*2026/01/16 09:47:04.53 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/11/30 21:29:30.000 END TIME : UTC 2023/11/30 21:29:42.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 63 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.89 2 Depth metres 0.15 18.87 3 Temperature 'deg C (ITS90)' 10.71 11.372 4 Conductivity S/m 3.19798 3.38447 5 Conductance:Specific S/m 4.47771 4.65265 6 Salinity PSS-78 28.27 29.55 7 Speed:Sound m/s 1484.23 1488.44 8 Density kg/m^3 1021.588 1022.561 $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 : 87 LATITUDE : 49 22.11720 N ! (deg min) LONGITUDE : 126 4.95440 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231130_212930 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:52 63 63 MERGEHDR 1.3 2026/01/15 13:41:48 63 63 HDREDIT2 3.2 2026/01/15 14:00:56 ? ? REMOVECH 8.2 2026/01/15 14:01:18 63 63 CALIB 12.1 2026/01/16 09:46:08 63 63 CLEAN 5.3 2026/01/16 09:47:04 63 63 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:56 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 14:01:18 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:08 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 10.751 3.20214 4.47842 28.28 1484.39 1021.588 0.45 0.45 10.710 3.19798 4.47771 28.27 1484.23 1021.589 0.75 0.75 10.721 3.20210 4.48210 28.30 1484.32 1021.613 1.05 1.05 10.742 3.20418 4.48235 28.30 1484.40 1021.614 1.35 1.35 10.734 3.20357 4.48251 28.30 1484.38 1021.617 1.65 1.65 10.714 3.20486 4.48678 28.33 1484.35 1021.643 1.95 1.95 10.759 3.20891 4.48685 28.34 1484.52 1021.641 2.25 2.25 10.824 3.21667 4.48953 28.36 1484.79 1021.651 2.55 2.55 10.844 3.22228 4.49490 28.40 1484.91 1021.680 2.85 2.85 10.863 3.22408 4.49505 28.40 1484.98 1021.680 3.15 3.15 10.878 3.22601 4.49583 28.41 1485.05 1021.685 3.45 3.45 10.879 3.22514 4.49444 28.40 1485.05 1021.678 3.75 3.75 10.913 3.22986 4.49681 28.42 1485.20 1021.689 4.05 4.05 10.914 3.23032 4.49727 28.42 1485.21 1021.693 4.35 4.35 10.938 3.23273 4.49770 28.43 1485.31 1021.695 4.65 4.65 10.955 3.23675 4.50116 28.45 1485.40 1021.713 4.95 4.95 10.983 3.23990 4.50196 28.46 1485.52 1021.716 5.25 5.25 11.013 3.24350 4.50326 28.47 1485.65 1021.722 5.55 5.55 11.044 3.24990 4.50826 28.51 1485.81 1021.748 5.85 5.85 11.056 3.25171 4.50926 28.52 1485.87 1021.753 6.15 6.15 11.063 3.26004 4.51994 28.60 1485.99 1021.812 6.45 6.45 11.160 3.27503 4.52849 28.67 1486.42 1021.851 6.75 6.75 11.285 3.29047 4.53424 28.72 1486.93 1021.872 7.05 7.04 11.360 3.32201 4.56823 28.96 1487.50 1022.051 7.35 7.34 11.369 3.33853 4.58978 29.12 1487.72 1022.169 7.65 7.64 11.365 3.35162 4.60836 29.25 1487.86 1022.272 7.95 7.94 11.347 3.35276 4.61219 29.27 1487.83 1022.296 8.25 8.24 11.340 3.35437 4.61523 29.29 1487.84 1022.314 8.55 8.54 11.318 3.35854 4.62374 29.35 1487.84 1022.364 8.85 8.84 11.322 3.36138 4.62714 29.37 1487.88 1022.384 9.15 9.14 11.325 3.36172 4.62730 29.37 1487.90 1022.385 9.45 9.44 11.325 3.36299 4.62905 29.39 1487.92 1022.396 9.75 9.74 11.325 3.36393 4.63034 29.40 1487.93 1022.405 10.05 10.04 11.325 3.36483 4.63151 29.40 1487.95 1022.412 10.35 10.34 11.322 3.36485 4.63200 29.41 1487.95 1022.417 10.65 10.64 11.312 3.36631 4.63521 29.43 1487.94 1022.436 10.95 10.94 11.313 3.36849 4.63816 29.45 1487.97 1022.454 11.25 11.24 11.325 3.37195 4.64140 29.47 1488.05 1022.471 11.55 11.54 11.334 3.37283 4.64141 29.47 1488.09 1022.472 11.85 11.84 11.332 3.37353 4.64268 29.48 1488.10 1022.480 12.15 12.14 11.329 3.37535 4.64549 29.50 1488.12 1022.497 12.45 12.44 11.333 3.37565 4.64548 29.50 1488.13 1022.498 12.75 12.74 11.341 3.37603 4.64492 29.50 1488.16 1022.495 13.05 13.04 11.342 3.37724 4.64648 29.51 1488.18 1022.505 13.35 13.34 11.333 3.37792 4.64851 29.52 1488.18 1022.518 13.65 13.64 11.332 3.37836 4.64932 29.53 1488.18 1022.524 13.95 13.93 11.332 3.37959 4.65100 29.54 1488.20 1022.535 14.25 14.23 11.341 3.38024 4.65069 29.54 1488.24 1022.533 14.55 14.53 11.349 3.38061 4.65025 29.54 1488.27 1022.531 14.85 14.83 11.347 3.38026 4.64999 29.53 1488.26 1022.531 15.15 15.13 11.356 3.38000 4.64851 29.52 1488.29 1022.524 15.45 15.43 11.355 3.38023 4.64898 29.53 1488.29 1022.528 15.75 15.73 11.356 3.38005 4.64854 29.52 1488.30 1022.526 16.05 16.03 11.351 3.38038 4.64960 29.53 1488.29 1022.534 16.35 16.33 11.356 3.38006 4.64860 29.52 1488.31 1022.529 16.65 16.63 11.354 3.38005 4.64886 29.53 1488.30 1022.532 16.95 16.93 11.359 3.38083 4.64917 29.53 1488.33 1022.535 17.25 17.23 11.359 3.38094 4.64943 29.53 1488.34 1022.537 17.55 17.53 11.360 3.38203 4.65070 29.54 1488.36 1022.546 17.85 17.83 11.369 3.38262 4.65038 29.54 1488.39 1022.544 18.15 18.13 11.370 3.38309 4.65089 29.54 1488.41 1022.548 18.45 18.43 11.372 3.38424 4.65228 29.55 1488.43 1022.557 18.89 18.87 11.371 3.38447 4.65265 29.55 1488.44 1022.561