*2026/01/16 09:47:01.97 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/08/30 18:36:36.000 END TIME : UTC 2023/08/30 18:36:43.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 37 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 10.97 2 Depth metres 0.15 10.93 3 Temperature 'deg C (ITS90)' 14.93 15.035 4 Conductivity S/m 3.81813 3.82605 5 Conductance:Specific S/m 4.77297 4.78176 6 Salinity PSS-78 30.72 30.78 7 Speed:Sound m/s 1501.71 1501.9 8 Density kg/m^3 1022.675 1022.779 $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 : 2023-031 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 17 LATITUDE : 49 14.52190 N ! (deg min) LONGITUDE : 125 51.22850 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230830_183636 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 37 37 MERGEHDR 1.3 2026/01/15 13:41:46 37 37 HDREDIT2 3.2 2026/01/15 14:00:53 ? ? REMOVECH 8.2 2026/01/15 14:01:17 37 37 CALIB 12.1 2026/01/16 09:46:00 37 37 CLEAN 5.3 2026/01/16 09:47:01 37 37 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:53 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 2026/01/15 14:01:17 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:00 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 09:47:01 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 15.013 3.82194 4.77589 30.74 1501.77 1022.692 0.45 0.45 15.025 3.82079 4.77297 30.72 1501.79 1022.675 0.75 0.75 15.003 3.82055 4.77539 30.74 1501.74 1022.693 1.05 1.05 15.005 3.82049 4.77505 30.74 1501.75 1022.692 1.35 1.35 15.009 3.82176 4.77619 30.74 1501.77 1022.699 1.65 1.64 15.018 3.82195 4.77527 30.74 1501.80 1022.694 1.95 1.94 15.032 3.82361 4.77573 30.74 1501.85 1022.695 2.25 2.24 15.035 3.82594 4.77821 30.76 1501.89 1022.710 2.55 2.54 15.027 3.82605 4.77931 30.77 1501.88 1022.718 2.85 2.84 15.006 3.82250 4.77737 30.75 1501.80 1022.712 3.15 3.14 14.989 3.82161 4.77829 30.76 1501.76 1022.721 3.45 3.44 15.009 3.82334 4.77811 30.76 1501.82 1022.718 3.75 3.74 15.010 3.82463 4.77953 30.77 1501.85 1022.727 4.05 4.04 14.991 3.82210 4.77872 30.76 1501.78 1022.727 4.35 4.34 14.984 3.82157 4.77889 30.76 1501.76 1022.730 4.65 4.63 14.992 3.82208 4.77859 30.76 1501.79 1022.729 4.95 4.93 14.996 3.82290 4.77912 30.76 1501.81 1022.732 5.25 5.23 14.991 3.82178 4.77831 30.76 1501.80 1022.730 5.55 5.53 14.992 3.82220 4.77866 30.76 1501.81 1022.733 5.85 5.83 15.003 3.82305 4.77849 30.76 1501.85 1022.731 6.15 6.13 15.014 3.82258 4.77654 30.75 1501.87 1022.720 6.45 6.43 15.003 3.82318 4.77865 30.76 1501.86 1022.735 6.75 6.73 14.987 3.82277 4.78006 30.77 1501.82 1022.746 7.05 7.03 15.008 3.82063 4.77486 30.73 1501.85 1022.716 7.35 7.33 15.018 3.82211 4.77545 30.74 1501.90 1022.718 7.65 7.62 15.017 3.82210 4.77564 30.74 1501.90 1022.721 7.95 7.92 15.007 3.82199 4.77666 30.75 1501.88 1022.729 8.25 8.22 14.999 3.82057 4.77587 30.74 1501.85 1022.728 8.55 8.52 14.997 3.82178 4.77760 30.75 1501.86 1022.739 8.85 8.82 14.983 3.82259 4.78028 30.77 1501.84 1022.757 9.15 9.12 14.984 3.82250 4.78004 30.77 1501.85 1022.757 9.45 9.42 14.992 3.82117 4.77743 30.75 1501.86 1022.742 9.75 9.72 15.007 3.81948 4.77347 30.72 1501.88 1022.719 10.05 10.02 14.977 3.81875 4.77623 30.74 1501.81 1022.741 10.35 10.32 14.943 3.81813 4.77945 30.76 1501.73 1022.765 10.65 10.62 14.930 3.81839 4.78139 30.77 1501.71 1022.779 10.97 10.93 14.955 3.82115 4.78176 30.78 1501.80 1022.778