*2026/01/16 09:47:02.38 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/09/29 16:56:28.000 END TIME : UTC 2023/09/29 16:56:36.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 41 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 12.01 2 Depth metres 0.15 11.98 3 Temperature 'deg C (ITS90)' 13.173 13.821 4 Conductivity S/m 2.07702 3.70225 5 Conductance:Specific S/m 2.71408 4.8464 6 Salinity PSS-78 16.44 31.1 7 Speed:Sound m/s 1479.22 1496.43 8 Density kg/m^3 1012.018 1023.393 $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 : 33 LATITUDE : 49 22.76850 N ! (deg min) LONGITUDE : 126 10.96880 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230929_165628 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 41 41 MERGEHDR 1.3 2026/01/15 13:41:47 41 41 HDREDIT2 3.2 2026/01/15 14:00:54 ? ? REMOVECH 8.2 2026/01/15 14:01:17 41 41 CALIB 12.1 2026/01/16 09:46:02 41 41 CLEAN 5.3 2026/01/16 09:47:02 41 41 $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 13.264 2.07702 2.71408 16.44 1479.22 1012.018 0.45 0.45 13.807 2.40041 3.09279 18.98 1484.09 1013.886 0.75 0.75 13.821 2.74150 3.53092 21.96 1487.62 1016.169 1.05 1.06 13.772 2.93241 3.78157 23.67 1489.46 1017.502 1.35 1.36 13.709 3.14314 4.05994 25.60 1491.51 1018.998 1.65 1.66 13.673 3.26329 4.21904 26.71 1492.69 1019.861 1.95 1.96 13.648 3.31780 4.29239 27.22 1493.21 1020.262 2.25 2.25 13.632 3.38309 4.37867 27.83 1493.87 1020.733 2.55 2.55 13.598 3.41727 4.42674 28.16 1494.16 1021.000 2.85 2.85 13.573 3.45911 4.48383 28.56 1494.55 1021.315 3.15 3.15 13.556 3.49675 4.53469 28.92 1494.92 1021.596 3.45 3.45 13.528 3.53185 4.58346 29.26 1495.24 1021.868 3.75 3.75 13.506 3.56547 4.62982 29.59 1495.55 1022.126 4.05 4.05 13.482 3.59034 4.66496 29.84 1495.77 1022.323 4.35 4.35 13.461 3.61100 4.69433 30.04 1495.95 1022.488 4.65 4.65 13.445 3.62590 4.71576 30.20 1496.07 1022.609 4.95 4.95 13.432 3.63595 4.73041 30.30 1496.16 1022.692 5.25 5.25 13.419 3.64034 4.73769 30.35 1496.18 1022.735 5.55 5.55 13.413 3.64643 4.74634 30.41 1496.24 1022.785 5.85 5.85 13.398 3.65095 4.75405 30.46 1496.26 1022.831 6.15 6.14 13.385 3.65905 4.76625 30.55 1496.32 1022.901 6.45 6.44 13.373 3.66561 4.77625 30.62 1496.37 1022.959 6.75 6.74 13.364 3.66829 4.78088 30.65 1496.38 1022.987 7.05 7.04 13.361 3.66991 4.78337 30.67 1496.39 1023.002 7.35 7.34 13.353 3.67071 4.78539 30.68 1496.39 1023.015 7.65 7.64 13.340 3.67337 4.79048 30.72 1496.39 1023.046 7.95 7.94 13.330 3.67610 4.79528 30.75 1496.40 1023.075 8.25 8.24 13.312 3.67852 4.80080 30.79 1496.39 1023.109 8.55 8.54 13.294 3.68130 4.80667 30.83 1496.38 1023.145 8.85 8.83 13.273 3.68369 4.81240 30.87 1496.36 1023.181 9.15 9.13 13.259 3.68763 4.81935 30.92 1496.38 1023.222 9.45 9.43 13.243 3.68999 4.82436 30.95 1496.37 1023.253 9.75 9.73 13.228 3.69017 4.82658 30.96 1496.34 1023.269 10.05 10.03 13.212 3.69234 4.83141 31.00 1496.33 1023.299 10.35 10.33 13.202 3.69513 4.83625 31.03 1496.34 1023.328 10.65 10.63 13.194 3.69743 4.84035 31.06 1496.35 1023.353 10.95 10.93 13.189 3.69953 4.84372 31.08 1496.37 1023.373 11.25 11.23 13.199 3.70202 4.84572 31.10 1496.43 1023.384 11.55 11.52 13.198 3.70225 4.84613 31.10 1496.43 1023.388 11.85 11.82 13.175 3.70024 4.84640 31.10 1496.36 1023.393 12.01 11.98 13.173 3.69978 4.84604 31.10 1496.35 1023.392