*2026/01/16 10:37:53.40 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/07 20:54:13.000 END TIME : UTC 2025/05/07 20:54:32.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 96 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 28.52 2 Depth metres 0.15 28.44 3 Temperature 'deg C (ITS90)' 9.444 14.73 4 Conductivity S/m 1.34084 3.4534 5 Conductance:Specific S/m 1.68743 4.9866 6 Salinity PSS-78 9.83 31.7 7 Speed:Sound m/s 1476.54 1489.14 8 Density kg/m^3 1006.704 1024.565 $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 : 129 LATITUDE : 49 3.41890 N ! (deg min) LONGITUDE : 124 50.53560 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250507_205413 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:29 96 96 MERGEHDR 1.3 2026/01/16 10:35:43 96 96 HDREDIT2 3.2 2026/01/16 10:36:14 ? ? REMOVECH 8.2 2026/01/16 10:36:40 96 96 CALIB 12.1 2026/01/16 10:37:16 96 96 CLEAN 5.3 2026/01/16 10:37:53 96 96 $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 14.730 1.34084 1.68743 9.83 1476.58 1006.704 0.45 0.46 14.713 1.34126 1.68868 9.84 1476.54 1006.714 0.75 0.76 14.718 1.34219 1.68963 9.85 1476.57 1006.719 1.05 1.06 14.707 1.34880 1.69846 9.90 1476.60 1006.765 1.35 1.37 14.694 1.36350 1.71751 10.02 1476.70 1006.860 1.65 1.67 14.672 1.37693 1.73542 10.14 1476.76 1006.952 1.95 1.97 14.655 1.40043 1.76578 10.33 1476.93 1007.103 2.25 2.28 14.636 1.42165 1.79337 10.50 1477.08 1007.242 2.55 2.58 14.548 1.44847 1.83127 10.74 1477.06 1007.441 2.85 2.89 14.437 1.48848 1.88717 11.10 1477.09 1007.733 3.15 3.19 14.058 1.57038 2.01031 11.87 1476.70 1008.395 3.45 3.49 12.769 2.23618 2.96035 18.05 1479.44 1013.357 3.75 3.79 12.427 2.78651 3.72257 23.18 1484.31 1017.378 4.05 4.09 12.132 3.29567 4.43774 28.12 1489.14 1021.248 4.35 4.39 11.532 3.35820 4.59620 29.18 1488.32 1022.175 4.65 4.69 10.841 3.37087 4.70250 29.85 1486.69 1022.821 4.95 4.99 10.478 3.37623 4.75822 30.21 1485.81 1023.156 5.25 5.29 10.277 3.37969 4.79025 30.41 1485.34 1023.348 5.55 5.59 10.117 3.38317 4.81707 30.58 1484.97 1023.508 5.85 5.89 10.018 3.38531 4.83374 30.68 1484.74 1023.607 6.15 6.18 9.951 3.38576 4.84352 30.74 1484.58 1023.666 6.45 6.48 9.898 3.38543 4.85048 30.79 1484.44 1023.709 6.75 6.78 9.839 3.38724 4.86121 30.85 1484.31 1023.773 7.05 7.08 9.804 3.38932 4.86909 30.90 1484.25 1023.820 7.35 7.38 9.781 3.39130 4.87520 30.94 1484.22 1023.856 7.65 7.68 9.761 3.39427 4.88237 30.99 1484.21 1023.898 7.95 7.98 9.748 3.39555 4.88593 31.02 1484.20 1023.919 8.25 8.28 9.731 3.39715 4.89064 31.05 1484.18 1023.948 8.55 8.57 9.722 3.39773 4.89283 31.06 1484.17 1023.961 8.85 8.87 9.707 3.39912 4.89687 31.09 1484.15 1023.986 9.15 9.17 9.693 3.40180 4.90265 31.13 1484.15 1024.020 9.45 9.47 9.682 3.40324 4.90634 31.15 1484.14 1024.042 9.75 9.77 9.675 3.40324 4.90732 31.16 1484.13 1024.049 10.05 10.07 9.668 3.40380 4.90910 31.17 1484.13 1024.060 10.35 10.37 9.666 3.40509 4.91123 31.18 1484.14 1024.073 10.65 10.66 9.666 3.40502 4.91112 31.18 1484.15 1024.074 10.95 10.96 9.665 3.40608 4.91282 31.19 1484.16 1024.085 11.25 11.26 9.661 3.40770 4.91580 31.21 1484.17 1024.103 11.55 11.56 9.653 3.40785 4.91707 31.22 1484.16 1024.111 11.85 11.86 9.646 3.40802 4.91837 31.23 1484.15 1024.120 12.15 12.16 9.641 3.40835 4.91959 31.24 1484.14 1024.128 12.45 12.46 9.638 3.41021 4.92261 31.26 1484.16 1024.146 12.75 12.76 9.635 3.41297 4.92699 31.29 1484.20 1024.172 13.05 13.05 9.631 3.41288 4.92752 31.29 1484.19 1024.176 13.35 13.35 9.628 3.41413 4.92967 31.31 1484.20 1024.190 13.65 13.65 9.624 3.41454 4.93088 31.31 1484.20 1024.198 13.95 13.95 9.625 3.41584 4.93261 31.33 1484.22 1024.209 14.25 14.25 9.622 3.41599 4.93329 31.33 1484.22 1024.214 14.55 14.55 9.610 3.41649 4.93570 31.34 1484.20 1024.229 14.85 14.85 9.601 3.41604 4.93633 31.35 1484.18 1024.234 15.15 15.14 9.591 3.41543 4.93685 31.35 1484.15 1024.239 15.45 15.44 9.579 3.41536 4.93851 31.36 1484.12 1024.250 15.75 15.74 9.562 3.41479 4.94009 31.37 1484.08 1024.261 16.05 16.04 9.550 3.41362 4.94006 31.37 1484.04 1024.263 16.35 16.34 9.535 3.41449 4.94354 31.39 1484.01 1024.284 16.65 16.64 9.521 3.41368 4.94431 31.39 1483.97 1024.290 16.95 16.94 9.501 3.41290 4.94604 31.40 1483.91 1024.302 17.25 17.23 9.487 3.41041 4.94456 31.39 1483.85 1024.296 17.55 17.53 9.476 3.40912 4.94422 31.39 1483.81 1024.296 17.85 17.83 9.460 3.40866 4.94585 31.39 1483.77 1024.307 18.15 18.13 9.449 3.40983 4.94916 31.42 1483.76 1024.327 18.45 18.43 9.444 3.41095 4.95144 31.43 1483.76 1024.341 18.75 18.73 9.445 3.41165 4.95232 31.44 1483.78 1024.347 19.05 19.03 9.453 3.41302 4.95313 31.44 1483.82 1024.352 19.35 19.32 9.460 3.41518 4.95530 31.46 1483.87 1024.365 19.65 19.62 9.465 3.41944 4.96078 31.50 1483.94 1024.396 19.95 19.92 9.465 3.42078 4.96266 31.51 1483.97 1024.408 20.25 20.22 9.469 3.42100 4.96246 31.51 1483.98 1024.408 20.55 20.52 9.475 3.42108 4.96165 31.51 1484.00 1024.404 20.85 20.82 9.475 3.42157 4.96242 31.51 1484.01 1024.410 21.15 21.11 9.472 3.42285 4.96463 31.53 1484.03 1024.423 21.45 21.41 9.472 3.42329 4.96525 31.53 1484.04 1024.428 21.75 21.71 9.472 3.42337 4.96546 31.53 1484.04 1024.431 22.05 22.01 9.472 3.42340 4.96552 31.53 1484.05 1024.432 22.35 22.31 9.473 3.42445 4.96690 31.54 1484.07 1024.441 22.65 22.61 9.474 3.42421 4.96643 31.54 1484.07 1024.440 22.95 22.91 9.475 3.42477 4.96704 31.54 1484.09 1024.444 23.25 23.20 9.481 3.42542 4.96715 31.55 1484.12 1024.446 23.55 23.50 9.486 3.42687 4.96845 31.56 1484.15 1024.454 23.85 23.80 9.490 3.42780 4.96926 31.56 1484.18 1024.459 24.15 24.10 9.495 3.43022 4.97201 31.58 1484.23 1024.475 24.45 24.40 9.504 3.43070 4.97149 31.58 1484.26 1024.474 24.75 24.70 9.511 3.43148 4.97156 31.58 1484.29 1024.475 25.05 25.00 9.520 3.43160 4.97040 31.57 1484.32 1024.469 25.35 25.29 9.528 3.43210 4.97000 31.57 1484.36 1024.468 25.65 25.59 9.530 3.43391 4.97231 31.59 1484.39 1024.482 25.95 25.89 9.530 3.43730 4.97725 31.62 1484.44 1024.510 26.25 26.19 9.548 3.43908 4.97729 31.62 1484.51 1024.511 26.55 26.49 9.559 3.43985 4.97685 31.62 1484.55 1024.509 26.85 26.79 9.564 3.44162 4.97866 31.64 1484.59 1024.520 27.15 27.09 9.569 3.44354 4.98062 31.65 1484.63 1024.532 27.45 27.38 9.584 3.44765 4.98446 31.68 1484.73 1024.553 27.75 27.68 9.606 3.45136 4.98660 31.70 1484.84 1024.565 28.05 27.98 9.620 3.45104 4.98414 31.68 1484.87 1024.552 28.35 28.28 9.629 3.45305 4.98578 31.69 1484.93 1024.562 28.52 28.44 9.632 3.45340 4.98589 31.70 1484.94 1024.563