*2026/01/16 10:37:53.23 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/29 21:40:48.000 END TIME : UTC 2025/04/29 21:41:06.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 95 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 28.33 2 Depth metres 0.15 28.23 3 Temperature 'deg C (ITS90)' 10.244 10.73 4 Conductivity S/m 3.18883 3.32977 5 Conductance:Specific S/m 4.46342 4.7239 6 Salinity PSS-78 28.17 29.93 7 Speed:Sound m/s 1484.07 1485.03 8 Density kg/m^3 1021.51 1023.085 $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 : 125 LATITUDE : 49 12.69220 N ! (deg min) LONGITUDE : 125 56.05100 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250429_214048 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:29 95 95 MERGEHDR 1.3 2026/01/16 10:35:43 95 95 HDREDIT2 3.2 2026/01/16 10:36:14 ? ? REMOVECH 8.2 2026/01/16 10:36:40 95 95 CALIB 12.1 2026/01/16 10:37:16 95 95 CLEAN 5.3 2026/01/16 10:37:53 95 95 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:14 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 10:36:40 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:16 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 10.730 3.20810 4.48942 28.35 1484.40 1021.650 0.45 0.45 10.722 3.18883 4.46342 28.17 1484.16 1021.510 0.75 0.75 10.648 3.19802 4.48556 28.32 1484.07 1021.638 1.05 1.05 10.545 3.23051 4.54421 28.71 1484.19 1021.966 1.35 1.35 10.514 3.24151 4.56372 28.85 1484.24 1022.076 1.65 1.65 10.516 3.24234 4.56464 28.85 1484.26 1022.082 1.95 1.95 10.513 3.24526 4.56911 28.88 1484.29 1022.108 2.25 2.24 10.498 3.25452 4.58411 28.99 1484.37 1022.192 2.55 2.54 10.479 3.25974 4.59392 29.05 1484.38 1022.249 2.85 2.84 10.468 3.26053 4.59639 29.07 1484.37 1022.264 3.15 3.14 10.460 3.26142 4.59870 29.09 1484.37 1022.279 3.45 3.44 10.450 3.26193 4.60075 29.10 1484.35 1022.292 3.75 3.74 10.446 3.26224 4.60172 29.10 1484.35 1022.299 4.05 4.04 10.442 3.26230 4.60227 29.11 1484.34 1022.303 4.35 4.34 10.434 3.26254 4.60374 29.12 1484.33 1022.313 4.65 4.64 10.426 3.26645 4.61022 29.16 1484.36 1022.350 4.95 4.94 10.420 3.26892 4.61457 29.19 1484.38 1022.376 5.25 5.24 10.412 3.26980 4.61679 29.21 1484.37 1022.390 5.55 5.54 10.407 3.27184 4.62027 29.23 1484.39 1022.410 5.85 5.83 10.403 3.27610 4.62692 29.28 1484.43 1022.448 6.15 6.13 10.395 3.27877 4.63173 29.31 1484.45 1022.477 6.45 6.43 10.388 3.28147 4.63636 29.34 1484.47 1022.503 6.75 6.73 10.383 3.28618 4.64376 29.39 1484.51 1022.546 7.05 7.03 10.376 3.28772 4.64678 29.41 1484.52 1022.564 7.35 7.33 10.373 3.28941 4.64965 29.43 1484.54 1022.581 7.65 7.63 10.371 3.28996 4.65064 29.44 1484.54 1022.588 7.95 7.93 10.369 3.29050 4.65164 29.44 1484.55 1022.595 8.25 8.23 10.367 3.29131 4.65306 29.45 1484.56 1022.604 8.55 8.53 10.366 3.29213 4.65440 29.46 1484.57 1022.613 8.85 8.82 10.365 3.29293 4.65561 29.47 1484.58 1022.620 9.15 9.12 10.364 3.29360 4.65668 29.48 1484.59 1022.628 9.45 9.42 10.363 3.29341 4.65657 29.48 1484.59 1022.628 9.75 9.72 10.362 3.29480 4.65874 29.49 1484.61 1022.642 10.05 10.02 10.360 3.29538 4.65979 29.50 1484.62 1022.649 10.35 10.32 10.359 3.29629 4.66119 29.51 1484.63 1022.658 10.65 10.62 10.358 3.29624 4.66126 29.51 1484.63 1022.659 10.95 10.92 10.357 3.29694 4.66231 29.52 1484.64 1022.667 11.25 11.22 10.357 3.29691 4.66235 29.52 1484.65 1022.668 11.55 11.52 10.356 3.29742 4.66313 29.52 1484.65 1022.674 11.85 11.82 10.355 3.29871 4.66507 29.54 1484.67 1022.686 12.15 12.11 10.355 3.29873 4.66520 29.54 1484.68 1022.688 12.45 12.41 10.354 3.29991 4.66700 29.55 1484.69 1022.699 12.75 12.71 10.352 3.30073 4.66842 29.56 1484.70 1022.708 13.05 13.01 10.349 3.30124 4.66945 29.56 1484.71 1022.715 13.35 13.31 10.348 3.30181 4.67050 29.57 1484.71 1022.722 13.65 13.61 10.346 3.30253 4.67168 29.58 1484.72 1022.730 13.95 13.91 10.346 3.30275 4.67207 29.58 1484.73 1022.733 14.25 14.21 10.345 3.30327 4.67292 29.59 1484.74 1022.739 14.55 14.51 10.344 3.30430 4.67448 29.60 1484.75 1022.749 14.85 14.81 10.343 3.30410 4.67439 29.60 1484.75 1022.750 15.15 15.10 10.341 3.30377 4.67406 29.60 1484.75 1022.750 15.45 15.40 10.339 3.30403 4.67473 29.60 1484.75 1022.755 15.75 15.70 10.338 3.30464 4.67576 29.61 1484.76 1022.762 16.05 16.00 10.337 3.30449 4.67567 29.61 1484.76 1022.763 16.35 16.30 10.335 3.30552 4.67742 29.62 1484.77 1022.774 16.65 16.60 10.333 3.30699 4.67977 29.63 1484.79 1022.788 16.95 16.90 10.331 3.30711 4.68015 29.64 1484.79 1022.791 17.25 17.20 10.330 3.30778 4.68132 29.64 1484.80 1022.799 17.55 17.50 10.330 3.30798 4.68160 29.65 1484.81 1022.802 17.85 17.80 10.328 3.30864 4.68276 29.65 1484.82 1022.810 18.15 18.09 10.326 3.30867 4.68306 29.66 1484.82 1022.813 18.45 18.39 10.324 3.30966 4.68469 29.67 1484.83 1022.823 18.75 18.69 10.320 3.31067 4.68665 29.68 1484.83 1022.835 19.05 18.99 10.314 3.31111 4.68810 29.69 1484.83 1022.845 19.35 19.29 10.308 3.31144 4.68937 29.70 1484.82 1022.854 19.65 19.59 10.304 3.31278 4.69174 29.71 1484.83 1022.868 19.95 19.89 10.303 3.31494 4.69492 29.74 1484.86 1022.887 20.25 20.19 10.298 3.31504 4.69578 29.74 1484.85 1022.893 20.55 20.49 10.293 3.31630 4.69830 29.76 1484.86 1022.909 20.85 20.79 10.288 3.31657 4.69932 29.76 1484.85 1022.916 21.15 21.08 10.286 3.31722 4.70050 29.77 1484.86 1022.924 21.45 21.38 10.285 3.31734 4.70085 29.77 1484.86 1022.927 21.75 21.68 10.282 3.31691 4.70058 29.77 1484.86 1022.927 22.05 21.98 10.280 3.31773 4.70197 29.78 1484.87 1022.936 22.35 22.28 10.279 3.31803 4.70257 29.79 1484.87 1022.940 22.65 22.58 10.279 3.31789 4.70240 29.78 1484.87 1022.941 22.95 22.88 10.279 3.31692 4.70102 29.77 1484.87 1022.935 23.25 23.18 10.278 3.31813 4.70287 29.79 1484.88 1022.946 23.55 23.48 10.277 3.31887 4.70403 29.79 1484.90 1022.954 23.85 23.77 10.275 3.31822 4.70332 29.79 1484.89 1022.951 24.15 24.07 10.275 3.31693 4.70148 29.78 1484.88 1022.943 24.45 24.37 10.276 3.31687 4.70130 29.78 1484.88 1022.943 24.75 24.67 10.276 3.31756 4.70235 29.78 1484.90 1022.950 25.05 24.97 10.271 3.32030 4.70680 29.81 1484.92 1022.976 25.35 25.27 10.269 3.31960 4.70612 29.81 1484.91 1022.973 25.65 25.57 10.269 3.32192 4.70941 29.83 1484.94 1022.993 25.95 25.87 10.266 3.32131 4.70888 29.83 1484.94 1022.991 26.25 26.17 10.265 3.32260 4.71091 29.84 1484.95 1023.004 26.55 26.47 10.264 3.32281 4.71132 29.84 1484.96 1023.007 26.85 26.76 10.262 3.32392 4.71315 29.86 1484.97 1023.019 27.15 27.06 10.260 3.32291 4.71195 29.85 1484.96 1023.013 27.45 27.36 10.260 3.32400 4.71360 29.86 1484.97 1023.024 27.75 27.66 10.258 3.32631 4.71704 29.88 1485.00 1023.044 28.05 27.96 10.252 3.32925 4.72208 29.92 1485.03 1023.073 28.33 28.23 10.244 3.32977 4.72390 29.93 1485.02 1023.085