*2026/01/16 10:37:57.71 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/27 00:31:51.000 END TIME : UTC 2025/06/27 00:32:04.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 67 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.02 2 Depth metres 0.15 19.93 3 Temperature 'deg C (ITS90)' 9.983 13.593 4 Conductivity S/m 3.46831 3.58383 5 Conductance:Specific S/m 4.61972 4.95932 6 Salinity PSS-78 29.49 31.56 7 Speed:Sound m/s 1485.8 1495.76 8 Density kg/m^3 1022.077 1024.359 $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 : 214 LATITUDE : 48 51.15030 N ! (deg min) LONGITUDE : 125 11.67800 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250627_003151 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:33 67 67 MERGEHDR 1.3 2026/01/16 10:35:48 67 67 HDREDIT2 3.2 2026/01/16 10:36:18 ? ? REMOVECH 8.2 2026/01/16 10:36:51 67 67 CALIB 12.1 2026/01/16 10:37:21 67 67 CLEAN 5.3 2026/01/16 10:37:57 67 67 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:18 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 10:36:51 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:21 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 13.593 3.57044 4.62578 29.57 1495.76 1022.077 0.45 0.45 13.172 3.52691 4.61972 29.49 1494.27 1022.100 0.75 0.75 12.812 3.58058 4.73465 30.28 1493.98 1022.777 1.05 1.05 12.724 3.58007 4.74503 30.34 1493.77 1022.846 1.35 1.35 12.623 3.58383 4.76276 30.46 1493.57 1022.956 1.65 1.64 12.315 3.58321 4.80136 30.70 1492.81 1023.206 1.95 1.94 11.905 3.55000 4.80968 30.72 1491.42 1023.297 2.25 2.24 11.634 3.51913 4.80310 30.65 1490.40 1023.290 2.55 2.54 11.464 3.50224 4.80229 30.63 1489.78 1023.303 2.85 2.84 11.146 3.49745 4.83795 30.84 1488.93 1023.530 3.15 3.14 10.897 3.49549 4.86878 31.03 1488.28 1023.722 3.45 3.44 10.811 3.49524 4.88010 31.11 1488.06 1023.793 3.75 3.74 10.724 3.49405 4.89038 31.17 1487.83 1023.858 4.05 4.04 10.610 3.49351 4.90524 31.26 1487.54 1023.950 4.35 4.33 10.530 3.49316 4.91575 31.32 1487.34 1024.015 4.65 4.63 10.491 3.49297 4.92088 31.36 1487.25 1024.048 4.95 4.93 10.452 3.49259 4.92575 31.39 1487.15 1024.079 5.25 5.23 10.416 3.49161 4.92938 31.41 1487.05 1024.103 5.55 5.53 10.378 3.49045 4.93314 31.43 1486.94 1024.127 5.85 5.83 10.341 3.48802 4.93478 31.44 1486.82 1024.140 6.15 6.13 10.322 3.48592 4.93445 31.43 1486.75 1024.141 6.45 6.42 10.291 3.48319 4.93490 31.43 1486.65 1024.147 6.75 6.72 10.273 3.48179 4.93545 31.43 1486.59 1024.153 7.05 7.02 10.261 3.48003 4.93472 31.42 1486.54 1024.151 7.35 7.32 10.227 3.47929 4.93833 31.45 1486.45 1024.174 7.65 7.62 10.213 3.47856 4.93927 31.45 1486.41 1024.182 7.95 7.92 10.201 3.47874 4.94127 31.46 1486.39 1024.195 8.25 8.22 10.175 3.47720 4.94268 31.47 1486.31 1024.206 8.55 8.51 10.139 3.47706 4.94761 31.50 1486.22 1024.236 8.85 8.81 10.122 3.47491 4.94689 31.49 1486.15 1024.235 9.15 9.11 10.109 3.47464 4.94833 31.50 1486.12 1024.245 9.45 9.41 10.096 3.47305 4.94792 31.50 1486.07 1024.245 9.75 9.71 10.078 3.47283 4.95017 31.51 1486.03 1024.260 10.05 10.01 10.053 3.47284 4.95373 31.53 1485.97 1024.282 10.35 10.31 10.046 3.47146 4.95274 31.52 1485.94 1024.278 10.65 10.60 10.038 3.46974 4.95140 31.51 1485.90 1024.273 10.95 10.90 10.026 3.46929 4.95247 31.52 1485.87 1024.281 11.25 11.20 10.016 3.46960 4.95432 31.53 1485.85 1024.293 11.55 11.50 10.008 3.46838 4.95367 31.52 1485.82 1024.291 11.85 11.80 10.002 3.46883 4.95517 31.53 1485.82 1024.301 12.15 12.10 9.997 3.46900 4.95607 31.54 1485.81 1024.307 12.45 12.40 9.994 3.46831 4.95556 31.54 1485.80 1024.306 12.75 12.69 9.991 3.46893 4.95687 31.54 1485.81 1024.315 13.05 12.99 9.991 3.46905 4.95713 31.55 1485.81 1024.318 13.35 13.29 9.991 3.46936 4.95745 31.55 1485.82 1024.321 13.65 13.59 9.989 3.46927 4.95764 31.55 1485.82 1024.323 13.95 13.89 9.988 3.46943 4.95797 31.55 1485.82 1024.326 14.25 14.19 9.989 3.46951 4.95807 31.55 1485.83 1024.328 14.55 14.49 9.989 3.46953 4.95807 31.55 1485.83 1024.329 14.85 14.78 9.989 3.46966 4.95819 31.55 1485.84 1024.331 15.15 15.08 9.991 3.47009 4.95850 31.56 1485.86 1024.334 15.45 15.38 9.993 3.46979 4.95790 31.55 1485.86 1024.332 15.75 15.68 9.993 3.47026 4.95854 31.56 1485.87 1024.337 16.05 15.98 9.995 3.47036 4.95839 31.55 1485.88 1024.337 16.35 16.28 9.995 3.46938 4.95696 31.54 1485.88 1024.330 16.65 16.58 9.995 3.47046 4.95858 31.56 1485.89 1024.341 16.95 16.87 9.997 3.47023 4.95791 31.55 1485.90 1024.338 17.25 17.17 9.997 3.47092 4.95884 31.56 1485.92 1024.344 17.55 17.47 9.995 3.47024 4.95825 31.55 1485.91 1024.343 17.85 17.77 9.994 3.47027 4.95833 31.55 1485.91 1024.344 18.15 18.07 9.996 3.46994 4.95761 31.55 1485.92 1024.341 18.45 18.37 9.996 3.46999 4.95766 31.55 1485.92 1024.343 18.75 18.67 9.995 3.47022 4.95813 31.55 1485.93 1024.347 19.05 18.96 9.994 3.47078 4.95917 31.56 1485.93 1024.354 19.35 19.26 9.991 3.47047 4.95911 31.56 1485.93 1024.355 19.65 19.56 9.987 3.46980 4.95876 31.55 1485.91 1024.355 20.02 19.93 9.983 3.46985 4.95932 31.56 1485.91 1024.359