*2026/01/16 10:37:55.49 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/23 20:48:04.000 END TIME : UTC 2025/06/23 20:48:12.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 44 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 13.04 2 Depth metres 0.15 13.02 3 Temperature 'deg C (ITS90)' 13.326 13.463 4 Conductivity S/m 3.4023 3.42189 5 Conductance:Specific S/m 4.42599 4.46287 6 Salinity PSS-78 28.14 28.39 7 Speed:Sound m/s 1493.47 1493.73 8 Density kg/m^3 1021.009 1021.276 $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 : 2025-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 173 LATITUDE : 49 7.31450 N ! (deg min) LONGITUDE : 125 48.51190 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250623_204804 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:31 44 44 MERGEHDR 1.3 2026/01/16 10:35:45 44 44 HDREDIT2 3.2 2026/01/16 10:36:16 ? ? REMOVECH 8.2 2026/01/16 10:36:44 44 44 CALIB 12.1 2026/01/16 10:37:19 44 44 CLEAN 5.3 2026/01/16 10:37:55 44 44 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:16 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 10:36:44 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:19 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 10:37:42 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 13.408 3.40444 4.43192 28.18 1493.51 1021.044 0.45 0.45 13.429 3.40279 4.42739 28.15 1493.55 1021.018 0.75 0.75 13.435 3.40230 4.42603 28.14 1493.57 1021.011 1.05 1.05 13.448 3.40366 4.42633 28.15 1493.62 1021.012 1.35 1.35 13.463 3.40470 4.42599 28.15 1493.67 1021.009 1.65 1.65 13.452 3.40719 4.43040 28.18 1493.68 1021.036 1.95 1.95 13.410 3.41295 4.44280 28.26 1493.64 1021.110 2.25 2.25 13.366 3.41376 4.44889 28.30 1493.54 1021.150 2.55 2.55 13.359 3.41426 4.45045 28.31 1493.53 1021.161 2.85 2.85 13.351 3.41393 4.45085 28.31 1493.52 1021.166 3.15 3.14 13.345 3.41351 4.45102 28.31 1493.50 1021.169 3.45 3.44 13.343 3.41349 4.45129 28.32 1493.50 1021.172 3.75 3.74 13.338 3.41241 4.45043 28.31 1493.48 1021.169 4.05 4.04 13.333 3.41273 4.45137 28.31 1493.48 1021.176 4.35 4.34 13.332 3.41219 4.45083 28.31 1493.47 1021.174 4.65 4.64 13.332 3.41278 4.45165 28.32 1493.48 1021.180 4.95 4.94 13.329 3.41324 4.45251 28.32 1493.49 1021.186 5.25 5.24 13.330 3.41306 4.45221 28.32 1493.49 1021.186 5.55 5.54 13.329 3.41331 4.45261 28.32 1493.50 1021.190 5.85 5.84 13.331 3.41279 4.45173 28.32 1493.50 1021.186 6.15 6.14 13.333 3.41248 4.45112 28.31 1493.51 1021.184 6.45 6.44 13.329 3.41415 4.45380 28.33 1493.52 1021.200 6.75 6.74 13.328 3.41295 4.45224 28.32 1493.51 1021.193 7.05 7.04 13.326 3.41381 4.45370 28.33 1493.52 1021.202 7.35 7.34 13.327 3.41378 4.45349 28.33 1493.53 1021.202 7.65 7.64 13.328 3.41343 4.45295 28.32 1493.53 1021.201 7.95 7.94 13.328 3.41333 4.45275 28.32 1493.54 1021.201 8.25 8.24 13.328 3.41353 4.45301 28.32 1493.54 1021.203 8.55 8.54 13.328 3.41322 4.45270 28.32 1493.54 1021.203 8.85 8.83 13.329 3.41241 4.45147 28.31 1493.54 1021.197 9.15 9.13 13.328 3.41316 4.45262 28.32 1493.55 1021.205 9.45 9.43 13.328 3.41358 4.45309 28.32 1493.56 1021.209 9.75 9.73 13.330 3.41548 4.45536 28.34 1493.59 1021.222 10.05 10.03 13.330 3.41692 4.45722 28.35 1493.61 1021.234 10.35 10.33 13.334 3.41664 4.45642 28.35 1493.62 1021.230 10.65 10.63 13.333 3.41697 4.45692 28.35 1493.63 1021.234 10.95 10.93 13.333 3.41795 4.45824 28.36 1493.65 1021.243 11.25 11.23 13.331 3.41765 4.45803 28.36 1493.64 1021.243 11.55 11.53 13.334 3.41893 4.45945 28.37 1493.67 1021.252 11.85 11.83 13.330 3.42048 4.46186 28.39 1493.68 1021.266 12.15 12.13 13.332 3.41913 4.45990 28.37 1493.67 1021.257 12.45 12.43 13.332 3.42064 4.46187 28.39 1493.70 1021.269 12.75 12.73 13.334 3.42064 4.46167 28.38 1493.70 1021.269 13.04 13.02 13.337 3.42189 4.46287 28.39 1493.73 1021.276