*2026/01/16 09:47:02.47 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/09/29 20:34:32.000 END TIME : UTC 2023/09/29 20:34:39.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 39 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 11.53 2 Depth metres 0.15 11.52 3 Temperature 'deg C (ITS90)' 12.729 13.206 4 Conductivity S/m 1.23256 3.62197 5 Conductance:Specific S/m 1.63342 4.77847 6 Salinity PSS-78 9.46 30.59 7 Speed:Sound m/s 1469.1 1494.85 8 Density kg/m^3 1006.727 1023.052 $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 : 37 LATITUDE : 49 24.94640 N ! (deg min) LONGITUDE : 125 54.09550 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230929_203432 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 39 39 MERGEHDR 1.3 2026/01/15 13:41:47 39 39 HDREDIT2 3.2 2026/01/15 14:00:54 ? ? REMOVECH 8.2 2026/01/15 14:01:17 39 39 CALIB 12.1 2026/01/16 09:46:02 39 39 CLEAN 5.3 2026/01/16 09:47:02 39 39 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:54 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 09:46:02 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 12.729 1.23256 1.63342 9.46 1469.10 1006.727 0.45 0.46 13.109 2.14622 2.81591 17.10 1479.47 1012.560 0.75 0.76 13.150 2.99919 3.93075 24.67 1488.51 1018.380 1.05 1.06 13.189 3.23026 4.22935 26.75 1491.09 1019.979 1.35 1.36 13.167 3.29010 4.31016 27.31 1491.69 1020.420 1.65 1.66 13.176 3.31455 4.34113 27.53 1491.98 1020.588 1.95 1.96 13.174 3.32974 4.36127 27.67 1492.15 1020.699 2.25 2.26 13.174 3.34183 4.37705 27.78 1492.28 1020.785 2.55 2.56 13.184 3.36779 4.40992 28.01 1492.59 1020.964 2.85 2.86 13.176 3.40795 4.46353 28.39 1493.01 1021.258 3.15 3.16 13.186 3.45187 4.51981 28.79 1493.52 1021.564 3.45 3.46 13.206 3.51201 4.59619 29.33 1494.23 1021.980 3.75 3.76 13.199 3.54200 4.63622 29.61 1494.55 1022.201 4.05 4.06 13.190 3.55303 4.65180 29.72 1494.65 1022.289 4.35 4.36 13.170 3.56470 4.66952 29.84 1494.74 1022.390 4.65 4.66 13.150 3.56973 4.67858 29.91 1494.75 1022.443 4.95 4.96 13.135 3.57394 4.68589 29.96 1494.76 1022.487 5.25 5.26 13.132 3.57879 4.69260 30.00 1494.81 1022.525 5.55 5.55 13.127 3.58247 4.69808 30.04 1494.85 1022.557 5.85 5.85 13.112 3.58527 4.70365 30.08 1494.84 1022.591 6.15 6.15 13.096 3.58562 4.70603 30.10 1494.81 1022.607 6.45 6.45 13.092 3.58645 4.70766 30.11 1494.82 1022.618 6.75 6.75 13.070 3.58854 4.71312 30.14 1494.79 1022.652 7.05 7.05 13.057 3.59130 4.71838 30.18 1494.80 1022.684 7.35 7.35 13.036 3.59436 4.72494 30.23 1494.78 1022.724 7.65 7.65 13.028 3.59489 4.72660 30.24 1494.78 1022.735 7.95 7.95 13.015 3.59787 4.73213 30.27 1494.78 1022.768 8.25 8.25 12.989 3.60080 4.73922 30.32 1494.76 1022.812 8.55 8.55 12.987 3.60269 4.74201 30.34 1494.78 1022.829 8.85 8.85 12.971 3.60407 4.74586 30.37 1494.76 1022.853 9.15 9.15 12.963 3.60593 4.74926 30.39 1494.76 1022.874 9.45 9.45 12.955 3.60836 4.75342 30.42 1494.78 1022.899 9.75 9.75 12.937 3.61034 4.75837 30.45 1494.76 1022.930 10.05 10.05 12.920 3.61118 4.76153 30.47 1494.73 1022.951 10.35 10.35 12.923 3.61347 4.76427 30.49 1494.77 1022.967 10.65 10.65 12.922 3.61507 4.76644 30.51 1494.79 1022.980 10.95 10.95 12.905 3.61879 4.77346 30.56 1494.80 1023.022 11.25 11.24 12.902 3.62131 4.77720 30.58 1494.82 1023.044 11.53 11.52 12.899 3.62197 4.77847 30.59 1494.82 1023.052