*2026/01/16 09:47:02.10 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/09/28 19:14:22.000 END TIME : UTC 2023/09/28 19:14:29.200 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 10.94 3 Temperature 'deg C (ITS90)' 14.895 15.077 4 Conductivity S/m 3.53381 3.73239 5 Conductance:Specific S/m 4.40882 4.67605 6 Salinity PSS-78 28.13 30.02 7 Speed:Sound m/s 1498.94 1500.77 8 Density kg/m^3 1020.672 1022.204 $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 : 23 LATITUDE : 49 10.98030 N ! (deg min) LONGITUDE : 125 46.04690 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230928_191422 ! 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 09:47:02 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 15.077 3.53381 4.40882 28.13 1498.94 1020.672 0.45 0.45 15.051 3.55858 4.44252 28.37 1499.14 1020.860 0.75 0.75 15.035 3.56851 4.45671 28.47 1499.21 1020.942 1.05 1.05 15.021 3.56944 4.45950 28.49 1499.19 1020.960 1.35 1.35 14.997 3.57305 4.46660 28.54 1499.18 1021.004 1.65 1.65 14.971 3.57936 4.47744 28.61 1499.18 1021.069 1.95 1.95 14.932 3.58383 4.48740 28.68 1499.14 1021.130 2.25 2.25 14.907 3.59491 4.50416 28.80 1499.20 1021.227 2.55 2.55 14.895 3.60547 4.51871 28.90 1499.29 1021.310 2.85 2.85 14.895 3.61710 4.53324 29.00 1499.41 1021.390 3.15 3.14 14.912 3.64113 4.56149 29.21 1499.70 1021.543 3.45 3.44 14.920 3.64975 4.57138 29.28 1499.82 1021.597 3.75 3.74 14.926 3.66857 4.59424 29.44 1500.03 1021.723 4.05 4.04 14.928 3.67207 4.59834 29.47 1500.08 1021.746 4.35 4.34 14.929 3.67295 4.59940 29.48 1500.09 1021.753 4.65 4.64 14.939 3.68624 4.61487 29.59 1500.26 1021.837 4.95 4.94 14.942 3.69363 4.62374 29.65 1500.35 1021.887 5.25 5.24 14.942 3.69621 4.62700 29.67 1500.38 1021.906 5.55 5.54 14.938 3.70309 4.63605 29.74 1500.45 1021.957 5.85 5.84 14.936 3.71361 4.64943 29.83 1500.56 1022.032 6.15 6.14 14.930 3.72007 4.65820 29.89 1500.61 1022.083 6.45 6.44 14.925 3.72153 4.66071 29.91 1500.62 1022.099 6.75 6.74 14.923 3.72247 4.66211 29.92 1500.63 1022.108 7.05 7.04 14.921 3.72309 4.66304 29.93 1500.64 1022.114 7.35 7.33 14.920 3.72286 4.66288 29.93 1500.64 1022.115 7.65 7.63 14.919 3.72388 4.66427 29.94 1500.65 1022.124 7.95 7.93 14.919 3.72439 4.66493 29.94 1500.66 1022.129 8.25 8.23 14.917 3.72431 4.66504 29.94 1500.66 1022.131 8.55 8.53 14.916 3.72519 4.66630 29.95 1500.67 1022.139 8.85 8.83 14.914 3.72567 4.66713 29.96 1500.68 1022.146 9.15 9.13 14.913 3.72636 4.66814 29.96 1500.69 1022.153 9.45 9.43 14.912 3.72683 4.66886 29.97 1500.69 1022.158 9.75 9.73 14.911 3.72738 4.66957 29.97 1500.70 1022.163 10.05 10.03 14.910 3.72751 4.66990 29.98 1500.71 1022.166 10.35 10.33 14.909 3.72742 4.66989 29.97 1500.71 1022.168 10.65 10.63 14.908 3.73113 4.67461 30.01 1500.75 1022.195 10.97 10.94 14.910 3.73239 4.67605 30.02 1500.77 1022.204