42093 5.03925 31.97 1482.87 1024.925 37.05 36.88 8.923 3.42210 5.04386 32.00 1482.84 1024.952 37.35 37.18 8.837 3.42166 5.05601 32.07 1482.62 1025.024 37.75 37.58 8.801 3.42224 5.06230 32.11 1482.53 1025.061