*2026/01/16 09:57:49.94 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/04/25 22:52:04.000 END TIME : UTC 2024/04/25 22:52:14.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 51 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 15.13 2 Depth metres 0.15 15.11 3 Temperature 'deg C (ITS90)' 10.741 11.358 4 Conductivity S/m 3.05755 3.15999 5 Conductance:Specific S/m 4.20477 4.41891 6 Salinity PSS-78 26.43 27.86 7 Speed:Sound m/s 1483.44 1484.34 8 Density kg/m^3 1020.053 1021.328 $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 : 2024-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 99 LATITUDE : 49 16.70800 N ! (deg min) LONGITUDE : 125 52.74350 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240425_225204 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 08:59:58 51 51 MERGEHDR 1.3 2026/01/16 09:53:50 51 51 HDREDIT2 3.2 2026/01/16 09:55:04 ? ? REMOVECH 8.2 2026/01/16 09:56:16 51 51 CALIB 12.1 2026/01/16 09:56:48 51 51 CLEAN 5.3 2026/01/16 09:57:49 51 51 $END $REMARKS -HEADER EDITS: 2026/01/16 09:55:04 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 09:56:16 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:56:48 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 09:57:46 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 11.358 3.05755 4.20477 26.43 1484.34 1020.053 0.45 0.45 11.236 3.07815 4.24734 26.71 1484.25 1020.296 0.75 0.75 11.035 3.09625 4.29614 27.03 1483.92 1020.579 1.05 1.05 10.954 3.09845 4.30893 27.12 1483.73 1020.657 1.35 1.35 10.933 3.09979 4.31324 27.14 1483.70 1020.683 1.65 1.65 10.886 3.09906 4.31788 27.17 1483.57 1020.714 1.95 1.95 10.876 3.09924 4.31934 27.18 1483.55 1020.724 2.25 2.25 10.860 3.10019 4.32268 27.20 1483.52 1020.745 2.55 2.55 10.831 3.10315 4.33020 27.25 1483.48 1020.789 2.85 2.85 10.820 3.10662 4.33640 27.29 1483.50 1020.825 3.15 3.15 10.805 3.10902 4.34155 27.33 1483.49 1020.855 3.45 3.45 10.787 3.11178 4.34766 27.37 1483.48 1020.891 3.75 3.75 10.773 3.11250 4.35040 27.38 1483.45 1020.908 4.05 4.04 10.760 3.11422 4.35436 27.41 1483.44 1020.932 4.35 4.34 10.757 3.11487 4.35560 27.42 1483.45 1020.940 4.65 4.64 10.755 3.11610 4.35759 27.43 1483.46 1020.953 4.95 4.94 10.752 3.11772 4.36017 27.45 1483.48 1020.968 5.25 5.24 10.750 3.11979 4.36330 27.47 1483.50 1020.986 5.55 5.54 10.748 3.12182 4.36643 27.49 1483.52 1021.005 5.85 5.84 10.746 3.12411 4.36983 27.52 1483.55 1021.025 6.15 6.14 10.744 3.12546 4.37196 27.53 1483.56 1021.038 6.45 6.44 10.743 3.12599 4.37286 27.54 1483.57 1021.044 6.75 6.74 10.743 3.12583 4.37261 27.54 1483.58 1021.044 7.05 7.04 10.742 3.12615 4.37323 27.54 1483.58 1021.048 7.35 7.34 10.742 3.12631 4.37344 27.54 1483.59 1021.051 7.65 7.64 10.742 3.12805 4.37588 27.56 1483.61 1021.065 7.95 7.94 10.741 3.12989 4.37853 27.58 1483.64 1021.081 8.25 8.24 10.741 3.13206 4.38157 27.60 1483.67 1021.099 8.55 8.54 10.742 3.13464 4.38504 27.62 1483.71 1021.119 8.85 8.84 10.742 3.13551 4.38628 27.63 1483.72 1021.127 9.15 9.14 10.743 3.13658 4.38767 27.64 1483.74 1021.135 9.45 9.44 10.743 3.13849 4.39031 27.66 1483.77 1021.151 9.75 9.74 10.745 3.14183 4.39477 27.69 1483.82 1021.176 10.05 10.03 10.747 3.14450 4.39828 27.71 1483.86 1021.196 10.35 10.33 10.745 3.14743 4.40257 27.74 1483.89 1021.221 10.65 10.63 10.746 3.14787 4.40314 27.75 1483.90 1021.225 10.95 10.93 10.746 3.14892 4.40456 27.76 1483.92 1021.234 11.25 11.23 10.748 3.14949 4.40518 27.76 1483.94 1021.239 11.55 11.53 10.749 3.15058 4.40657 27.77 1483.96 1021.247 11.85 11.83 10.748 3.15060 4.40662 27.77 1483.96 1021.249 12.15 12.13 10.748 3.15173 4.40823 27.78 1483.98 1021.259 12.45 12.43 10.748 3.15255 4.40945 27.79 1483.99 1021.267 12.75 12.73 10.747 3.15260 4.40959 27.79 1484.00 1021.269 13.05 13.03 10.749 3.15380 4.41102 27.80 1484.02 1021.278 13.35 13.33 10.750 3.15542 4.41317 27.82 1484.05 1021.291 13.65 13.63 10.752 3.15884 4.41770 27.85 1484.10 1021.316 13.95 13.93 10.754 3.15964 4.41861 27.85 1484.12 1021.322 14.25 14.23 10.755 3.15953 4.41832 27.85 1484.12 1021.322 14.55 14.53 10.756 3.15915 4.41764 27.85 1484.13 1021.320 14.85 14.83 10.755 3.15999 4.41891 27.86 1484.14 1021.328 15.13 15.11 10.756 3.15976 4.41848 27.85 1484.14 1021.327