*2026/01/16 09:47:05.80 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/12/20 18:01:35.000 END TIME : UTC 2023/12/20 18:01:48.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 68 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.33 2 Depth metres 0.15 20.27 3 Temperature 'deg C (ITS90)' 8.32 11.096 4 Conductivity S/m 1.70856 3.51462 5 Conductance:Specific S/m 2.56386 4.86882 6 Salinity PSS-78 15.2 31.05 7 Speed:Sound m/s 1459.32 1489.28 8 Density kg/m^3 1011.737 1023.777 $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 : 110 LATITUDE : 50 35.79640 N ! (deg min) LONGITUDE : 127 42.37010 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231220_180135 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:53 68 68 MERGEHDR 1.3 2026/01/15 13:41:49 68 68 HDREDIT2 3.2 2026/01/15 14:00:58 ? ? REMOVECH 8.2 2026/01/15 14:01:18 68 68 CALIB 12.1 2026/01/16 09:46:11 68 68 CLEAN 5.3 2026/01/16 09:47:05 68 68 $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 09:46:11 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 8.320 1.70856 2.56386 15.20 1459.32 1011.737 0.45 0.45 8.321 1.71539 2.57402 15.27 1459.41 1011.789 0.75 0.76 8.331 1.72129 2.58209 15.32 1459.52 1011.831 1.05 1.06 8.363 1.75620 2.63198 15.64 1460.05 1012.082 1.35 1.36 8.643 2.06629 3.07094 18.53 1464.69 1014.304 1.65 1.66 8.770 2.28220 3.37908 20.58 1467.69 1015.891 1.95 1.96 9.215 2.61384 3.81975 23.59 1473.07 1018.178 2.25 2.26 9.442 2.84694 4.13291 25.75 1476.56 1019.831 2.55 2.56 9.612 2.94304 4.25145 26.58 1478.21 1020.457 2.85 2.86 9.788 3.04184 4.37192 27.43 1479.91 1021.096 3.15 3.16 9.924 3.07719 4.40551 27.68 1480.71 1021.270 3.45 3.46 9.977 3.09390 4.42271 27.80 1481.06 1021.360 3.75 3.76 10.031 3.11043 4.43958 27.93 1481.41 1021.449 4.05 4.06 10.126 3.14944 4.48300 28.24 1482.15 1021.679 4.35 4.36 10.188 3.18572 4.52669 28.55 1482.75 1021.913 4.65 4.66 10.255 3.20873 4.55073 28.73 1483.21 1022.040 4.95 4.96 10.305 3.22813 4.57179 28.88 1483.58 1022.152 5.25 5.25 10.357 3.24700 4.59170 29.02 1483.95 1022.257 5.55 5.55 10.421 3.27749 4.62646 29.27 1484.49 1022.443 5.85 5.85 10.464 3.29003 4.63849 29.36 1484.76 1022.507 6.15 6.15 10.527 3.32365 4.67761 29.64 1485.33 1022.717 6.45 6.45 10.576 3.34783 4.70517 29.84 1485.75 1022.865 6.75 6.75 10.617 3.35667 4.71211 29.90 1485.97 1022.901 7.05 7.05 10.646 3.36773 4.72385 29.98 1486.18 1022.964 7.35 7.35 10.669 3.37936 4.73711 30.08 1486.38 1023.036 7.65 7.65 10.687 3.38961 4.74908 30.16 1486.56 1023.101 7.95 7.95 10.701 3.39743 4.75823 30.23 1486.69 1023.152 8.25 8.24 10.716 3.40612 4.76831 30.30 1486.84 1023.207 8.55 8.54 10.724 3.40997 4.77263 30.33 1486.91 1023.231 8.85 8.84 10.738 3.41251 4.77431 30.35 1486.98 1023.240 9.15 9.14 10.757 3.41817 4.77973 30.39 1487.10 1023.270 9.45 9.44 10.764 3.42043 4.78192 30.40 1487.15 1023.283 9.75 9.74 10.794 3.42589 4.78561 30.43 1487.30 1023.302 10.05 10.04 10.825 3.43072 4.78821 30.45 1487.44 1023.315 10.35 10.34 10.841 3.43411 4.79078 30.47 1487.52 1023.329 10.65 10.63 10.853 3.43984 4.79714 30.52 1487.63 1023.364 10.95 10.93 10.861 3.44393 4.80181 30.55 1487.70 1023.390 11.25 11.23 10.869 3.44809 4.80645 30.59 1487.78 1023.416 11.55 11.53 10.876 3.45142 4.81017 30.61 1487.84 1023.437 11.85 11.83 10.881 3.45185 4.81008 30.61 1487.86 1023.438 12.15 12.13 10.889 3.45329 4.81113 30.62 1487.90 1023.444 12.45 12.43 10.892 3.45514 4.81323 30.64 1487.94 1023.456 12.75 12.73 10.904 3.45748 4.81485 30.65 1488.00 1023.466 13.05 13.03 10.914 3.45967 4.81667 30.66 1488.06 1023.476 13.35 13.32 10.933 3.46476 4.82108 30.70 1488.17 1023.500 13.65 13.62 10.946 3.46917 4.82548 30.73 1488.26 1023.524 13.95 13.92 10.956 3.47237 4.82865 30.75 1488.33 1023.542 14.25 14.22 10.961 3.47288 4.82868 30.75 1488.35 1023.543 14.55 14.52 10.968 3.47518 4.83097 30.77 1488.40 1023.556 14.85 14.82 10.972 3.47719 4.83320 30.79 1488.44 1023.569 15.15 15.12 10.977 3.47943 4.83564 30.80 1488.48 1023.584 15.45 15.42 10.973 3.48002 4.83694 30.81 1488.49 1023.592 15.75 15.71 10.967 3.48043 4.83838 30.82 1488.48 1023.602 16.05 16.01 10.958 3.47993 4.83894 30.83 1488.46 1023.607 16.35 16.31 10.952 3.47932 4.83889 30.82 1488.44 1023.609 16.65 16.61 10.952 3.48028 4.84022 30.83 1488.45 1023.617 16.95 16.91 10.949 3.48190 4.84279 30.85 1488.47 1023.633 17.25 17.21 10.953 3.48517 4.84684 30.88 1488.53 1023.656 17.55 17.51 10.959 3.48717 4.84880 30.89 1488.57 1023.668 17.85 17.80 10.966 3.48853 4.84972 30.90 1488.61 1023.673 18.15 18.10 10.969 3.48959 4.85083 30.91 1488.63 1023.680 18.45 18.40 10.974 3.49075 4.85182 30.92 1488.66 1023.687 18.75 18.70 10.982 3.49635 4.85845 30.97 1488.75 1023.724 19.05 19.00 11.002 3.50324 4.86538 31.02 1488.89 1023.762 19.35 19.30 11.030 3.50699 4.86679 31.03 1489.01 1023.768 19.65 19.60 11.073 3.51265 4.86882 31.05 1489.19 1023.777 19.95 19.90 11.096 3.51462 4.86840 31.05 1489.28 1023.774 20.33 20.27 11.093 3.51441 4.86854 31.05 1489.27 1023.776