*2026/01/16 10:37:57.15 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/26 15:34:15.000 END TIME : UTC 2025/06/26 15:34:29.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 72 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 21.52 2 Depth metres 0.15 21.44 3 Temperature 'deg C (ITS90)' 9.878 14.283 4 Conductivity S/m 3.45354 3.68537 5 Conductance:Specific S/m 4.68689 4.95538 6 Salinity PSS-78 30 31.52 7 Speed:Sound m/s 1485.5 1498.64 8 Density kg/m^3 1022.335 1024.351 $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 : 200 LATITUDE : 48 52.56660 N ! (deg min) LONGITUDE : 125 17.40020 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250626_153415 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:33 72 72 MERGEHDR 1.3 2026/01/16 10:35:47 72 72 HDREDIT2 3.2 2026/01/16 10:36:18 ? ? REMOVECH 8.2 2026/01/16 10:36:50 72 72 CALIB 12.1 2026/01/16 10:37:20 72 72 CLEAN 5.3 2026/01/16 10:37:57 72 72 $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 14.283 3.68537 4.69076 30.08 1498.64 1022.335 0.45 0.45 14.077 3.66746 4.69263 30.08 1497.96 1022.377 0.75 0.75 13.874 3.64957 4.69413 30.08 1497.30 1022.415 1.05 1.05 13.756 3.63635 4.69128 30.05 1496.88 1022.417 1.35 1.35 13.604 3.61866 4.68689 30.00 1496.33 1022.415 1.65 1.65 13.424 3.60843 4.69549 30.05 1495.79 1022.488 1.95 1.94 13.349 3.61312 4.71088 30.15 1495.66 1022.583 2.25 2.24 13.279 3.62266 4.73188 30.30 1495.60 1022.709 2.55 2.54 13.233 3.62903 4.74590 30.39 1495.57 1022.793 2.85 2.84 13.174 3.63672 4.76337 30.51 1495.51 1022.898 3.15 3.14 13.060 3.63568 4.77625 30.59 1495.23 1022.985 3.45 3.44 12.945 3.61875 4.76844 30.53 1494.77 1022.958 3.75 3.74 12.865 3.61057 4.76767 30.52 1494.49 1022.965 4.05 4.04 12.814 3.60881 4.77182 30.54 1494.35 1022.995 4.35 4.34 12.749 3.60831 4.77933 30.59 1494.19 1023.045 4.65 4.63 12.656 3.60310 4.78428 30.61 1493.91 1023.085 4.95 4.93 12.577 3.59873 4.78851 30.64 1493.68 1023.119 5.25 5.23 12.525 3.59596 4.79138 30.65 1493.52 1023.142 5.55 5.53 12.464 3.59439 4.79711 30.69 1493.36 1023.182 5.85 5.83 12.378 3.59110 4.80373 30.73 1493.12 1023.229 6.15 6.13 12.260 3.58545 4.81143 30.77 1492.77 1023.286 6.45 6.43 12.153 3.57249 4.80774 30.73 1492.37 1023.279 6.75 6.73 12.042 3.56583 4.81324 30.76 1492.02 1023.322 7.05 7.03 11.944 3.55698 4.81400 30.76 1491.68 1023.338 7.35 7.32 11.836 3.55120 4.82023 30.79 1491.35 1023.385 7.65 7.62 11.733 3.54220 4.82157 30.79 1491.00 1023.404 7.95 7.92 11.629 3.53570 4.82630 30.81 1490.67 1023.442 8.25 8.22 11.548 3.53295 4.83334 30.85 1490.44 1023.490 8.55 8.52 11.496 3.52984 4.83592 30.87 1490.28 1023.510 8.85 8.82 11.446 3.52924 4.84174 30.90 1490.15 1023.548 9.15 9.12 11.397 3.52873 4.84754 30.94 1490.03 1023.586 9.45 9.42 11.365 3.53086 4.85479 30.98 1489.97 1023.630 9.75 9.72 11.346 3.53119 4.85774 31.00 1489.94 1023.649 10.05 10.01 11.336 3.53226 4.86061 31.02 1489.93 1023.667 10.35 10.31 11.329 3.53232 4.86153 31.03 1489.92 1023.674 10.65 10.61 11.324 3.53217 4.86199 31.03 1489.91 1023.679 10.95 10.91 11.315 3.53186 4.86284 31.04 1489.89 1023.685 11.25 11.21 11.301 3.53241 4.86540 31.05 1489.86 1023.702 11.55 11.51 11.277 3.53151 4.86736 31.06 1489.80 1023.716 11.85 11.81 11.208 3.53124 4.87627 31.12 1489.63 1023.773 12.15 12.11 11.145 3.52288 4.87324 31.09 1489.37 1023.763 12.45 12.40 11.090 3.51379 4.86812 31.05 1489.13 1023.741 12.75 12.70 11.009 3.51137 4.87575 31.09 1488.90 1023.791 13.05 13.00 10.945 3.51077 4.88349 31.14 1488.74 1023.841 13.35 13.30 10.923 3.51090 4.88668 31.16 1488.69 1023.861 13.65 13.60 10.911 3.51086 4.88825 31.17 1488.67 1023.872 13.95 13.90 10.904 3.51073 4.88906 31.17 1488.65 1023.879 14.25 14.20 10.897 3.51121 4.89072 31.19 1488.64 1023.890 14.55 14.49 10.885 3.51043 4.89121 31.19 1488.61 1023.895 14.85 14.79 10.868 3.51018 4.89325 31.20 1488.57 1023.909 15.15 15.09 10.845 3.50866 4.89424 31.20 1488.50 1023.917 15.45 15.39 10.818 3.50623 4.89456 31.20 1488.40 1023.922 15.75 15.69 10.799 3.50576 4.89650 31.21 1488.35 1023.936 16.05 15.99 10.761 3.50501 4.90066 31.24 1488.25 1023.963 16.35 16.29 10.677 3.49861 4.90319 31.25 1487.97 1023.985 16.65 16.59 10.579 3.48666 4.89995 31.21 1487.58 1023.976 16.95 16.88 10.478 3.48270 4.90819 31.26 1487.28 1024.031 17.25 17.18 10.414 3.47822 4.91087 31.27 1487.07 1024.051 17.55 17.48 10.327 3.47285 4.91535 31.29 1486.79 1024.084 17.85 17.78 10.240 3.46994 4.92326 31.34 1486.54 1024.135 18.15 18.08 10.197 3.46850 4.92723 31.36 1486.41 1024.161 18.45 18.38 10.146 3.46782 4.93346 31.40 1486.28 1024.200 18.75 18.68 10.077 3.46406 4.93781 31.42 1486.06 1024.230 19.05 18.97 10.026 3.45843 4.93693 31.41 1485.87 1024.229 19.35 19.27 10.012 3.45806 4.93835 31.41 1485.83 1024.239 19.65 19.57 9.998 3.45693 4.93877 31.41 1485.79 1024.244 19.95 19.87 9.971 3.45692 4.94253 31.44 1485.72 1024.268 20.25 20.17 9.956 3.45632 4.94384 31.44 1485.68 1024.277 20.55 20.47 9.938 3.45500 4.94454 31.45 1485.62 1024.283 20.85 20.77 9.916 3.45512 4.94779 31.47 1485.57 1024.304 21.15 21.06 9.898 3.45354 4.94807 31.47 1485.51 1024.308 21.52 21.44 9.878 3.45670 4.95538 31.52 1485.50 1024.351