*2026/01/16 09:57:54.85 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/10/14 20:23:34.000 END TIME : UTC 2024/10/14 20:23:42.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 43 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 12.68 2 Depth metres 0.15 12.63 3 Temperature 'deg C (ITS90)' 13.994 14.609 4 Conductivity S/m 3.59419 3.94587 5 Conductance:Specific S/m 4.53707 5.05913 6 Salinity PSS-78 29.01 32.7 7 Speed:Sound m/s 1498.45 1500.97 8 Density kg/m^3 1021.444 1024.451 $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 : 251 LATITUDE : 49 6.93700 N ! (deg min) LONGITUDE : 125 47.89430 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20241014_202334 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 09:00:06 43 43 MERGEHDR 1.3 2026/01/16 09:54:06 43 43 HDREDIT2 3.2 2026/01/16 09:55:11 ? ? REMOVECH 8.2 2026/01/16 09:56:22 43 43 CALIB 12.1 2026/01/16 09:56:56 43 43 CLEAN 5.3 2026/01/16 09:57:54 43 43 $END $REMARKS -HEADER EDITS: 2026/01/16 09:55:11 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 09:56:22 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:56:56 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 14.609 3.59419 4.53707 29.01 1498.45 1021.444 0.45 0.45 14.599 3.62174 4.57301 29.27 1498.72 1021.643 0.75 0.75 14.476 3.68280 4.66460 29.91 1499.08 1022.165 1.05 1.05 14.372 3.74395 4.75460 30.55 1499.48 1022.677 1.35 1.35 14.341 3.77548 4.79841 30.86 1499.75 1022.924 1.65 1.65 14.304 3.81809 4.85716 31.27 1500.12 1023.255 1.95 1.94 14.308 3.86411 4.91512 31.69 1500.63 1023.576 2.25 2.24 14.272 3.88231 4.94279 31.89 1500.74 1023.736 2.55 2.54 14.238 3.87085 4.93253 31.81 1500.55 1023.685 2.85 2.84 14.216 3.85191 4.91112 31.65 1500.30 1023.571 3.15 3.14 14.181 3.85274 4.91657 31.69 1500.23 1023.608 3.45 3.44 14.161 3.85457 4.92139 31.72 1500.21 1023.638 3.75 3.74 14.145 3.85702 4.92661 31.76 1500.20 1023.671 4.05 4.04 14.123 3.85771 4.93027 31.78 1500.17 1023.696 4.35 4.33 14.101 3.85871 4.93431 31.81 1500.13 1023.723 4.65 4.63 14.073 3.85855 4.93768 31.83 1500.07 1023.747 4.95 4.93 14.061 3.85964 4.94048 31.85 1500.06 1023.765 5.25 5.23 14.059 3.85689 4.93726 31.83 1500.03 1023.749 5.55 5.53 14.058 3.86465 4.94732 31.90 1500.12 1023.806 5.85 5.83 14.049 3.86044 4.94303 31.87 1500.06 1023.784 6.15 6.13 14.048 3.87301 4.95924 31.98 1500.19 1023.876 6.45 6.43 14.035 3.87906 4.96866 32.05 1500.23 1023.931 6.75 6.72 14.030 3.90117 4.99763 32.26 1500.47 1024.094 7.05 7.02 14.028 3.91895 5.02069 32.42 1500.66 1024.223 7.35 7.32 14.021 3.93040 5.03624 32.53 1500.77 1024.312 7.65 7.62 14.023 3.93160 5.03752 32.54 1500.79 1024.320 7.95 7.92 14.015 3.93742 5.04602 32.60 1500.84 1024.370 8.25 8.22 14.016 3.93770 5.04628 32.61 1500.85 1024.372 8.55 8.52 14.016 3.93840 5.04711 32.61 1500.87 1024.378 8.85 8.81 14.000 3.94451 5.05712 32.68 1500.90 1024.437 9.15 9.11 14.000 3.94528 5.05800 32.69 1500.91 1024.443 9.45 9.41 13.997 3.94587 5.05913 32.70 1500.92 1024.451 9.75 9.71 13.995 3.94364 5.05656 32.68 1500.89 1024.439 10.05 10.01 13.999 3.93563 5.04581 32.60 1500.82 1024.380 10.35 10.31 13.997 3.93272 5.04240 32.58 1500.79 1024.362 10.65 10.60 13.996 3.93010 5.03912 32.55 1500.76 1024.345 10.95 10.90 13.994 3.93041 5.03976 32.56 1500.77 1024.350 11.25 11.20 13.998 3.93456 5.04462 32.59 1500.83 1024.378 11.55 11.50 14.004 3.93976 5.05047 32.63 1500.90 1024.411 11.85 11.80 14.007 3.94181 5.05275 32.65 1500.93 1024.425 12.15 12.10 14.019 3.94233 5.05180 32.64 1500.97 1024.419 12.45 12.40 14.006 3.93956 5.04993 32.63 1500.92 1024.411 12.68 12.63 14.010 3.94183 5.05232 32.65 1500.96 1024.425