*2026/01/16 09:57:49.77 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/04/25 19:20:01.000 END TIME : UTC 2024/04/25 19:20:16.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 80 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 23.93 2 Depth metres 0.15 23.9 3 Temperature 'deg C (ITS90)' 10.568 10.999 4 Conductivity S/m 2.91415 3.08627 5 Conductance:Specific S/m 4.04754 4.3369 6 Salinity PSS-78 25.31 27.27 7 Speed:Sound m/s 1481.71 1482.94 8 Density kg/m^3 1019.244 1020.934 $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 : 2024-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 94 LATITUDE : 49 10.54420 N ! (deg min) LONGITUDE : 125 46.75010 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240425_192001 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 08:59:58 80 80 MERGEHDR 1.3 2026/01/16 09:53:50 80 80 HDREDIT2 3.2 2026/01/16 09:55:04 ? ? REMOVECH 8.2 2026/01/16 09:56:16 80 80 CALIB 12.1 2026/01/16 09:56:48 80 80 CLEAN 5.3 2026/01/16 09:57:49 80 80 $END $REMARKS -HEADER EDITS: 2026/01/16 09:55:04 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 09:56:16 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:56:48 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 09:57:46 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 10.999 2.91415 4.04754 25.31 1481.71 1019.244 0.45 0.45 10.987 2.91970 4.05664 25.37 1481.75 1019.295 0.75 0.75 10.986 2.92582 4.06525 25.43 1481.82 1019.343 1.05 1.05 10.988 2.93205 4.07365 25.49 1481.90 1019.389 1.35 1.35 10.990 2.93578 4.07861 25.52 1481.96 1019.417 1.65 1.65 10.988 2.93817 4.08214 25.55 1481.98 1019.437 1.95 1.95 10.984 2.95506 4.10608 25.71 1482.17 1019.567 2.25 2.25 10.964 2.96750 4.12568 25.85 1482.26 1019.675 2.55 2.55 10.929 2.97013 4.13333 25.90 1482.20 1019.721 2.85 2.85 10.909 2.97714 4.14541 25.98 1482.23 1019.789 3.15 3.15 10.894 2.97975 4.15078 26.01 1482.23 1019.820 3.45 3.45 10.878 2.98470 4.15957 26.07 1482.25 1019.870 3.75 3.75 10.851 2.98784 4.16701 26.12 1482.21 1019.914 4.05 4.05 10.826 2.99178 4.17543 26.18 1482.19 1019.962 4.35 4.35 10.809 2.99731 4.18514 26.24 1482.22 1020.017 4.65 4.65 10.791 3.00062 4.19190 26.29 1482.21 1020.056 4.95 4.95 10.773 3.00208 4.19598 26.31 1482.18 1020.081 5.25 5.25 10.753 3.00575 4.20348 26.36 1482.18 1020.125 5.55 5.55 10.744 3.00677 4.20601 26.38 1482.17 1020.140 5.85 5.85 10.737 3.00781 4.20822 26.39 1482.17 1020.154 6.15 6.15 10.733 3.00820 4.20925 26.40 1482.16 1020.161 6.45 6.45 10.733 3.00931 4.21087 26.41 1482.18 1020.171 6.75 6.75 10.731 3.00977 4.21169 26.42 1482.19 1020.177 7.05 7.05 10.722 3.01273 4.21694 26.45 1482.20 1020.207 7.35 7.35 10.706 3.01887 4.22738 26.52 1482.23 1020.266 7.65 7.65 10.691 3.03031 4.24519 26.65 1482.33 1020.365 7.95 7.95 10.677 3.03453 4.25276 26.70 1482.35 1020.408 8.25 8.25 10.660 3.03644 4.25747 26.73 1482.33 1020.436 8.55 8.55 10.643 3.04317 4.26898 26.81 1482.36 1020.501 8.85 8.85 10.632 3.05015 4.28010 26.88 1482.42 1020.563 9.15 9.14 10.620 3.05163 4.28358 26.90 1482.41 1020.584 9.45 9.44 10.615 3.05272 4.28573 26.92 1482.41 1020.597 9.75 9.74 10.613 3.05251 4.28572 26.92 1482.41 1020.599 10.05 10.04 10.609 3.05284 4.28658 26.92 1482.41 1020.605 10.35 10.34 10.608 3.05311 4.28705 26.93 1482.41 1020.609 10.65 10.64 10.608 3.05358 4.28780 26.93 1482.42 1020.614 10.95 10.94 10.607 3.05406 4.28856 26.94 1482.43 1020.620 11.25 11.24 10.603 3.05457 4.28972 26.94 1482.43 1020.627 11.55 11.54 10.601 3.05482 4.29031 26.95 1482.43 1020.632 11.85 11.84 10.598 3.05577 4.29199 26.96 1482.44 1020.643 12.15 12.14 10.598 3.05598 4.29240 26.96 1482.45 1020.646 12.45 12.44 10.596 3.05687 4.29385 26.97 1482.46 1020.655 12.75 12.74 10.595 3.05759 4.29496 26.98 1482.47 1020.663 13.05 13.04 10.594 3.05781 4.29536 26.98 1482.47 1020.666 13.35 13.34 10.594 3.05778 4.29538 26.98 1482.48 1020.668 13.65 13.64 10.594 3.05848 4.29637 26.99 1482.49 1020.674 13.95 13.94 10.593 3.05819 4.29610 26.99 1482.49 1020.674 14.25 14.24 10.592 3.05833 4.29633 26.99 1482.49 1020.677 14.55 14.54 10.592 3.05855 4.29663 26.99 1482.50 1020.680 14.85 14.84 10.593 3.05849 4.29652 26.99 1482.51 1020.680 15.15 15.14 10.592 3.05884 4.29710 26.99 1482.51 1020.685 15.45 15.44 10.593 3.05895 4.29714 26.99 1482.52 1020.686 15.75 15.74 10.592 3.05893 4.29726 26.99 1482.52 1020.688 16.05 16.04 10.591 3.05973 4.29842 27.00 1482.54 1020.696 16.35 16.34 10.591 3.05953 4.29814 27.00 1482.54 1020.696 16.65 16.64 10.591 3.06063 4.29972 27.01 1482.56 1020.705 16.95 16.94 10.590 3.06086 4.30017 27.01 1482.56 1020.709 17.25 17.23 10.588 3.06141 4.30115 27.02 1482.57 1020.716 17.55 17.53 10.588 3.06149 4.30133 27.02 1482.57 1020.718 17.85 17.83 10.586 3.06222 4.30252 27.03 1482.58 1020.726 18.15 18.13 10.584 3.06222 4.30275 27.03 1482.58 1020.729 18.45 18.43 10.582 3.06201 4.30270 27.03 1482.58 1020.730 18.75 18.73 10.580 3.06238 4.30353 27.03 1482.58 1020.736 19.05 19.03 10.579 3.06337 4.30504 27.05 1482.59 1020.745 19.35 19.33 10.576 3.06441 4.30687 27.06 1482.60 1020.757 19.65 19.63 10.572 3.06620 4.30989 27.08 1482.62 1020.775 19.95 19.93 10.571 3.06982 4.31505 27.11 1482.66 1020.804 20.25 20.23 10.571 3.07361 4.32042 27.15 1482.71 1020.834 20.55 20.53 10.569 3.07579 4.32363 27.17 1482.74 1020.853 20.85 20.83 10.568 3.07594 4.32398 27.17 1482.74 1020.856 21.15 21.13 10.571 3.07708 4.32525 27.18 1482.77 1020.864 21.45 21.43 10.572 3.07777 4.32606 27.19 1482.78 1020.870 21.75 21.73 10.573 3.07954 4.32844 27.21 1482.81 1020.884 22.05 22.03 10.573 3.08146 4.33114 27.22 1482.84 1020.899 22.35 22.33 10.577 3.08330 4.33322 27.24 1482.88 1020.912 22.65 22.63 10.581 3.08401 4.33378 27.24 1482.90 1020.916 22.95 22.93 10.582 3.08627 4.33690 27.27 1482.93 1020.934 23.25 23.23 10.584 3.08541 4.33533 27.25 1482.93 1020.926 23.55 23.53 10.585 3.08562 4.33557 27.26 1482.94 1020.929 23.93 23.90 10.586 3.08459 4.33397 27.24 1482.94 1020.922