*2026/01/16 09:47:01.89 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/08/30 16:24:21.000 END TIME : UTC 2023/08/30 16:24:28.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 40 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 11.82 2 Depth metres 0.15 11.8 3 Temperature 'deg C (ITS90)' 14.64 14.665 4 Conductivity S/m 3.82672 3.8313 5 Conductance:Specific S/m 4.82474 4.83056 6 Salinity PSS-78 31.07 31.11 7 Speed:Sound m/s 1501.04 1501.2 8 Density kg/m^3 1023.033 1023.089 $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 : 14 LATITUDE : 49 13.97710 N ! (deg min) LONGITUDE : 125 54.82810 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230830_162421 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 40 40 MERGEHDR 1.3 2026/01/15 13:41:46 40 40 HDREDIT2 3.2 2026/01/15 14:00:53 ? ? REMOVECH 8.2 2026/01/15 14:01:17 40 40 CALIB 12.1 2026/01/16 09:46:00 40 40 CLEAN 5.3 2026/01/16 09:47:01 40 40 $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 14.656 3.83055 4.82971 31.10 1501.04 1023.044 0.45 0.45 14.660 3.83020 4.82883 31.10 1501.05 1023.040 0.75 0.75 14.654 3.83047 4.82983 31.10 1501.04 1023.048 1.05 1.05 14.656 3.82972 4.82861 31.10 1501.05 1023.042 1.35 1.35 14.656 3.83013 4.82924 31.10 1501.05 1023.047 1.65 1.65 14.656 3.83014 4.82915 31.10 1501.06 1023.047 1.95 1.95 14.653 3.82967 4.82894 31.10 1501.05 1023.048 2.25 2.25 14.649 3.82934 4.82903 31.10 1501.04 1023.050 2.55 2.54 14.650 3.82951 4.82915 31.10 1501.05 1023.052 2.85 2.84 14.654 3.83007 4.82938 31.10 1501.07 1023.054 3.15 3.14 14.657 3.83103 4.83020 31.11 1501.09 1023.059 3.45 3.44 14.657 3.83130 4.83056 31.11 1501.10 1023.063 3.75 3.74 14.661 3.82978 4.82809 31.09 1501.10 1023.049 4.05 4.04 14.657 3.82672 4.82474 31.07 1501.06 1023.033 4.35 4.34 14.649 3.82819 4.82766 31.09 1501.06 1023.052 4.65 4.64 14.647 3.82838 4.82803 31.09 1501.07 1023.055 4.95 4.94 14.647 3.82832 4.82803 31.09 1501.07 1023.056 5.25 5.24 14.646 3.82885 4.82879 31.09 1501.08 1023.062 5.55 5.54 14.646 3.82813 4.82786 31.09 1501.08 1023.058 5.85 5.84 14.645 3.82841 4.82840 31.09 1501.08 1023.062 6.15 6.14 14.644 3.82878 4.82900 31.10 1501.09 1023.067 6.45 6.44 14.641 3.82838 4.82876 31.09 1501.08 1023.068 6.75 6.74 14.640 3.82864 4.82930 31.10 1501.09 1023.072 7.05 7.04 14.641 3.82855 4.82904 31.10 1501.09 1023.072 7.35 7.33 14.641 3.82892 4.82946 31.10 1501.10 1023.075 7.65 7.63 14.641 3.82881 4.82938 31.10 1501.11 1023.076 7.95 7.93 14.641 3.82870 4.82917 31.10 1501.11 1023.076 8.25 8.23 14.640 3.82916 4.82986 31.10 1501.12 1023.081 8.55 8.53 14.640 3.82884 4.82946 31.10 1501.12 1023.080 8.85 8.83 14.641 3.82863 4.82918 31.10 1501.12 1023.080 9.15 9.13 14.642 3.82888 4.82934 31.10 1501.13 1023.082 9.45 9.43 14.645 3.82854 4.82857 31.09 1501.14 1023.078 9.75 9.73 14.653 3.82874 4.82777 31.09 1501.17 1023.074 10.05 10.03 14.665 3.82892 4.82663 31.08 1501.20 1023.067 10.35 10.33 14.657 3.82847 4.82699 31.08 1501.18 1023.072 10.65 10.63 14.651 3.82901 4.82843 31.09 1501.18 1023.082 10.95 10.93 14.650 3.82958 4.82921 31.10 1501.19 1023.087 11.25 11.23 14.651 3.82969 4.82923 31.10 1501.20 1023.089 11.55 11.53 14.653 3.82949 4.82877 31.09 1501.20 1023.087 11.82 11.80 14.652 3.82921 4.82847 31.09 1501.20 1023.087