*2026/01/16 09:47:01.55 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/08/29 01:45:12.000 END TIME : UTC 2023/08/29 01:45:19.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 36 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 10.78 2 Depth metres 0.15 10.75 3 Temperature 'deg C (ITS90)' 14.998 16.022 4 Conductivity S/m 3.7997 3.87686 5 Conductance:Specific S/m 4.7182 4.75173 6 Salinity PSS-78 30.37 30.61 7 Speed:Sound m/s 1501.67 1504.61 8 Density kg/m^3 1022.244 1022.605 $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 : 3 LATITUDE : 49 11.13160 N ! (deg min) LONGITUDE : 125 46.44140 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230829_014512 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 36 36 MERGEHDR 1.3 2026/01/15 13:41:46 36 36 HDREDIT2 3.2 2026/01/15 14:00:52 ? ? REMOVECH 8.2 2026/01/15 14:01:17 36 36 CALIB 12.1 2026/01/16 09:45:59 36 36 CLEAN 5.3 2026/01/16 09:47:01 36 36 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:52 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 09:45:59 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 16.022 3.87686 4.72535 30.45 1504.61 1022.244 0.45 0.45 15.995 3.87622 4.72771 30.46 1504.55 1022.263 0.75 0.75 15.955 3.87515 4.73100 30.48 1504.45 1022.290 1.05 1.05 15.827 3.87650 4.74750 30.59 1504.18 1022.404 1.35 1.35 15.699 3.86704 4.75079 30.61 1503.80 1022.445 1.65 1.65 15.642 3.85110 4.73779 30.51 1503.52 1022.385 1.95 1.94 15.684 3.84279 4.72271 30.41 1503.53 1022.296 2.25 2.24 15.633 3.83428 4.71820 30.37 1503.34 1022.281 2.55 2.54 15.525 3.83240 4.72848 30.44 1503.08 1022.357 2.85 2.84 15.477 3.83191 4.73347 30.47 1502.97 1022.394 3.15 3.14 15.454 3.83083 4.73474 30.48 1502.91 1022.406 3.45 3.44 15.423 3.82757 4.73439 30.47 1502.81 1022.410 3.75 3.74 15.382 3.82538 4.73649 30.48 1502.70 1022.430 4.05 4.04 15.347 3.82015 4.73407 30.46 1502.57 1022.423 4.35 4.34 15.292 3.81772 4.73754 30.49 1502.43 1022.453 4.65 4.64 15.264 3.81300 4.73498 30.47 1502.32 1022.445 4.95 4.94 15.246 3.81021 4.73364 30.45 1502.25 1022.441 5.25 5.23 15.227 3.80989 4.73547 30.47 1502.21 1022.456 5.55 5.53 15.219 3.81076 4.73747 30.48 1502.21 1022.469 5.85 5.83 15.220 3.81001 4.73645 30.47 1502.21 1022.465 6.15 6.13 15.208 3.80837 4.73584 30.47 1502.17 1022.465 6.45 6.43 15.182 3.80682 4.73696 30.47 1502.10 1022.476 6.75 6.73 15.160 3.80611 4.73865 30.48 1502.05 1022.490 7.05 7.03 15.147 3.80533 4.73923 30.49 1502.01 1022.497 7.35 7.33 15.137 3.80470 4.73968 30.49 1501.99 1022.502 7.65 7.63 15.120 3.80401 4.74077 30.50 1501.95 1022.512 7.95 7.93 15.102 3.80319 4.74184 30.50 1501.90 1022.522 8.25 8.23 15.084 3.80227 4.74290 30.51 1501.85 1022.532 8.55 8.52 15.059 3.80099 4.74421 30.52 1501.79 1022.545 8.85 8.82 15.035 3.80129 4.74751 30.54 1501.74 1022.568 9.15 9.12 15.015 3.80093 4.74938 30.55 1501.70 1022.583 9.45 9.42 15.008 3.80113 4.75050 30.56 1501.69 1022.591 9.75 9.72 15.005 3.80108 4.75072 30.56 1501.69 1022.594 10.05 10.02 15.002 3.80072 4.75067 30.56 1501.68 1022.596 10.35 10.32 15.000 3.79970 4.74967 30.55 1501.67 1022.592 10.78 10.75 14.998 3.80120 4.75173 30.57 1501.69 1022.605