*2026/01/16 10:37:54.41 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/27 20:07:51.000 END TIME : UTC 2025/05/27 20:08:02.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 56 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 16.51 2 Depth metres 0.15 16.46 3 Temperature 'deg C (ITS90)' 11.165 12.727 4 Conductivity S/m 3.11618 3.54438 5 Conductance:Specific S/m 4.13329 4.89774 6 Salinity PSS-78 26.04 31.26 7 Speed:Sound m/s 1488.55 1490.35 8 Density kg/m^3 1019.523 1023.915 $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 : 156 LATITUDE : 49 35.70000 N ! (deg min) LONGITUDE : 126 36.85020 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250527_200751 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:30 56 56 MERGEHDR 1.3 2026/01/16 10:35:44 56 56 HDREDIT2 3.2 2026/01/16 10:36:15 ? ? REMOVECH 8.2 2026/01/16 10:36:42 56 56 CALIB 12.1 2026/01/16 10:37:18 56 56 CLEAN 5.3 2026/01/16 10:37:54 56 56 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:15 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 10:36:42 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 12.727 3.13216 4.15104 26.17 1488.82 1019.612 0.45 0.45 12.712 3.11959 4.13611 26.06 1488.65 1019.535 0.75 0.75 12.696 3.11618 4.13329 26.04 1488.57 1019.523 1.05 1.05 12.679 3.13112 4.15502 26.19 1488.69 1019.643 1.35 1.35 12.672 3.13354 4.15893 26.22 1488.71 1019.666 1.65 1.65 12.659 3.14149 4.17092 26.30 1488.77 1019.734 1.95 1.95 12.630 3.14552 4.17950 26.36 1488.74 1019.785 2.25 2.25 12.581 3.14968 4.19053 26.43 1488.66 1019.852 2.55 2.55 12.543 3.15589 4.20305 26.51 1488.63 1019.925 2.85 2.85 12.508 3.16057 4.21325 26.58 1488.60 1019.985 3.15 3.15 12.474 3.16892 4.22816 26.68 1488.61 1020.071 3.45 3.45 12.413 3.17751 4.24648 26.81 1488.55 1020.178 3.75 3.75 12.375 3.18675 4.26319 26.92 1488.56 1020.274 4.05 4.05 12.314 3.21892 4.31323 27.26 1488.76 1020.553 4.35 4.35 12.316 3.23806 4.33876 27.44 1488.98 1020.692 4.65 4.65 12.340 3.25411 4.35742 27.58 1489.23 1020.792 4.95 4.95 12.349 3.27094 4.37884 27.73 1489.44 1020.908 5.25 5.25 12.319 3.29958 4.42084 28.02 1489.69 1021.141 5.55 5.55 12.282 3.30513 4.43259 28.10 1489.66 1021.210 5.85 5.85 12.234 3.31299 4.44892 28.21 1489.63 1021.305 6.15 6.14 12.183 3.32781 4.47494 28.39 1489.67 1021.454 6.45 6.44 12.115 3.35003 4.51301 28.65 1489.75 1021.670 6.75 6.74 12.048 3.36308 4.53876 28.82 1489.73 1021.819 7.05 7.04 11.993 3.39390 4.58719 29.16 1489.94 1022.090 7.35 7.34 11.947 3.42247 4.63156 29.47 1490.16 1022.339 7.65 7.64 11.912 3.42789 4.64333 29.55 1490.14 1022.408 7.95 7.94 11.845 3.44273 4.67187 29.74 1490.14 1022.572 8.25 8.24 11.752 3.47497 4.72758 30.12 1490.28 1022.888 8.55 8.54 11.651 3.50247 4.77818 30.47 1490.35 1023.178 8.85 8.84 11.603 3.50488 4.78775 30.54 1490.26 1023.236 9.15 9.14 11.576 3.50481 4.79111 30.56 1490.20 1023.258 9.45 9.43 11.552 3.50508 4.79465 30.58 1490.14 1023.282 9.75 9.73 11.537 3.50549 4.79716 30.59 1490.12 1023.298 10.05 10.03 11.516 3.51004 4.80622 30.66 1490.12 1023.351 10.35 10.33 11.495 3.51427 4.81479 30.71 1490.12 1023.402 10.65 10.63 11.474 3.51519 4.81874 30.74 1490.09 1023.427 10.95 10.93 11.456 3.51639 4.82282 30.77 1490.06 1023.452 11.25 11.23 11.414 3.51946 4.83252 30.83 1489.99 1023.511 11.55 11.53 11.361 3.52821 4.85169 30.96 1489.97 1023.622 11.85 11.82 11.292 3.53762 4.87379 31.11 1489.91 1023.752 12.15 12.12 11.245 3.53875 4.88165 31.16 1489.81 1023.800 12.45 12.42 11.230 3.53906 4.88414 31.18 1489.78 1023.817 12.75 12.72 11.220 3.53899 4.88547 31.19 1489.76 1023.826 13.05 13.02 11.216 3.53872 4.88562 31.19 1489.75 1023.829 13.35 13.32 11.213 3.53920 4.88668 31.19 1489.75 1023.836 13.65 13.62 11.209 3.53978 4.88798 31.20 1489.76 1023.845 13.95 13.92 11.207 3.54093 4.88984 31.21 1489.77 1023.857 14.25 14.21 11.206 3.54233 4.89194 31.23 1489.79 1023.870 14.55 14.51 11.203 3.54225 4.89222 31.23 1489.78 1023.873 14.85 14.81 11.205 3.54298 4.89301 31.24 1489.80 1023.878 15.15 15.11 11.207 3.54333 4.89322 31.24 1489.82 1023.880 15.45 15.41 11.206 3.54355 4.89353 31.24 1489.82 1023.883 15.75 15.71 11.205 3.54438 4.89488 31.25 1489.83 1023.892 16.05 16.01 11.205 3.54403 4.89439 31.25 1489.83 1023.891 16.35 16.30 11.175 3.54274 4.89664 31.26 1489.75 1023.907 16.51 16.46 11.165 3.54257 4.89774 31.26 1489.73 1023.915