*2026/01/16 09:57:48.98 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/04/23 23:04:19.000 END TIME : UTC 2024/04/23 23:04:32.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 66 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 19.61 2 Depth metres 0.15 19.54 3 Temperature 'deg C (ITS90)' 9.975 11.896 4 Conductivity S/m 3.30711 3.46687 5 Conductance:Specific S/m 4.48183 4.95507 6 Salinity PSS-78 28.41 31.53 7 Speed:Sound m/s 1485.58 1488.83 8 Density kg/m^3 1021.498 1024.334 $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 : 81 LATITUDE : 48 56.46710 N ! (deg min) LONGITUDE : 125 15.87100 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240423_230419 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 08:59:57 66 66 MERGEHDR 1.3 2026/01/16 09:53:49 66 66 HDREDIT2 3.2 2026/01/16 09:55:03 ? ? REMOVECH 8.2 2026/01/16 09:56:15 66 66 CALIB 12.1 2026/01/16 09:56:48 66 66 CLEAN 5.3 2026/01/16 09:57:48 66 66 $END $REMARKS -HEADER EDITS: 2026/01/16 09:55:03 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 09:56:15 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 11.868 3.30711 4.48506 28.43 1488.53 1021.518 0.45 0.45 11.896 3.30721 4.48183 28.41 1488.61 1021.498 0.75 0.75 11.744 3.31023 4.50440 28.55 1488.25 1021.638 1.05 1.05 11.692 3.31878 4.52250 28.68 1488.22 1021.744 1.35 1.35 11.678 3.32867 4.53768 28.78 1488.30 1021.829 1.65 1.65 11.693 3.33167 4.53988 28.80 1488.38 1021.841 1.95 1.95 11.727 3.33347 4.53819 28.79 1488.49 1021.829 2.25 2.24 11.726 3.34579 4.55509 28.91 1488.64 1021.923 2.55 2.54 11.690 3.36977 4.59222 29.17 1488.82 1022.130 2.85 2.84 11.619 3.36958 4.60082 29.22 1488.65 1022.185 3.15 3.14 11.608 3.36077 4.59017 29.14 1488.52 1022.130 3.45 3.44 11.646 3.36620 4.59282 29.17 1488.69 1022.142 3.75 3.74 11.608 3.38369 4.62155 29.36 1488.79 1022.304 4.05 4.04 11.586 3.39112 4.63441 29.45 1488.83 1022.377 4.35 4.34 11.561 3.39027 4.63642 29.46 1488.76 1022.392 4.65 4.64 11.506 3.39098 4.64447 29.52 1488.63 1022.443 4.95 4.94 11.422 3.38897 4.65236 29.56 1488.40 1022.495 5.25 5.24 11.264 3.38750 4.67058 29.67 1487.98 1022.611 5.55 5.54 11.135 3.38929 4.68976 29.80 1487.67 1022.729 5.85 5.83 11.061 3.39096 4.70171 29.87 1487.51 1022.802 6.15 6.13 10.988 3.39574 4.71785 29.98 1487.38 1022.899 6.45 6.43 10.948 3.39647 4.72419 30.02 1487.29 1022.938 6.75 6.73 10.903 3.39780 4.73189 30.07 1487.20 1022.985 7.05 7.03 10.866 3.39894 4.73833 30.11 1487.12 1023.025 7.35 7.33 10.853 3.40573 4.74963 30.19 1487.17 1023.089 7.65 7.63 10.833 3.41111 4.75971 30.26 1487.19 1023.147 7.95 7.93 10.796 3.41284 4.76708 30.30 1487.12 1023.192 8.25 8.23 10.750 3.42703 4.79309 30.48 1487.17 1023.340 8.55 8.52 10.692 3.43554 4.81280 30.61 1487.13 1023.454 8.85 8.82 10.647 3.44291 4.82912 30.72 1487.11 1023.549 9.15 9.12 10.606 3.45728 4.85485 30.90 1487.18 1023.694 9.45 9.42 10.582 3.45751 4.85853 30.92 1487.13 1023.718 9.75 9.72 10.563 3.45821 4.86213 30.95 1487.09 1023.740 10.05 10.02 10.529 3.45724 4.86544 30.97 1487.00 1023.762 10.35 10.32 10.481 3.45449 4.86808 30.98 1486.85 1023.782 10.65 10.62 10.425 3.45089 4.87069 30.99 1486.66 1023.802 10.95 10.91 10.368 3.44406 4.86894 30.97 1486.44 1023.798 11.25 11.21 10.307 3.44224 4.87475 31.00 1486.27 1023.835 11.55 11.51 10.242 3.44191 4.88322 31.06 1486.10 1023.888 11.85 11.81 10.204 3.44214 4.88882 31.09 1486.01 1023.922 12.15 12.11 10.167 3.44262 4.89461 31.13 1485.93 1023.958 12.45 12.41 10.144 3.44208 4.89715 31.14 1485.86 1023.975 12.75 12.71 10.117 3.44311 4.90233 31.18 1485.81 1024.006 13.05 13.01 10.098 3.44177 4.90307 31.18 1485.75 1024.013 13.35 13.30 10.082 3.44275 4.90677 31.20 1485.73 1024.036 13.65 13.60 10.064 3.44264 4.90911 31.22 1485.68 1024.051 13.95 13.90 10.059 3.44371 4.91134 31.23 1485.69 1024.065 14.25 14.20 10.041 3.44443 4.91483 31.25 1485.66 1024.087 14.55 14.50 10.021 3.44475 4.91812 31.27 1485.61 1024.107 14.85 14.80 10.005 3.44458 4.92014 31.29 1485.58 1024.121 15.15 15.10 9.997 3.44606 4.92342 31.31 1485.58 1024.141 15.45 15.39 9.993 3.44789 4.92649 31.33 1485.60 1024.159 15.75 15.69 9.986 3.44995 4.93044 31.36 1485.61 1024.182 16.05 15.99 9.982 3.45308 4.93556 31.39 1485.64 1024.212 16.35 16.29 9.989 3.45787 4.94134 31.43 1485.72 1024.245 16.65 16.59 9.975 3.46126 4.94818 31.48 1485.73 1024.285 16.95 16.89 9.980 3.46326 4.95040 31.50 1485.77 1024.298 17.25 17.19 9.977 3.46357 4.95115 31.50 1485.78 1024.303 17.55 17.48 9.982 3.46415 4.95129 31.50 1485.80 1024.305 17.85 17.78 9.983 3.46470 4.95197 31.51 1485.81 1024.310 18.15 18.08 9.986 3.46459 4.95133 31.50 1485.83 1024.307 18.45 18.38 9.983 3.46470 4.95199 31.51 1485.82 1024.313 18.75 18.68 9.979 3.46475 4.95255 31.51 1485.82 1024.317 19.05 18.98 9.979 3.46521 4.95332 31.52 1485.83 1024.323 19.35 19.28 9.984 3.46614 4.95397 31.52 1485.86 1024.327 19.61 19.54 9.983 3.46687 4.95507 31.53 1485.87 1024.334