*2026/01/16 10:37:48.15 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/02/19 21:18:47.000 END TIME : UTC 2025/02/19 21:19:07.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 102 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 30.42 2 Depth metres 0.15 30.29 3 Temperature 'deg C (ITS90)' 8.249 9.561 4 Conductivity S/m 2.55583 3.44931 5 Conductance:Specific S/m 3.84341 4.99521 6 Salinity PSS-78 23.65 31.74 7 Speed:Sound m/s 1469.42 1484.74 8 Density kg/m^3 1018.344 1024.629 $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 : 54 LATITUDE : 49 38.95220 N ! (deg min) LONGITUDE : 126 26.20360 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250219_211847 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:25 102 102 MERGEHDR 1.3 2026/01/16 10:35:39 102 102 HDREDIT2 3.2 2026/01/16 10:36:10 ? ? REMOVECH 8.2 2026/01/16 10:36:37 102 102 CALIB 12.1 2026/01/16 10:37:11 102 102 CLEAN 5.3 2026/01/16 10:37:48 102 102 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:10 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 10:36:37 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:11 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 8.249 2.55583 3.84341 23.65 1469.42 1018.344 0.45 0.45 8.524 2.68697 4.00751 24.79 1471.88 1019.203 0.75 0.75 8.763 2.95346 4.37380 27.33 1475.91 1021.154 1.05 1.05 8.887 3.01555 4.44936 27.86 1477.04 1021.558 1.35 1.35 8.996 3.11507 4.58150 28.79 1478.59 1022.269 1.65 1.65 9.075 3.18707 4.67657 29.46 1479.71 1022.784 1.95 1.95 9.119 3.22752 4.72976 29.84 1480.35 1023.073 2.25 2.25 9.174 3.26530 4.77746 30.18 1480.97 1023.332 2.55 2.54 9.205 3.27364 4.78538 30.24 1481.16 1023.375 2.85 2.84 9.221 3.27537 4.78560 30.24 1481.23 1023.377 3.15 3.14 9.234 3.27585 4.78446 30.24 1481.28 1023.371 3.45 3.44 9.250 3.28479 4.79532 30.32 1481.44 1023.431 3.75 3.74 9.270 3.31583 4.83774 30.62 1481.88 1023.664 4.05 4.04 9.298 3.33689 4.86461 30.81 1482.23 1023.811 4.35 4.34 9.321 3.34325 4.87060 30.85 1482.37 1023.844 4.65 4.64 9.341 3.34533 4.87068 30.86 1482.46 1023.844 4.95 4.93 9.352 3.34680 4.87135 30.86 1482.51 1023.849 5.25 5.23 9.357 3.34753 4.87163 30.86 1482.54 1023.851 5.55 5.53 9.366 3.34916 4.87283 30.87 1482.58 1023.859 5.85 5.83 9.371 3.34938 4.87237 30.87 1482.60 1023.857 6.15 6.13 9.374 3.35025 4.87319 30.88 1482.63 1023.863 6.45 6.43 9.377 3.35029 4.87285 30.88 1482.64 1023.862 6.75 6.73 9.380 3.35120 4.87381 30.88 1482.66 1023.868 7.05 7.03 9.383 3.35180 4.87418 30.89 1482.68 1023.872 7.35 7.32 9.384 3.35286 4.87565 30.90 1482.70 1023.881 7.65 7.62 9.382 3.35309 4.87624 30.90 1482.71 1023.885 7.95 7.92 9.370 3.35440 4.87989 30.92 1482.70 1023.907 8.25 8.22 9.339 3.35564 4.88602 30.96 1482.64 1023.944 8.55 8.52 9.310 3.35697 4.89212 31.00 1482.58 1023.980 8.85 8.82 9.287 3.35802 4.89694 31.03 1482.54 1024.009 9.15 9.12 9.268 3.35833 4.90009 31.05 1482.50 1024.028 9.45 9.41 9.255 3.36230 4.90774 31.10 1482.52 1024.072 9.75 9.71 9.258 3.36570 4.91235 31.14 1482.57 1024.099 10.05 10.01 9.261 3.36669 4.91336 31.14 1482.60 1024.106 10.35 10.31 9.260 3.36649 4.91317 31.14 1482.60 1024.106 10.65 10.61 9.246 3.36527 4.91335 31.14 1482.55 1024.109 10.95 10.91 9.240 3.36428 4.91282 31.14 1482.53 1024.107 11.25 11.21 9.248 3.36719 4.91588 31.16 1482.59 1024.125 11.55 11.50 9.254 3.36872 4.91728 31.17 1482.63 1024.134 11.85 11.80 9.262 3.36907 4.91666 31.17 1482.66 1024.131 12.15 12.10 9.264 3.36891 4.91610 31.16 1482.67 1024.129 12.45 12.40 9.262 3.36935 4.91700 31.17 1482.67 1024.135 12.75 12.70 9.260 3.36954 4.91755 31.17 1482.67 1024.140 13.05 13.00 9.267 3.37112 4.91895 31.18 1482.71 1024.149 13.35 13.30 9.309 3.37665 4.92093 31.20 1482.90 1024.159 13.65 13.59 9.382 3.38758 4.92644 31.25 1483.23 1024.187 13.95 13.89 9.412 3.39707 4.93584 31.32 1483.44 1024.238 14.25 14.19 9.440 3.40177 4.93867 31.34 1483.57 1024.253 14.55 14.49 9.467 3.40640 4.94160 31.37 1483.70 1024.269 14.85 14.79 9.483 3.40861 4.94241 31.38 1483.78 1024.274 15.15 15.09 9.496 3.40930 4.94161 31.37 1483.83 1024.270 15.45 15.39 9.513 3.41011 4.94037 31.36 1483.88 1024.264 15.75 15.68 9.536 3.41439 4.94320 31.39 1484.00 1024.279 16.05 15.98 9.542 3.41795 4.94756 31.42 1484.07 1024.304 16.35 16.28 9.539 3.41946 4.95011 31.44 1484.08 1024.320 16.65 16.58 9.543 3.41841 4.94808 31.42 1484.09 1024.310 16.95 16.88 9.550 3.41838 4.94703 31.42 1484.11 1024.305 17.25 17.18 9.534 3.41719 4.94751 31.42 1484.06 1024.309 17.55 17.48 9.467 3.41235 4.95018 31.43 1483.83 1024.329 17.85 17.77 9.367 3.40444 4.95303 31.43 1483.47 1024.351 18.15 18.07 9.369 3.39975 4.94597 31.38 1483.42 1024.313 18.45 18.37 9.346 3.39443 4.94153 31.35 1483.30 1024.292 18.75 18.67 9.190 3.37326 4.93306 31.27 1482.63 1024.254 19.05 18.97 8.929 3.35544 4.94483 31.31 1481.72 1024.331 19.35 19.27 8.895 3.35370 4.94716 31.33 1481.62 1024.347 19.65 19.57 8.894 3.35422 4.94808 31.33 1481.62 1024.353 19.95 19.86 8.892 3.35388 4.94795 31.33 1481.62 1024.354 20.25 20.16 8.882 3.35389 4.94940 31.34 1481.60 1024.363 20.55 20.46 8.879 3.35323 4.94886 31.33 1481.59 1024.362 20.85 20.76 8.877 3.35375 4.94984 31.34 1481.59 1024.369 21.15 21.06 8.881 3.35405 4.94975 31.34 1481.61 1024.369 21.45 21.36 8.910 3.35700 4.94983 31.35 1481.73 1024.370 21.75 21.66 8.954 3.36254 4.95156 31.36 1481.92 1024.379 22.05 21.95 9.004 3.37399 4.96115 31.44 1482.20 1024.431 22.35 22.25 9.019 3.37831 4.96535 31.47 1482.30 1024.454 22.65 22.55 9.045 3.38074 4.96514 31.47 1482.41 1024.453 22.95 22.85 9.073 3.38253 4.96363 31.46 1482.51 1024.445 23.25 23.15 9.122 3.38655 4.96236 31.46 1482.69 1024.437 23.55 23.45 9.140 3.38932 4.96388 31.48 1482.78 1024.446 23.85 23.74 9.147 3.39155 4.96612 31.49 1482.83 1024.459 24.15 24.04 9.167 3.39355 4.96618 31.50 1482.91 1024.460 24.45 24.34 9.179 3.39434 4.96550 31.49 1482.96 1024.457 24.75 24.64 9.183 3.39398 4.96445 31.49 1482.97 1024.452 25.05 24.94 9.185 3.39412 4.96430 31.48 1482.98 1024.452 25.35 25.24 9.187 3.39450 4.96463 31.49 1482.99 1024.455 25.65 25.54 9.189 3.39531 4.96546 31.49 1483.02 1024.461 25.95 25.83 9.195 3.39557 4.96502 31.49 1483.04 1024.460 26.25 26.13 9.200 3.39615 4.96519 31.49 1483.06 1024.462 26.55 26.43 9.203 3.39675 4.96560 31.50 1483.08 1024.465 26.85 26.73 9.206 3.39719 4.96577 31.50 1483.10 1024.467 27.15 27.03 9.209 3.39936 4.96846 31.52 1483.14 1024.483 27.45 27.33 9.216 3.39921 4.96725 31.51 1483.16 1024.477 27.75 27.63 9.227 3.40046 4.96749 31.51 1483.21 1024.479 28.05 27.92 9.236 3.40684 4.97557 31.57 1483.32 1024.525 28.35 28.22 9.261 3.41269 4.98044 31.61 1483.47 1024.552 28.65 28.52 9.300 3.41579 4.97934 31.60 1483.61 1024.545 28.95 28.82 9.344 3.41967 4.97849 31.60 1483.78 1024.539 29.25 29.12 9.380 3.42298 4.97809 31.61 1483.92 1024.536 29.55 29.42 9.402 3.43249 4.98874 31.68 1484.10 1024.595 29.85 29.71 9.463 3.44303 4.99521 31.74 1484.40 1024.629 30.15 30.01 9.536 3.44613 4.98921 31.71 1484.63 1024.593 30.42 30.29 9.561 3.44931 4.99023 31.72 1484.74 1024.599