*2026/01/16 10:37:58.14 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/22 17:03:06.000 END TIME : UTC 2025/07/22 17:03:26.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 103 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 30.64 2 Depth metres 0.15 30.48 3 Temperature 'deg C (ITS90)' 9.296 15.555 4 Conductivity S/m 3.46197 3.90544 5 Conductance:Specific S/m 4.79095 5.05334 6 Salinity PSS-78 30.71 32.13 7 Speed:Sound m/s 1484.14 1503.85 8 Density kg/m^3 1022.735 1024.96 $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 : 224 LATITUDE : 49 50.92660 N ! (deg min) LONGITUDE : 126 54.38890 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250722_170306 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:34 103 103 MERGEHDR 1.3 2026/01/16 10:35:48 103 103 HDREDIT2 3.2 2026/01/16 10:36:19 ? ? REMOVECH 8.2 2026/01/16 10:36:51 103 103 CALIB 12.1 2026/01/16 10:37:22 103 103 CLEAN 5.3 2026/01/16 10:37:58 103 103 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:19 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 10:36:51 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:22 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 15.555 3.90544 4.81501 31.06 1503.85 1022.819 0.45 0.45 15.459 3.88141 4.79668 30.92 1503.40 1022.735 0.75 0.75 15.360 3.89555 4.82607 31.13 1503.32 1022.915 1.05 1.05 15.295 3.89477 4.83276 31.17 1503.18 1022.964 1.35 1.35 15.221 3.88920 4.83481 31.18 1502.96 1022.988 1.65 1.64 15.159 3.89173 4.84542 31.25 1502.85 1023.058 1.95 1.94 15.106 3.88307 4.84106 31.22 1502.64 1023.044 2.25 2.24 14.991 3.88621 4.85888 31.34 1502.42 1023.162 2.55 2.54 14.818 3.87162 4.86171 31.34 1501.88 1023.206 2.85 2.84 14.558 3.85077 4.86721 31.36 1501.07 1023.278 3.15 3.14 13.821 3.79912 4.89310 31.49 1498.82 1023.529 3.45 3.44 13.165 3.65696 4.79095 30.71 1495.72 1023.054 3.75 3.74 12.575 3.61811 4.81448 30.82 1493.87 1023.257 4.05 4.03 11.981 3.60884 4.87925 31.22 1492.32 1023.681 4.35 4.33 11.699 3.60762 4.91517 31.45 1491.62 1023.909 4.65 4.63 11.599 3.60821 4.92933 31.54 1491.38 1023.999 4.95 4.93 11.515 3.60829 4.94078 31.61 1491.18 1024.071 5.25 5.23 11.432 3.60889 4.95294 31.69 1490.99 1024.147 5.55 5.53 11.348 3.59258 4.94191 31.60 1490.59 1024.096 5.85 5.83 11.193 3.57712 4.94175 31.58 1490.03 1024.110 6.15 6.13 11.002 3.56459 4.95053 31.62 1489.41 1024.176 6.45 6.42 10.877 3.55502 4.95444 31.64 1488.99 1024.210 6.75 6.72 10.751 3.55190 4.96759 31.72 1488.64 1024.294 7.05 7.02 10.576 3.53721 4.97133 31.72 1488.03 1024.329 7.35 7.32 10.421 3.52569 4.97688 31.74 1487.50 1024.373 7.65 7.62 10.339 3.52127 4.98218 31.77 1487.25 1024.409 7.95 7.92 10.273 3.51936 4.98874 31.81 1487.06 1024.451 8.25 8.22 10.220 3.51381 4.98834 31.80 1486.87 1024.454 8.55 8.51 10.172 3.51014 4.98995 31.80 1486.70 1024.468 8.85 8.81 10.129 3.50877 4.99413 31.83 1486.58 1024.495 9.15 9.11 10.102 3.50705 4.99554 31.83 1486.50 1024.506 9.45 9.41 10.066 3.50646 4.99974 31.86 1486.41 1024.532 9.75 9.71 10.024 3.50250 5.00018 31.86 1486.25 1024.539 10.05 10.01 9.998 3.50058 5.00110 31.86 1486.17 1024.547 10.35 10.30 9.976 3.49735 4.99963 31.85 1486.08 1024.542 10.65 10.60 9.942 3.49596 5.00250 31.86 1485.98 1024.561 10.95 10.90 9.903 3.49439 5.00590 31.88 1485.86 1024.583 11.25 11.20 9.861 3.49298 5.00985 31.90 1485.74 1024.609 11.55 11.50 9.827 3.49065 5.01137 31.91 1485.63 1024.620 11.85 11.80 9.790 3.48845 5.01356 31.92 1485.52 1024.636 12.15 12.10 9.764 3.48627 5.01421 31.92 1485.43 1024.642 12.45 12.39 9.746 3.48486 5.01474 31.92 1485.37 1024.648 12.75 12.69 9.730 3.48336 5.01491 31.92 1485.31 1024.651 13.05 12.99 9.699 3.47978 5.01429 31.91 1485.19 1024.650 13.35 13.29 9.665 3.47869 5.01755 31.93 1485.10 1024.672 13.65 13.59 9.641 3.47767 5.01954 31.94 1485.03 1024.685 13.95 13.89 9.626 3.47763 5.02165 31.95 1484.99 1024.699 14.25 14.18 9.618 3.47709 5.02206 31.96 1484.97 1024.703 14.55 14.48 9.610 3.47695 5.02310 31.96 1484.95 1024.710 14.85 14.78 9.605 3.47664 5.02330 31.96 1484.94 1024.713 15.15 15.08 9.601 3.47679 5.02405 31.97 1484.94 1024.719 15.45 15.38 9.597 3.47675 5.02460 31.97 1484.93 1024.723 15.75 15.68 9.589 3.47651 5.02550 31.98 1484.91 1024.730 16.05 15.97 9.578 3.47624 5.02665 31.98 1484.89 1024.738 16.35 16.27 9.567 3.47487 5.02622 31.98 1484.85 1024.737 16.65 16.57 9.553 3.47442 5.02764 31.98 1484.81 1024.747 16.95 16.87 9.531 3.47283 5.02850 31.99 1484.74 1024.755 17.25 17.17 9.510 3.47042 5.02812 31.98 1484.66 1024.755 17.55 17.47 9.486 3.47014 5.03125 32.00 1484.60 1024.775 17.85 17.77 9.458 3.46865 5.03314 32.01 1484.51 1024.788 18.15 18.06 9.437 3.46719 5.03408 32.01 1484.44 1024.795 18.45 18.36 9.425 3.46675 5.03523 32.02 1484.41 1024.803 18.75 18.66 9.419 3.46699 5.03649 32.03 1484.40 1024.812 19.05 18.96 9.410 3.46672 5.03732 32.03 1484.38 1024.818 19.35 19.26 9.400 3.46662 5.03876 32.04 1484.36 1024.828 19.65 19.56 9.392 3.46606 5.03912 32.04 1484.34 1024.832 19.95 19.85 9.383 3.46552 5.03958 32.04 1484.31 1024.836 20.25 20.15 9.375 3.46537 5.04060 32.05 1484.29 1024.843 20.55 20.45 9.368 3.46411 5.03969 32.04 1484.27 1024.840 20.85 20.75 9.361 3.46431 5.04101 32.05 1484.26 1024.849 21.15 21.05 9.357 3.46504 5.04263 32.06 1484.26 1024.859 21.45 21.35 9.348 3.46366 5.04196 32.06 1484.22 1024.857 21.75 21.64 9.345 3.46378 5.04264 32.06 1484.22 1024.862 22.05 21.94 9.342 3.46415 5.04366 32.07 1484.22 1024.869 22.35 22.24 9.339 3.46390 5.04364 32.07 1484.22 1024.871 22.65 22.54 9.335 3.46312 5.04312 32.06 1484.20 1024.869 22.95 22.84 9.330 3.46304 5.04374 32.07 1484.19 1024.874 23.25 23.14 9.324 3.46282 5.04430 32.07 1484.18 1024.879 23.55 23.43 9.321 3.46284 5.04478 32.07 1484.18 1024.883 23.85 23.73 9.315 3.46272 5.04552 32.08 1484.16 1024.889 24.15 24.03 9.309 3.46264 5.04629 32.08 1484.15 1024.894 24.45 24.33 9.304 3.46197 5.04595 32.08 1484.14 1024.894 24.75 24.63 9.303 3.46279 5.04735 32.09 1484.15 1024.903 25.05 24.93 9.303 3.46284 5.04744 32.09 1484.15 1024.905 25.35 25.22 9.303 3.46276 5.04738 32.09 1484.16 1024.906 25.65 25.52 9.302 3.46310 5.04789 32.09 1484.16 1024.910 25.95 25.82 9.301 3.46397 5.04944 32.10 1484.18 1024.920 26.25 26.12 9.300 3.46400 5.04955 32.10 1484.18 1024.922 26.55 26.42 9.299 3.46495 5.05106 32.11 1484.19 1024.931 26.85 26.72 9.299 3.46518 5.05148 32.11 1484.20 1024.935 27.15 27.01 9.299 3.46562 5.05213 32.12 1484.21 1024.940 27.45 27.31 9.299 3.46489 5.05096 32.11 1484.21 1024.934 27.75 27.61 9.303 3.46438 5.04972 32.10 1484.21 1024.929 28.05 27.91 9.302 3.46524 5.05109 32.11 1484.23 1024.938 28.35 28.21 9.303 3.46591 5.05189 32.12 1484.24 1024.943 28.65 28.51 9.302 3.46549 5.05147 32.11 1484.24 1024.942 28.95 28.80 9.299 3.46549 5.05181 32.12 1484.24 1024.945 29.25 29.10 9.300 3.46573 5.05213 32.12 1484.25 1024.948 29.55 29.40 9.299 3.46591 5.05252 32.12 1484.25 1024.952 29.85 29.70 9.296 3.46533 5.05212 32.12 1484.24 1024.951 30.15 30.00 9.296 3.46605 5.05314 32.12 1484.26 1024.958 30.45 30.30 9.301 3.46665 5.05334 32.13 1484.28 1024.960 30.64 30.48 9.303 3.46670 5.05301 32.12 1484.29 1024.959