*2026/01/16 10:37:55.78 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/24 00:03:52.000 END TIME : UTC 2025/06/24 00:04:14.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 111 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 33.03 2 Depth metres 0.15 33 3 Temperature 'deg C (ITS90)' 11.484 17.454 4 Conductivity S/m 2.34773 3.30481 5 Conductance:Specific S/m 2.77204 4.42621 6 Salinity PSS-78 16.95 28.05 7 Speed:Sound m/s 1486.21 1495.58 8 Density kg/m^3 1011.64 1021.285 $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 : 177 LATITUDE : 49 7.92740 N ! (deg min) LONGITUDE : 125 42.22350 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250624_000352 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:31 111 111 MERGEHDR 1.3 2026/01/16 10:35:45 111 111 HDREDIT2 3.2 2026/01/16 10:36:17 ? ? REMOVECH 8.2 2026/01/16 10:36:45 111 111 CALIB 12.1 2026/01/16 10:37:19 111 111 CLEAN 5.3 2026/01/16 10:37:55 111 111 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:17 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 10:36:45 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:19 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 17.454 2.39970 2.82625 17.31 1494.09 1011.895 0.45 0.45 17.347 2.34773 2.77204 16.95 1493.35 1011.640 0.75 0.76 16.663 2.38168 2.85824 17.51 1491.83 1012.211 1.05 1.06 15.377 2.92024 3.61624 22.62 1493.55 1016.379 1.35 1.36 14.972 3.11995 3.90266 24.58 1494.50 1017.967 1.65 1.66 15.123 3.18863 3.97353 25.08 1495.58 1018.322 1.95 1.96 14.908 3.21619 4.02948 25.46 1495.32 1018.658 2.25 2.26 14.459 3.23968 4.10507 25.96 1494.44 1019.135 2.55 2.56 14.197 3.23887 4.13157 26.13 1493.78 1019.318 2.85 2.86 13.953 3.23646 4.15426 26.27 1493.14 1019.477 3.15 3.16 13.684 3.23170 4.17701 26.41 1492.41 1019.639 3.45 3.46 13.528 3.23041 4.19232 26.51 1492.00 1019.744 3.75 3.76 13.298 3.22812 4.21444 26.65 1491.40 1019.896 4.05 4.06 13.041 3.22121 4.23391 26.77 1490.66 1020.036 4.35 4.36 12.827 3.21307 4.24708 26.84 1490.03 1020.135 4.65 4.66 12.658 3.20855 4.26008 26.92 1489.55 1020.227 4.95 4.96 12.517 3.20314 4.26890 26.97 1489.13 1020.293 5.25 5.26 12.420 3.19958 4.27526 27.01 1488.84 1020.341 5.55 5.56 12.280 3.19635 4.28696 27.08 1488.44 1020.421 5.85 5.86 12.157 3.19388 4.29785 27.14 1488.10 1020.495 6.15 6.16 12.057 3.19309 4.30840 27.21 1487.83 1020.565 6.45 6.46 11.994 3.19306 4.31568 27.25 1487.67 1020.612 6.75 6.76 11.948 3.19195 4.31947 27.28 1487.54 1020.639 7.05 7.06 11.921 3.18910 4.31877 27.27 1487.44 1020.640 7.35 7.35 11.900 3.18631 4.31754 27.26 1487.36 1020.637 7.65 7.65 11.861 3.18606 4.32173 27.28 1487.26 1020.665 7.95 7.95 11.813 3.18503 4.32597 27.31 1487.13 1020.694 8.25 8.25 11.774 3.18495 4.33049 27.34 1487.03 1020.724 8.55 8.55 11.730 3.18355 4.33369 27.36 1486.90 1020.747 8.85 8.85 11.705 3.18277 4.33559 27.37 1486.83 1020.761 9.15 9.15 11.684 3.18309 4.33854 27.39 1486.78 1020.781 9.45 9.45 11.661 3.18435 4.34293 27.41 1486.74 1020.808 9.75 9.75 11.640 3.18491 4.34626 27.44 1486.70 1020.829 10.05 10.05 11.617 3.18466 4.34862 27.45 1486.64 1020.846 10.35 10.35 11.611 3.18515 4.34997 27.46 1486.63 1020.855 10.65 10.65 11.614 3.18700 4.35216 27.47 1486.67 1020.868 10.95 10.95 11.608 3.18680 4.35263 27.48 1486.65 1020.872 11.25 11.25 11.604 3.18661 4.35276 27.48 1486.65 1020.875 11.55 11.55 11.598 3.18709 4.35416 27.49 1486.64 1020.884 11.85 11.85 11.582 3.18706 4.35600 27.50 1486.60 1020.897 12.15 12.15 11.562 3.18416 4.35446 27.48 1486.52 1020.892 12.45 12.45 11.536 3.18270 4.35562 27.49 1486.44 1020.902 12.75 12.75 11.518 3.18041 4.35462 27.48 1486.37 1020.900 13.05 13.05 11.488 3.17483 4.35046 27.45 1486.24 1020.882 13.35 13.35 11.484 3.17372 4.34951 27.44 1486.21 1020.878 13.65 13.65 11.490 3.17672 4.35283 27.47 1486.27 1020.897 13.95 13.95 11.489 3.18274 4.36122 27.52 1486.34 1020.944 14.25 14.24 11.492 3.18638 4.36589 27.56 1486.40 1020.970 14.55 14.54 11.515 3.18791 4.36524 27.55 1486.48 1020.965 14.85 14.84 11.539 3.18912 4.36405 27.55 1486.56 1020.958 15.15 15.14 11.541 3.19290 4.36896 27.58 1486.61 1020.985 15.45 15.44 11.576 3.19165 4.36307 27.54 1486.70 1020.951 15.75 15.74 11.608 3.20252 4.37411 27.62 1486.91 1021.009 16.05 16.04 11.624 3.20625 4.37725 27.65 1487.00 1021.026 16.35 16.34 11.674 3.21096 4.37771 27.66 1487.19 1021.024 16.65 16.64 11.741 3.22358 4.38693 27.73 1487.51 1021.069 16.95 16.94 11.781 3.23337 4.39548 27.79 1487.73 1021.112 17.25 17.24 11.808 3.23678 4.39689 27.80 1487.85 1021.118 17.55 17.54 11.842 3.23931 4.39625 27.80 1487.97 1021.112 17.85 17.84 11.869 3.24031 4.39434 27.79 1488.06 1021.100 18.15 18.14 11.886 3.24072 4.39284 27.78 1488.11 1021.091 18.45 18.44 11.899 3.24238 4.39354 27.79 1488.17 1021.095 18.75 18.74 11.909 3.24285 4.39299 27.78 1488.21 1021.092 19.05 19.04 11.919 3.24461 4.39422 27.79 1488.26 1021.099 19.35 19.34 11.933 3.24607 4.39450 27.80 1488.31 1021.101 19.65 19.64 11.955 3.24907 4.39594 27.81 1488.41 1021.107 19.95 19.94 11.979 3.25246 4.39771 27.82 1488.52 1021.116 20.25 20.24 12.001 3.25504 4.39854 27.83 1488.61 1021.119 20.55 20.53 12.019 3.25681 4.39882 27.83 1488.68 1021.120 20.85 20.83 12.033 3.25889 4.39998 27.84 1488.74 1021.126 21.15 21.13 12.043 3.26327 4.40475 27.88 1488.82 1021.152 21.45 21.43 12.046 3.26378 4.40505 27.88 1488.84 1021.154 21.75 21.73 12.061 3.26528 4.40525 27.88 1488.90 1021.155 22.05 22.03 12.071 3.26732 4.40685 27.89 1488.96 1021.164 22.35 22.33 12.091 3.27045 4.40873 27.91 1489.05 1021.173 22.65 22.63 12.109 3.27279 4.40973 27.92 1489.12 1021.178 22.95 22.93 12.118 3.27342 4.40942 27.91 1489.16 1021.176 23.25 23.23 12.134 3.27555 4.41045 27.92 1489.23 1021.182 23.55 23.53 12.145 3.27567 4.40932 27.92 1489.26 1021.176 23.85 23.83 12.149 3.27626 4.40961 27.92 1489.29 1021.178 24.15 24.13 12.156 3.27659 4.40920 27.92 1489.31 1021.176 24.45 24.43 12.163 3.27732 4.40944 27.92 1489.34 1021.178 24.75 24.73 12.175 3.27947 4.41082 27.93 1489.40 1021.185 25.05 25.03 12.184 3.28058 4.41127 27.93 1489.44 1021.188 25.35 25.33 12.187 3.27984 4.40994 27.92 1489.45 1021.182 25.65 25.63 12.188 3.28067 4.41094 27.93 1489.47 1021.188 25.95 25.93 12.189 3.28096 4.41122 27.93 1489.48 1021.191 26.25 26.22 12.195 3.28155 4.41131 27.93 1489.50 1021.192 26.55 26.52 12.202 3.28221 4.41128 27.93 1489.53 1021.192 26.85 26.82 12.205 3.28283 4.41179 27.94 1489.55 1021.196 27.15 27.12 12.208 3.28388 4.41288 27.94 1489.58 1021.203 27.45 27.42 12.210 3.28344 4.41209 27.94 1489.58 1021.200 27.75 27.72 12.218 3.28521 4.41350 27.95 1489.63 1021.208 28.05 28.02 12.226 3.28643 4.41412 27.95 1489.67 1021.212 28.35 28.32 12.230 3.28597 4.41303 27.95 1489.68 1021.206 28.65 28.62 12.245 3.28780 4.41379 27.95 1489.74 1021.210 28.95 28.92 12.253 3.29122 4.41736 27.98 1489.80 1021.230 29.25 29.22 12.260 3.29243 4.41814 27.99 1489.84 1021.235 29.55 29.52 12.261 3.29567 4.42235 28.01 1489.89 1021.259 29.85 29.82 12.264 3.29747 4.42442 28.03 1489.92 1021.271 30.15 30.12 12.275 3.29814 4.42406 28.03 1489.96 1021.269 30.45 30.42 12.283 3.29869 4.42385 28.03 1489.99 1021.268 30.75 30.72 12.293 3.29954 4.42381 28.03 1490.03 1021.268 31.05 31.02 12.299 3.30006 4.42384 28.03 1490.05 1021.269 31.35 31.32 12.302 3.30109 4.42488 28.04 1490.08 1021.275 31.65 31.62 12.312 3.30084 4.42328 28.03 1490.11 1021.267 31.95 31.91 12.316 3.30162 4.42392 28.03 1490.13 1021.271 32.25 32.21 12.318 3.30180 4.42391 28.03 1490.14 1021.272 32.55 32.51 12.325 3.30248 4.42394 28.03 1490.17 1021.273 32.85 32.81 12.332 3.30481 4.42621 28.05 1490.22 1021.285 33.03 33.00 12.416 3.28003 4.38314 27.75 1490.17 1021.043