*2026/01/16 10:37:53.53 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/08 00:00:33.000 END TIME : UTC 2025/05/08 00:00:52.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 99 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 29.66 2 Depth metres 0.15 29.56 3 Temperature 'deg C (ITS90)' 9.252 14.371 4 Conductivity S/m 2.61577 3.43652 5 Conductance:Specific S/m 3.32728 5.01448 6 Salinity PSS-78 20.59 31.85 7 Speed:Sound m/s 1483.22 1490.21 8 Density kg/m^3 1015.025 1024.745 $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 : 133 LATITUDE : 48 54.60590 N ! (deg min) LONGITUDE : 125 0.79490 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250508_000033 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:29 99 99 MERGEHDR 1.3 2026/01/16 10:35:43 99 99 HDREDIT2 3.2 2026/01/16 10:36:14 ? ? REMOVECH 8.2 2026/01/16 10:36:40 99 99 CALIB 12.1 2026/01/16 10:37:16 99 99 CLEAN 5.3 2026/01/16 10:37:53 99 99 $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 14.371 2.62169 3.32944 20.61 1487.89 1015.030 0.45 0.45 14.335 2.61756 3.32728 20.59 1487.75 1015.025 0.75 0.75 14.293 2.61577 3.32856 20.60 1487.62 1015.040 1.05 1.05 14.268 2.62434 3.34161 20.69 1487.65 1015.113 1.35 1.36 14.253 2.63180 3.35235 20.76 1487.69 1015.173 1.65 1.66 14.242 2.63341 3.35532 20.78 1487.68 1015.191 1.95 1.96 14.230 2.63566 3.35926 20.80 1487.67 1015.215 2.25 2.26 14.266 2.64234 3.36465 20.84 1487.84 1015.239 2.55 2.56 14.301 2.64618 3.36654 20.86 1487.98 1015.245 2.85 2.86 14.301 2.64985 3.37122 20.89 1488.02 1015.270 3.15 3.16 14.298 2.65048 3.37230 20.90 1488.03 1015.278 3.45 3.46 14.285 2.65373 3.37754 20.93 1488.03 1015.309 3.75 3.77 14.269 2.65434 3.37973 20.95 1487.99 1015.324 4.05 4.07 14.252 2.65762 3.38535 20.98 1487.99 1015.357 4.35 4.37 14.199 2.66769 3.40274 21.10 1487.95 1015.457 4.65 4.67 14.007 2.68149 3.43722 21.32 1487.57 1015.668 4.95 4.97 13.286 2.77195 3.62005 22.53 1486.54 1016.732 5.25 5.27 12.529 3.07590 4.09808 25.78 1487.76 1019.374 5.55 5.57 12.178 3.37781 4.54281 28.86 1490.21 1021.821 5.85 5.87 11.611 3.40335 4.64801 29.55 1489.06 1022.457 6.15 6.17 11.109 3.39694 4.70372 29.89 1487.71 1022.810 6.45 6.47 10.541 3.39216 4.77222 30.31 1486.19 1023.235 6.75 6.77 10.234 3.39054 4.81149 30.55 1485.38 1023.474 7.05 7.06 10.069 3.39165 4.83568 30.70 1484.97 1023.619 7.35 7.36 9.913 3.39451 4.86139 30.86 1484.60 1023.772 7.65 7.66 9.843 3.39699 4.87468 30.95 1484.46 1023.851 7.95 7.96 9.765 3.39873 4.88820 31.03 1484.28 1023.931 8.25 8.26 9.724 3.39836 4.89342 31.06 1484.17 1023.963 8.55 8.56 9.687 3.39993 4.90091 31.11 1484.10 1024.008 8.85 8.86 9.650 3.40171 4.90864 31.16 1484.03 1024.054 9.15 9.16 9.624 3.40321 4.91454 31.20 1483.99 1024.089 9.45 9.45 9.606 3.40370 4.91775 31.22 1483.95 1024.109 9.75 9.75 9.585 3.40390 4.92107 31.24 1483.90 1024.130 10.05 10.05 9.553 3.40383 4.92547 31.27 1483.83 1024.157 10.35 10.35 9.519 3.40442 4.93120 31.30 1483.75 1024.192 10.65 10.65 9.490 3.40269 4.93289 31.31 1483.66 1024.204 10.95 10.95 9.470 3.40048 4.93257 31.31 1483.58 1024.204 11.25 11.25 9.430 3.39794 4.93458 31.31 1483.45 1024.219 11.55 11.54 9.393 3.39824 4.94029 31.35 1483.36 1024.253 11.85 11.84 9.358 3.39792 4.94492 31.38 1483.27 1024.282 12.15 12.14 9.333 3.39914 4.95029 31.41 1483.23 1024.314 12.45 12.44 9.323 3.40011 4.95307 31.43 1483.22 1024.331 12.75 12.74 9.323 3.40357 4.95819 31.47 1483.26 1024.360 13.05 13.04 9.327 3.40558 4.96046 31.48 1483.31 1024.374 13.35 13.34 9.333 3.40876 4.96430 31.51 1483.36 1024.396 13.65 13.63 9.336 3.41132 4.96755 31.53 1483.41 1024.415 13.95 13.93 9.344 3.41381 4.97007 31.55 1483.47 1024.430 14.25 14.23 9.351 3.41561 4.97163 31.56 1483.51 1024.439 14.55 14.53 9.361 3.41947 4.97573 31.59 1483.59 1024.462 14.85 14.83 9.374 3.42138 4.97676 31.60 1483.65 1024.469 15.15 15.13 9.385 3.42563 4.98129 31.64 1483.74 1024.494 15.45 15.43 9.395 3.42632 4.98091 31.63 1483.78 1024.493 15.75 15.72 9.395 3.42639 4.98097 31.63 1483.79 1024.495 16.05 16.02 9.392 3.42692 4.98217 31.64 1483.79 1024.503 16.35 16.32 9.390 3.42859 4.98490 31.66 1483.81 1024.519 16.65 16.62 9.389 3.43010 4.98727 31.68 1483.83 1024.533 16.95 16.92 9.391 3.42971 4.98632 31.67 1483.84 1024.529 17.25 17.22 9.389 3.43022 4.98737 31.68 1483.84 1024.536 17.55 17.51 9.385 3.43022 4.98794 31.68 1483.84 1024.541 17.85 17.81 9.383 3.43093 4.98924 31.69 1483.85 1024.550 18.15 18.11 9.384 3.43126 4.98961 31.69 1483.86 1024.553 18.45 18.41 9.385 3.43131 4.98961 31.69 1483.86 1024.554 18.75 18.71 9.386 3.43268 4.99142 31.71 1483.89 1024.565 19.05 19.01 9.386 3.43284 4.99158 31.71 1483.90 1024.567 19.35 19.31 9.388 3.43317 4.99181 31.71 1483.91 1024.570 19.65 19.60 9.389 3.43450 4.99361 31.72 1483.93 1024.581 19.95 19.90 9.390 3.43417 4.99292 31.72 1483.94 1024.578 20.25 20.20 9.387 3.43505 4.99473 31.73 1483.94 1024.590 20.55 20.50 9.382 3.43571 4.99643 31.74 1483.94 1024.601 20.85 20.80 9.375 3.43652 4.99852 31.75 1483.94 1024.614 21.15 21.10 9.370 3.43634 4.99907 31.76 1483.93 1024.618 21.45 21.40 9.366 3.43568 4.99870 31.75 1483.92 1024.618 21.75 21.69 9.358 3.43530 4.99928 31.76 1483.90 1024.623 22.05 21.99 9.348 3.43490 5.00013 31.76 1483.87 1024.629 22.35 22.29 9.338 3.43436 5.00078 31.76 1483.84 1024.634 22.65 22.59 9.330 3.43505 5.00305 31.78 1483.83 1024.649 22.95 22.89 9.321 3.43378 5.00243 31.77 1483.80 1024.647 23.25 23.19 9.315 3.43414 5.00391 31.78 1483.79 1024.657 23.55 23.48 9.307 3.43420 5.00515 31.79 1483.78 1024.665 23.85 23.78 9.299 3.43413 5.00612 31.80 1483.76 1024.672 24.15 24.08 9.293 3.43401 5.00680 31.80 1483.75 1024.677 24.45 24.38 9.292 3.43430 5.00744 31.80 1483.76 1024.682 24.75 24.68 9.289 3.43509 5.00896 31.81 1483.76 1024.692 25.05 24.98 9.284 3.43487 5.00939 31.82 1483.75 1024.696 25.35 25.28 9.279 3.43447 5.00958 31.82 1483.74 1024.698 25.65 25.57 9.276 3.43420 5.00964 31.82 1483.73 1024.700 25.95 25.87 9.272 3.43404 5.00994 31.82 1483.73 1024.703 26.25 26.17 9.270 3.43462 5.01115 31.83 1483.73 1024.711 26.55 26.47 9.269 3.43361 5.00984 31.82 1483.72 1024.705 26.85 26.77 9.272 3.43449 5.01060 31.82 1483.75 1024.711 27.15 27.07 9.276 3.43500 5.01083 31.82 1483.77 1024.713 27.45 27.36 9.274 3.43498 5.01110 31.83 1483.76 1024.716 27.75 27.66 9.273 3.43557 5.01205 31.83 1483.78 1024.722 28.05 27.96 9.270 3.43526 5.01209 31.83 1483.77 1024.724 28.35 28.26 9.268 3.43525 5.01229 31.83 1483.77 1024.727 28.65 28.56 9.271 3.43552 5.01229 31.83 1483.78 1024.728 28.95 28.86 9.267 3.43493 5.01199 31.83 1483.77 1024.728 29.25 29.15 9.256 3.43551 5.01448 31.85 1483.75 1024.743 29.66 29.56 9.252 3.43511 5.01444 31.84 1483.75 1024.745