*2026/01/16 10:37:55.00 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/28 22:13:44.000 END TIME : UTC 2025/05/28 22:13:56.400 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 18.76 2 Depth metres 0.15 18.69 3 Temperature 'deg C (ITS90)' 11.007 12.051 4 Conductivity S/m 3.47614 3.52448 5 Conductance:Specific S/m 4.69157 4.88582 6 Salinity PSS-78 29.9 31.16 7 Speed:Sound m/s 1489.07 1490.97 8 Density kg/m^3 1022.627 1023.872 $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 : 2025-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 168 LATITUDE : 49 49.05060 N ! (deg min) LONGITUDE : 126 59.57290 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250528_221344 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:31 63 63 MERGEHDR 1.3 2026/01/16 10:35:45 63 63 HDREDIT2 3.2 2026/01/16 10:36:16 ? ? REMOVECH 8.2 2026/01/16 10:36:43 63 63 CALIB 12.1 2026/01/16 10:37:18 63 63 CLEAN 5.3 2026/01/16 10:37:55 63 63 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:16 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 10:36:43 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:18 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 10:37:42 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 12.042 3.48317 4.70162 29.97 1490.97 1022.681 0.45 0.45 12.047 3.47614 4.69157 29.90 1490.91 1022.627 0.75 0.75 12.051 3.47831 4.69399 29.92 1490.95 1022.641 1.05 1.05 12.042 3.47867 4.69560 29.93 1490.93 1022.652 1.35 1.35 12.028 3.48361 4.70405 29.99 1490.96 1022.701 1.65 1.64 12.021 3.48544 4.70740 30.01 1490.97 1022.722 1.95 1.94 12.004 3.48758 4.71250 30.05 1490.95 1022.753 2.25 2.24 11.952 3.49258 4.72586 30.13 1490.89 1022.833 2.55 2.54 11.903 3.49915 4.74106 30.24 1490.84 1022.923 2.85 2.84 11.873 3.50194 4.74867 30.29 1490.81 1022.969 3.15 3.14 11.838 3.50242 4.75385 30.32 1490.73 1023.002 3.45 3.44 11.819 3.50173 4.75529 30.33 1490.68 1023.013 3.75 3.74 11.800 3.50231 4.75857 30.35 1490.64 1023.034 4.05 4.04 11.776 3.50249 4.76196 30.37 1490.59 1023.057 4.35 4.34 11.752 3.50268 4.76525 30.39 1490.54 1023.079 4.65 4.63 11.736 3.50298 4.76775 30.41 1490.50 1023.095 4.95 4.93 11.720 3.50299 4.76982 30.42 1490.47 1023.109 5.25 5.23 11.710 3.50277 4.77084 30.43 1490.45 1023.117 5.55 5.53 11.705 3.50134 4.76953 30.42 1490.42 1023.112 5.85 5.83 11.702 3.50253 4.77162 30.43 1490.43 1023.125 6.15 6.13 11.693 3.50187 4.77190 30.43 1490.41 1023.129 6.45 6.43 11.678 3.50288 4.77520 30.45 1490.39 1023.150 6.75 6.73 11.666 3.50349 4.77762 30.47 1490.37 1023.165 7.05 7.02 11.653 3.50458 4.78073 30.49 1490.35 1023.185 7.35 7.32 11.644 3.50643 4.78446 30.52 1490.36 1023.208 7.65 7.62 11.636 3.50812 4.78786 30.54 1490.36 1023.228 7.95 7.92 11.622 3.50910 4.79098 30.56 1490.34 1023.248 8.25 8.22 11.603 3.51083 4.79582 30.59 1490.32 1023.278 8.55 8.52 11.594 3.51118 4.79742 30.60 1490.31 1023.289 8.85 8.82 11.576 3.51207 4.80107 30.63 1490.28 1023.312 9.15 9.12 11.555 3.51211 4.80389 30.64 1490.23 1023.331 9.45 9.42 11.539 3.51278 4.80695 30.66 1490.20 1023.350 9.75 9.71 11.525 3.51358 4.80980 30.68 1490.18 1023.369 10.05 10.01 11.519 3.51406 4.81126 30.69 1490.17 1023.379 10.35 10.31 11.513 3.51442 4.81259 30.70 1490.17 1023.388 10.65 10.61 11.513 3.51690 4.81600 30.73 1490.20 1023.408 10.95 10.91 11.509 3.51839 4.81854 30.74 1490.21 1023.423 11.25 11.21 11.502 3.52125 4.82343 30.78 1490.23 1023.452 11.55 11.51 11.479 3.52169 4.82707 30.80 1490.19 1023.476 11.85 11.81 11.457 3.52367 4.83265 30.84 1490.16 1023.510 12.15 12.10 11.441 3.52393 4.83509 30.85 1490.13 1023.526 12.45 12.40 11.427 3.52361 4.83654 30.86 1490.09 1023.537 12.75 12.70 11.407 3.52294 4.83827 30.87 1490.04 1023.549 13.05 13.00 11.384 3.52344 4.84205 30.90 1489.99 1023.573 13.35 13.30 11.372 3.52325 4.84341 30.90 1489.96 1023.583 13.65 13.60 11.360 3.52368 4.84561 30.92 1489.94 1023.598 13.95 13.90 11.332 3.52345 4.84902 30.94 1489.88 1023.620 14.25 14.20 11.296 3.52317 4.85338 30.97 1489.79 1023.649 14.55 14.49 11.263 3.52379 4.85871 31.00 1489.72 1023.683 14.85 14.79 11.237 3.52393 4.86238 31.02 1489.66 1023.707 15.15 15.09 11.215 3.52448 4.86607 31.05 1489.62 1023.730 15.45 15.39 11.188 3.52367 4.86852 31.06 1489.54 1023.747 15.75 15.69 11.163 3.52193 4.86953 31.06 1489.46 1023.756 16.05 15.99 11.144 3.52186 4.87200 31.08 1489.42 1023.773 16.35 16.29 11.124 3.52052 4.87280 31.08 1489.36 1023.780 16.65 16.59 11.114 3.52005 4.87347 31.09 1489.33 1023.786 16.95 16.88 11.090 3.51995 4.87658 31.11 1489.28 1023.807 17.25 17.18 11.068 3.51921 4.87860 31.12 1489.22 1023.821 17.55 17.48 11.065 3.51859 4.87811 31.11 1489.21 1023.820 17.85 17.78 11.043 3.51787 4.88009 31.13 1489.15 1023.834 18.15 18.08 11.026 3.51799 4.88255 31.14 1489.11 1023.850 18.45 18.38 11.007 3.51779 4.88482 31.15 1489.07 1023.866 18.76 18.69 11.007 3.51849 4.88582 31.16 1489.08 1023.872