*2026/01/16 10:37:56.47 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/24 20:50:24.000 END TIME : UTC 2025/06/24 20:50:37.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 68 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.11 2 Depth metres 0.15 20.06 3 Temperature 'deg C (ITS90)' 12.899 14.302 4 Conductivity S/m 3.46117 3.52306 5 Conductance:Specific S/m 4.47894 4.59799 6 Salinity PSS-78 28.58 29.31 7 Speed:Sound m/s 1493.19 1496.96 8 Density kg/m^3 1021.177 1022.098 $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 : 187 LATITUDE : 49 16.70220 N ! (deg min) LONGITUDE : 125 52.95810 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250624_205024 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:32 68 68 MERGEHDR 1.3 2026/01/16 10:35:46 68 68 HDREDIT2 3.2 2026/01/16 10:36:17 ? ? REMOVECH 8.2 2026/01/16 10:36:47 68 68 CALIB 12.1 2026/01/16 10:37:19 68 68 CLEAN 5.3 2026/01/16 10:37:56 68 68 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:17 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 10:36:47 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:19 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 14.274 3.52118 4.48284 28.61 1496.88 1021.199 0.45 0.45 14.291 3.52306 4.48334 28.61 1496.95 1021.200 0.75 0.75 14.298 3.52226 4.48147 28.60 1496.96 1021.190 1.05 1.05 14.302 3.52059 4.47894 28.58 1496.96 1021.177 1.35 1.35 14.280 3.52014 4.48078 28.59 1496.91 1021.192 1.65 1.65 14.211 3.51844 4.48655 28.63 1496.73 1021.235 1.95 1.95 14.087 3.51285 4.49359 28.67 1496.37 1021.292 2.25 2.25 13.914 3.49977 4.49684 28.68 1495.81 1021.336 2.55 2.55 13.786 3.48143 4.48804 28.61 1495.31 1021.308 2.85 2.84 13.668 3.47856 4.49796 28.67 1495.00 1021.379 3.15 3.14 13.617 3.47857 4.50396 28.71 1494.88 1021.420 3.45 3.44 13.564 3.47782 4.50915 28.74 1494.74 1021.457 3.75 3.74 13.487 3.47808 4.51854 28.80 1494.56 1021.520 4.05 4.04 13.439 3.47719 4.52294 28.83 1494.44 1021.552 4.35 4.34 13.393 3.47612 4.52698 28.85 1494.32 1021.581 4.65 4.64 13.353 3.47507 4.53037 28.87 1494.21 1021.606 4.95 4.94 13.302 3.47345 4.53427 28.90 1494.07 1021.635 5.25 5.24 13.246 3.47065 4.53731 28.91 1493.91 1021.661 5.55 5.54 13.194 3.46928 4.54171 28.94 1493.77 1021.693 5.85 5.84 13.152 3.46685 4.54344 28.95 1493.65 1021.709 6.15 6.14 13.125 3.46536 4.54474 28.96 1493.57 1021.721 6.45 6.44 13.098 3.46572 4.54841 28.98 1493.51 1021.745 6.75 6.74 13.072 3.46411 4.54940 28.98 1493.43 1021.755 7.05 7.04 13.048 3.46328 4.55124 29.00 1493.37 1021.770 7.35 7.33 13.024 3.46117 4.55135 28.99 1493.29 1021.775 7.65 7.63 13.004 3.46150 4.55412 29.01 1493.25 1021.794 7.95 7.93 12.989 3.46236 4.55703 29.03 1493.23 1021.813 8.25 8.23 12.978 3.46198 4.55790 29.04 1493.20 1021.820 8.55 8.53 12.970 3.46345 4.56071 29.06 1493.20 1021.838 8.85 8.83 12.964 3.46376 4.56190 29.06 1493.19 1021.846 9.15 9.13 12.961 3.46465 4.56343 29.07 1493.20 1021.856 9.45 9.43 12.958 3.46532 4.56472 29.08 1493.20 1021.865 9.75 9.73 12.957 3.46662 4.56653 29.10 1493.22 1021.876 10.05 10.03 12.955 3.46838 4.56902 29.11 1493.24 1021.891 10.35 10.33 12.954 3.46812 4.56888 29.11 1493.24 1021.892 10.65 10.63 12.953 3.46878 4.56982 29.12 1493.25 1021.898 10.95 10.93 12.953 3.46836 4.56928 29.11 1493.25 1021.897 11.25 11.23 12.952 3.46962 4.57112 29.13 1493.27 1021.908 11.55 11.52 12.951 3.46903 4.57038 29.12 1493.26 1021.906 11.85 11.82 12.948 3.47011 4.57213 29.13 1493.27 1021.917 12.15 12.12 12.948 3.47025 4.57239 29.14 1493.28 1021.920 12.45 12.42 12.946 3.47070 4.57315 29.14 1493.28 1021.925 12.75 12.72 12.946 3.46976 4.57199 29.13 1493.28 1021.920 13.05 13.02 12.945 3.46945 4.57166 29.13 1493.28 1021.920 13.35 13.32 12.944 3.46988 4.57238 29.13 1493.28 1021.925 13.65 13.62 12.944 3.46907 4.57129 29.13 1493.28 1021.920 13.95 13.92 12.943 3.46946 4.57199 29.13 1493.28 1021.926 14.25 14.22 12.942 3.46902 4.57149 29.13 1493.28 1021.924 14.55 14.52 12.941 3.46958 4.57233 29.13 1493.29 1021.930 14.85 14.82 12.941 3.46992 4.57280 29.14 1493.30 1021.934 15.15 15.12 12.940 3.47045 4.57365 29.14 1493.31 1021.940 15.45 15.41 12.942 3.47101 4.57410 29.15 1493.32 1021.944 15.75 15.71 12.943 3.47094 4.57394 29.14 1493.33 1021.944 16.05 16.01 12.941 3.47011 4.57307 29.14 1493.32 1021.941 16.35 16.31 12.937 3.47092 4.57456 29.15 1493.33 1021.950 16.65 16.61 12.934 3.47158 4.57579 29.16 1493.33 1021.959 16.95 16.91 12.932 3.47335 4.57836 29.17 1493.35 1021.974 17.25 17.21 12.930 3.47385 4.57923 29.18 1493.36 1021.981 17.55 17.51 12.929 3.47504 4.58092 29.19 1493.37 1021.991 17.85 17.81 12.930 3.47531 4.58125 29.19 1493.38 1021.994 18.15 18.11 12.930 3.47551 4.58143 29.20 1493.39 1021.996 18.45 18.41 12.932 3.47572 4.58147 29.20 1493.40 1021.998 18.75 18.71 12.932 3.47927 4.58622 29.23 1493.44 1022.025 19.05 19.01 12.922 3.48047 4.58904 29.25 1493.44 1022.043 19.35 19.30 12.917 3.48150 4.59099 29.26 1493.44 1022.055 19.65 19.60 12.909 3.48218 4.59286 29.27 1493.43 1022.068 19.95 19.90 12.899 3.48507 4.59778 29.31 1493.45 1022.097 20.11 20.06 12.906 3.48581 4.59799 29.31 1493.47 1022.098