*2026/01/16 10:37:49.91 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/03/11 21:34:33.000 END TIME : UTC 2025/03/11 21:34:46.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 70 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.72 2 Depth metres 0.15 20.7 3 Temperature 'deg C (ITS90)' 8.206 8.49 4 Conductivity S/m 2.53602 2.94 5 Conductance:Specific S/m 3.80519 4.39105 6 Salinity PSS-78 23.4 27.4 7 Speed:Sound m/s 1469.39 1475.26 8 Density kg/m^3 1018.139 1021.339 $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 : 81 LATITUDE : 49 16.45770 N ! (deg min) LONGITUDE : 125 52.80420 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250311_213433 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:26 70 70 MERGEHDR 1.3 2026/01/16 10:35:41 70 70 HDREDIT2 3.2 2026/01/16 10:36:11 ? ? REMOVECH 8.2 2026/01/16 10:36:38 70 70 CALIB 12.1 2026/01/16 10:37:13 70 70 CLEAN 5.3 2026/01/16 10:37:49 70 70 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:11 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 10:36:38 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:13 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 8.323 2.53602 3.80519 23.40 1469.39 1018.139 0.45 0.45 8.236 2.56482 3.85856 23.75 1469.49 1018.426 0.75 0.75 8.206 2.58711 3.89553 24.00 1469.69 1018.624 1.05 1.05 8.245 2.60931 3.92442 24.19 1470.08 1018.777 1.35 1.35 8.308 2.63218 3.95128 24.38 1470.57 1018.918 1.65 1.65 8.355 2.66748 3.99857 24.71 1471.16 1019.168 1.95 1.95 8.341 2.70565 4.05754 25.11 1471.60 1019.484 2.25 2.25 8.326 2.73369 4.10143 25.41 1471.91 1019.720 2.55 2.55 8.324 2.74533 4.11912 25.53 1472.05 1019.815 2.85 2.85 8.328 2.76621 4.14999 25.74 1472.33 1019.981 3.15 3.15 8.334 2.77596 4.16380 25.83 1472.48 1020.056 3.45 3.45 8.340 2.78079 4.17034 25.88 1472.56 1020.092 3.75 3.75 8.344 2.78688 4.17904 25.94 1472.65 1020.140 4.05 4.05 8.351 2.79082 4.18399 25.97 1472.73 1020.167 4.35 4.35 8.359 2.79793 4.19368 26.04 1472.85 1020.220 4.65 4.65 8.370 2.81071 4.21150 26.16 1473.04 1020.316 4.95 4.95 8.379 2.82190 4.22708 26.27 1473.22 1020.401 5.25 5.25 8.390 2.82998 4.23781 26.34 1473.36 1020.459 5.55 5.55 8.403 2.83509 4.24379 26.39 1473.46 1020.492 5.85 5.85 8.413 2.84210 4.25304 26.45 1473.58 1020.542 6.15 6.15 8.418 2.84551 4.25744 26.48 1473.65 1020.567 6.45 6.45 8.424 2.85199 4.26642 26.54 1473.75 1020.616 6.75 6.75 8.440 2.85554 4.26967 26.57 1473.85 1020.634 7.05 7.05 8.442 2.85857 4.27390 26.60 1473.90 1020.658 7.35 7.35 8.438 2.85922 4.27543 26.61 1473.90 1020.668 7.65 7.65 8.436 2.86035 4.27741 26.62 1473.91 1020.680 7.95 7.95 8.435 2.86123 4.27875 26.63 1473.93 1020.688 8.25 8.25 8.433 2.86365 4.28261 26.66 1473.96 1020.710 8.55 8.54 8.431 2.86535 4.28544 26.68 1473.98 1020.727 8.85 8.84 8.431 2.87027 4.29285 26.73 1474.04 1020.768 9.15 9.14 8.424 2.87467 4.30031 26.78 1474.08 1020.810 9.45 9.44 8.416 2.87521 4.30211 26.79 1474.07 1020.821 9.75 9.74 8.415 2.87568 4.30304 26.79 1474.08 1020.827 10.05 10.04 8.414 2.87906 4.30812 26.83 1474.12 1020.856 10.35 10.34 8.418 2.88198 4.31207 26.86 1474.17 1020.878 10.65 10.64 8.421 2.88339 4.31379 26.87 1474.21 1020.888 10.95 10.94 8.422 2.88430 4.31493 26.88 1474.23 1020.896 11.25 11.24 8.423 2.88481 4.31557 26.88 1474.24 1020.901 11.55 11.54 8.423 2.88544 4.31648 26.89 1474.25 1020.907 11.85 11.84 8.423 2.88679 4.31858 26.90 1474.27 1020.919 12.15 12.14 8.422 2.88882 4.32175 26.92 1474.30 1020.938 12.45 12.44 8.421 2.89024 4.32398 26.94 1474.32 1020.951 12.75 12.74 8.421 2.89327 4.32855 26.97 1474.36 1020.977 13.05 13.04 8.420 2.89614 4.33297 27.00 1474.40 1021.002 13.35 13.34 8.419 2.89715 4.33451 27.01 1474.42 1021.011 13.65 13.64 8.419 2.90301 4.34338 27.07 1474.50 1021.060 13.95 13.94 8.418 2.90654 4.34874 27.11 1474.54 1021.091 14.25 14.24 8.416 2.91226 4.35751 27.17 1474.62 1021.139 14.55 14.54 8.413 2.91315 4.35936 27.18 1474.62 1021.150 14.85 14.84 8.413 2.91454 4.36132 27.19 1474.65 1021.162 15.15 15.13 8.413 2.91907 4.36812 27.24 1474.71 1021.200 15.45 15.43 8.414 2.92198 4.37237 27.27 1474.75 1021.224 15.75 15.73 8.415 2.92360 4.37468 27.28 1474.78 1021.238 16.05 16.03 8.417 2.92467 4.37607 27.29 1474.80 1021.247 16.35 16.33 8.420 2.92700 4.37908 27.31 1474.85 1021.264 16.65 16.63 8.425 2.92950 4.38223 27.34 1474.90 1021.282 16.95 16.93 8.429 2.93117 4.38417 27.35 1474.93 1021.294 17.25 17.23 8.434 2.93095 4.38319 27.34 1474.95 1021.289 17.55 17.53 8.442 2.93393 4.38661 27.37 1475.01 1021.309 17.85 17.83 8.446 2.93600 4.38915 27.39 1475.06 1021.324 18.15 18.13 8.454 2.93723 4.38996 27.39 1475.10 1021.329 18.45 18.43 8.456 2.93808 4.39100 27.40 1475.12 1021.336 18.75 18.73 8.460 2.93842 4.39098 27.40 1475.14 1021.337 19.05 19.03 8.464 2.93880 4.39105 27.40 1475.16 1021.338 19.35 19.33 8.466 2.93897 4.39101 27.40 1475.18 1021.339 19.65 19.63 8.490 2.93970 4.38896 27.39 1475.26 1021.329 19.95 19.93 8.488 2.94000 4.38967 27.39 1475.26 1021.334 20.25 20.22 8.479 2.93791 4.38771 27.38 1475.21 1021.325 20.55 20.52 8.475 2.93827 4.38870 27.39 1475.21 1021.332 20.72 20.70 8.474 2.93818 4.38873 27.39 1475.21 1021.333