*2026/01/16 10:37:57.76 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/27 01:03:53.000 END TIME : UTC 2025/06/27 01:04:09.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 81 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 24.11 2 Depth metres 0.15 24 3 Temperature 'deg C (ITS90)' 9.157 14.428 4 Conductivity S/m 3.43899 3.58517 5 Conductance:Specific S/m 4.49037 5.03615 6 Salinity PSS-78 28.66 31.99 7 Speed:Sound m/s 1483.45 1497.62 8 Density kg/m^3 1021.248 1024.842 $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 : 215 LATITUDE : 48 48.70450 N ! (deg min) LONGITUDE : 125 11.42770 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250627_010353 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:33 81 81 MERGEHDR 1.3 2026/01/16 10:35:48 81 81 HDREDIT2 3.2 2026/01/16 10:36:18 ? ? REMOVECH 8.2 2026/01/16 10:36:51 81 81 CALIB 12.1 2026/01/16 10:37:21 81 81 CLEAN 5.3 2026/01/16 10:37:57 81 81 $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 14.428 3.55626 4.50983 28.81 1497.62 1021.323 0.45 0.45 14.226 3.52274 4.49037 28.66 1496.79 1021.248 0.75 0.75 13.827 3.50408 4.51245 28.78 1495.62 1021.427 1.05 1.05 13.403 3.51897 4.58168 29.24 1494.75 1021.865 1.35 1.35 13.359 3.50811 4.57270 29.17 1494.53 1021.823 1.65 1.65 13.199 3.56917 4.67176 29.86 1494.81 1022.387 1.95 1.95 12.839 3.58517 4.73742 30.30 1494.12 1022.794 2.25 2.24 12.608 3.57509 4.75308 30.39 1493.44 1022.909 2.55 2.54 12.388 3.57366 4.77915 30.55 1492.89 1023.079 2.85 2.84 12.167 3.56243 4.79241 30.63 1492.23 1023.178 3.15 3.14 12.008 3.55877 4.80807 30.72 1491.80 1023.282 3.45 3.44 11.876 3.55363 4.81837 30.78 1491.42 1023.354 3.75 3.74 11.743 3.54850 4.82886 30.84 1491.03 1023.427 4.05 4.04 11.647 3.54557 4.83749 30.89 1490.76 1023.485 4.35 4.34 11.532 3.54307 4.84931 30.97 1490.45 1023.563 4.65 4.64 11.441 3.54265 4.86081 31.04 1490.23 1023.636 4.95 4.93 11.378 3.53930 4.86466 31.06 1490.03 1023.664 5.25 5.23 11.306 3.53800 4.87251 31.11 1489.84 1023.716 5.55 5.53 11.240 3.53337 4.87497 31.12 1489.63 1023.736 5.85 5.83 11.128 3.53032 4.88583 31.18 1489.32 1023.807 6.15 6.13 10.984 3.52135 4.89301 31.21 1488.85 1023.861 6.45 6.43 10.908 3.51053 4.88820 31.17 1488.54 1023.842 6.75 6.73 10.815 3.50352 4.89109 31.18 1488.23 1023.867 7.05 7.03 10.702 3.49849 4.89958 31.23 1487.88 1023.924 7.35 7.32 10.595 3.49674 4.91190 31.30 1487.60 1024.002 7.65 7.62 10.495 3.49299 4.92046 31.35 1487.30 1024.058 7.95 7.92 10.402 3.48889 4.92751 31.39 1487.02 1024.105 8.25 8.22 10.331 3.48553 4.93261 31.42 1486.81 1024.139 8.55 8.52 10.265 3.48362 4.93924 31.46 1486.62 1024.182 8.85 8.82 10.209 3.48158 4.94415 31.48 1486.46 1024.214 9.15 9.12 10.168 3.48046 4.94832 31.51 1486.34 1024.241 9.45 9.41 10.135 3.47841 4.95006 31.52 1486.24 1024.254 9.75 9.71 10.091 3.47597 4.95273 31.53 1486.10 1024.273 10.05 10.01 10.050 3.47371 4.95542 31.54 1485.97 1024.292 10.35 10.31 10.022 3.47268 4.95783 31.56 1485.89 1024.308 10.65 10.61 9.987 3.47159 4.96124 31.58 1485.79 1024.330 10.95 10.91 9.955 3.47055 4.96434 31.59 1485.70 1024.351 11.25 11.21 9.925 3.46947 4.96708 31.61 1485.62 1024.369 11.55 11.50 9.891 3.46813 4.96992 31.62 1485.52 1024.388 11.85 11.80 9.847 3.46708 4.97467 31.65 1485.40 1024.418 12.15 12.10 9.808 3.46399 4.97591 31.66 1485.26 1024.429 12.45 12.40 9.765 3.46142 4.97830 31.67 1485.13 1024.446 12.75 12.70 9.721 3.45960 4.98207 31.69 1484.99 1024.470 13.05 13.00 9.692 3.45867 4.98484 31.70 1484.91 1024.488 13.35 13.30 9.662 3.45730 4.98710 31.71 1484.83 1024.504 13.65 13.59 9.633 3.45652 4.99021 31.73 1484.74 1024.524 13.95 13.89 9.615 3.45559 4.99148 31.74 1484.69 1024.533 14.25 14.19 9.605 3.45594 4.99343 31.75 1484.67 1024.546 14.55 14.49 9.593 3.45434 4.99276 31.75 1484.63 1024.544 14.85 14.79 9.577 3.45332 4.99370 31.75 1484.58 1024.551 15.15 15.09 9.560 3.45313 4.99580 31.76 1484.54 1024.565 15.45 15.38 9.544 3.45211 4.99674 31.77 1484.49 1024.572 15.75 15.68 9.517 3.45151 4.99971 31.78 1484.42 1024.591 16.05 15.98 9.501 3.45054 5.00069 31.79 1484.37 1024.599 16.35 16.28 9.486 3.44949 5.00131 31.79 1484.32 1024.604 16.65 16.58 9.471 3.44908 5.00290 31.80 1484.28 1024.615 16.95 16.88 9.447 3.44839 5.00535 31.81 1484.22 1024.631 17.25 17.18 9.421 3.44718 5.00733 31.82 1484.14 1024.645 17.55 17.47 9.400 3.44677 5.00984 31.84 1484.08 1024.661 17.85 17.77 9.382 3.44626 5.01166 31.85 1484.04 1024.673 18.15 18.07 9.362 3.44541 5.01339 31.86 1483.98 1024.685 18.45 18.37 9.339 3.44453 5.01550 31.87 1483.91 1024.699 18.75 18.67 9.321 3.44414 5.01755 31.88 1483.86 1024.713 19.05 18.97 9.298 3.44306 5.01931 31.89 1483.80 1024.725 19.35 19.26 9.273 3.44235 5.02202 31.91 1483.73 1024.742 19.65 19.56 9.246 3.44200 5.02543 31.93 1483.66 1024.763 19.95 19.86 9.222 3.44076 5.02717 31.93 1483.58 1024.775 20.25 20.16 9.207 3.44020 5.02845 31.94 1483.54 1024.784 20.55 20.46 9.196 3.43987 5.02971 31.95 1483.51 1024.793 20.85 20.76 9.183 3.43903 5.03028 31.95 1483.48 1024.798 21.15 21.06 9.177 3.43989 5.03247 31.96 1483.47 1024.812 21.45 21.35 9.172 3.44050 5.03412 31.98 1483.47 1024.822 21.75 21.65 9.171 3.43947 5.03277 31.97 1483.46 1024.816 22.05 21.95 9.166 3.44012 5.03442 31.98 1483.46 1024.827 22.35 22.25 9.162 3.44095 5.03615 31.99 1483.47 1024.838 22.65 22.55 9.161 3.43909 5.03368 31.97 1483.45 1024.825 22.95 22.85 9.159 3.43992 5.03519 31.98 1483.46 1024.835 23.25 23.14 9.160 3.43918 5.03386 31.97 1483.46 1024.829 23.55 23.44 9.160 3.43899 5.03367 31.97 1483.46 1024.829 23.85 23.74 9.157 3.43967 5.03510 31.98 1483.46 1024.838 24.11 24.00 9.186 3.44306 5.03573 31.99 1483.59 1024.842