*2026/01/16 09:57:48.55 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/04/23 16:24:04.000 END TIME : UTC 2024/04/23 16:24:20.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 84 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 25.05 2 Depth metres 0.15 24.94 3 Temperature 'deg C (ITS90)' 9.629 11.083 4 Conductivity S/m 3.35669 3.46333 5 Conductance:Specific S/m 4.65377 5.00047 6 Salinity PSS-78 29.54 31.8 7 Speed:Sound m/s 1484.98 1487.18 8 Density kg/m^3 1022.517 1024.629 $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 : 2024-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 72 LATITUDE : 48 51.15510 N ! (deg min) LONGITUDE : 125 11.82830 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240423_162404 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 08:59:57 84 84 MERGEHDR 1.3 2026/01/16 09:53:49 84 84 HDREDIT2 3.2 2026/01/16 09:55:03 ? ? REMOVECH 8.2 2026/01/16 09:56:14 84 84 CALIB 12.1 2026/01/16 09:56:47 84 84 CLEAN 5.3 2026/01/16 09:57:48 84 84 $END $REMARKS -HEADER EDITS: 2026/01/16 09:55:03 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 09:56:14 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:56:47 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 09:57:46 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 11.083 3.36207 4.65876 29.57 1487.14 1022.541 0.45 0.45 11.064 3.35669 4.65377 29.54 1487.03 1022.517 0.75 0.75 11.048 3.35913 4.65928 29.57 1487.02 1022.550 1.05 1.05 11.027 3.35908 4.66185 29.59 1486.97 1022.567 1.35 1.35 11.001 3.36126 4.66831 29.63 1486.93 1022.606 1.65 1.64 10.984 3.36276 4.67251 29.66 1486.91 1022.632 1.95 1.94 10.958 3.36495 4.67896 29.70 1486.88 1022.671 2.25 2.24 10.934 3.37855 4.70107 29.86 1486.98 1022.795 2.55 2.54 10.907 3.37599 4.70107 29.85 1486.88 1022.798 2.85 2.84 10.890 3.37473 4.70143 29.85 1486.83 1022.803 3.15 3.14 10.876 3.39084 4.72577 30.02 1486.99 1022.939 3.45 3.44 10.857 3.40797 4.75217 30.21 1487.15 1023.086 3.75 3.74 10.828 3.41642 4.76777 30.31 1487.18 1023.176 4.05 4.04 10.789 3.41794 4.77514 30.36 1487.10 1023.221 4.35 4.34 10.776 3.41940 4.77893 30.39 1487.09 1023.244 4.65 4.63 10.760 3.42451 4.78819 30.45 1487.11 1023.297 4.95 4.93 10.748 3.42699 4.79325 30.48 1487.12 1023.327 5.25 5.23 10.735 3.43239 4.80258 30.55 1487.15 1023.381 5.55 5.53 10.724 3.43451 4.80697 30.58 1487.15 1023.407 5.85 5.83 10.715 3.43620 4.81060 30.60 1487.15 1023.429 6.15 6.13 10.690 3.43786 4.81625 30.64 1487.12 1023.463 6.45 6.43 10.648 3.44157 4.82719 30.71 1487.06 1023.528 6.75 6.73 10.609 3.44590 4.83855 30.79 1487.01 1023.595 7.05 7.02 10.571 3.44961 4.84886 30.86 1486.97 1023.655 7.35 7.32 10.469 3.45294 4.86753 30.97 1486.75 1023.767 7.65 7.62 10.403 3.45438 4.87860 31.04 1486.60 1023.834 7.95 7.92 10.360 3.45481 4.88513 31.09 1486.50 1023.874 8.25 8.22 10.311 3.45533 4.89275 31.13 1486.39 1023.921 8.55 8.52 10.298 3.45491 4.89398 31.14 1486.35 1023.930 8.85 8.82 10.275 3.45457 4.89658 31.16 1486.30 1023.947 9.15 9.12 10.251 3.45416 4.89935 31.17 1486.23 1023.966 9.45 9.41 10.228 3.45438 4.90287 31.19 1486.18 1023.988 9.75 9.71 10.204 3.45513 4.90732 31.22 1486.13 1024.015 10.05 10.01 10.186 3.45537 4.91017 31.24 1486.10 1024.033 10.35 10.31 10.167 3.45491 4.91215 31.25 1486.05 1024.047 10.65 10.61 10.150 3.45484 4.91438 31.27 1486.01 1024.062 10.95 10.91 10.138 3.45514 4.91649 31.28 1485.99 1024.075 11.25 11.21 10.126 3.45551 4.91874 31.29 1485.96 1024.090 11.55 11.50 10.115 3.45535 4.92000 31.30 1485.94 1024.099 11.85 11.80 10.108 3.45595 4.92184 31.31 1485.93 1024.110 12.15 12.10 10.100 3.45588 4.92294 31.32 1485.91 1024.118 12.45 12.40 10.086 3.45660 4.92589 31.34 1485.89 1024.137 12.75 12.70 10.077 3.45637 4.92680 31.34 1485.87 1024.144 13.05 13.00 10.064 3.45625 4.92853 31.35 1485.84 1024.155 13.35 13.30 10.055 3.45521 4.92827 31.35 1485.81 1024.156 13.65 13.60 10.045 3.45547 4.93006 31.36 1485.79 1024.168 13.95 13.89 10.034 3.45552 4.93172 31.37 1485.77 1024.179 14.25 14.19 10.020 3.45473 4.93253 31.38 1485.73 1024.185 14.55 14.49 9.989 3.45436 4.93630 31.40 1485.65 1024.209 14.85 14.79 9.953 3.45461 4.94181 31.43 1485.56 1024.243 15.15 15.09 9.941 3.45416 4.94279 31.44 1485.53 1024.251 15.45 15.39 9.916 3.45505 4.94773 31.47 1485.48 1024.281 15.75 15.69 9.887 3.45597 4.95303 31.50 1485.43 1024.313 16.05 15.98 9.881 3.45788 4.95669 31.53 1485.44 1024.335 16.35 16.28 9.884 3.45840 4.95694 31.53 1485.46 1024.337 16.65 16.58 9.890 3.45950 4.95777 31.54 1485.49 1024.343 16.95 16.88 9.876 3.46038 4.96094 31.56 1485.47 1024.362 17.25 17.18 9.856 3.46074 4.96433 31.58 1485.43 1024.383 17.55 17.48 9.853 3.46045 4.96433 31.58 1485.42 1024.385 17.85 17.78 9.822 3.45984 4.96786 31.60 1485.34 1024.407 18.15 18.07 9.806 3.45975 4.97010 31.61 1485.30 1024.422 18.45 18.37 9.779 3.46020 4.97451 31.64 1485.24 1024.449 18.75 18.67 9.754 3.46105 4.97935 31.67 1485.19 1024.479 19.05 18.97 9.740 3.46204 4.98285 31.69 1485.17 1024.500 19.35 19.27 9.727 3.46314 4.98619 31.71 1485.16 1024.520 19.65 19.57 9.720 3.46269 4.98660 31.72 1485.14 1024.524 19.95 19.86 9.712 3.46229 4.98717 31.72 1485.12 1024.529 20.25 20.16 9.702 3.46163 4.98765 31.72 1485.09 1024.534 20.55 20.46 9.687 3.46152 4.98958 31.73 1485.06 1024.547 20.85 20.76 9.676 3.46105 4.99059 31.74 1485.03 1024.554 21.15 21.06 9.675 3.46092 4.99058 31.74 1485.03 1024.555 21.45 21.36 9.672 3.46071 4.99068 31.74 1485.02 1024.557 21.75 21.66 9.663 3.46081 4.99209 31.75 1485.00 1024.567 22.05 21.95 9.655 3.46093 4.99341 31.75 1484.99 1024.576 22.35 22.25 9.655 3.46160 4.99439 31.76 1485.00 1024.582 22.65 22.55 9.651 3.46138 4.99458 31.76 1485.00 1024.585 22.95 22.85 9.645 3.46138 4.99546 31.77 1484.98 1024.591 23.25 23.15 9.641 3.46179 4.99660 31.77 1484.98 1024.599 23.55 23.45 9.638 3.46249 4.99805 31.78 1484.99 1024.609 23.85 23.75 9.636 3.46308 4.99920 31.79 1485.00 1024.616 24.15 24.04 9.635 3.46306 4.99939 31.79 1485.00 1024.619 24.45 24.34 9.630 3.46297 4.99996 31.80 1484.99 1024.623 24.75 24.64 9.629 3.46308 5.00024 31.80 1484.99 1024.626 25.05 24.94 9.630 3.46333 5.00047 31.80 1485.00 1024.629