*2026/01/16 10:37:55.83 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/24 00:56:50.000 END TIME : UTC 2025/06/24 00:57:08.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 94 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 28.01 2 Depth metres 0.15 27.96 3 Temperature 'deg C (ITS90)' 12.791 14.38 4 Conductivity S/m 3.1831 3.38079 5 Conductance:Specific S/m 4.05282 4.46986 6 Salinity PSS-78 25.58 28.4 7 Speed:Sound m/s 1491.39 1493.75 8 Density kg/m^3 1018.875 1021.444 $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 : 178 LATITUDE : 49 8.92520 N ! (deg min) LONGITUDE : 125 47.80440 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250624_005650 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:32 94 94 MERGEHDR 1.3 2026/01/16 10:35:45 94 94 HDREDIT2 3.2 2026/01/16 10:36:17 ? ? REMOVECH 8.2 2026/01/16 10:36:45 94 94 CALIB 12.1 2026/01/16 10:37:19 94 94 CLEAN 5.3 2026/01/16 10:37:55 94 94 $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 14.380 3.19476 4.05629 25.62 1493.75 1018.876 0.45 0.45 14.270 3.18310 4.05282 25.58 1493.35 1018.875 0.75 0.75 14.048 3.19246 4.08792 25.82 1492.89 1019.098 1.05 1.05 13.940 3.20511 4.11550 26.00 1492.75 1019.263 1.35 1.35 13.745 3.25375 4.19891 26.57 1492.77 1019.741 1.65 1.65 13.598 3.28239 4.25204 26.93 1492.71 1020.049 1.95 1.95 13.581 3.28963 4.26325 27.01 1492.75 1020.113 2.25 2.25 13.575 3.29196 4.26698 27.04 1492.76 1020.136 2.55 2.55 13.506 3.29355 4.27662 27.10 1492.61 1020.199 2.85 2.85 13.391 3.29559 4.29216 27.20 1492.34 1020.299 3.15 3.15 13.312 3.29764 4.30364 27.27 1492.17 1020.373 3.45 3.45 13.258 3.29907 4.31159 27.33 1492.05 1020.425 3.75 3.75 13.239 3.29929 4.31400 27.34 1492.01 1020.442 4.05 4.05 13.218 3.30002 4.31741 27.36 1491.97 1020.464 4.35 4.35 13.198 3.30002 4.31966 27.38 1491.92 1020.480 4.65 4.65 13.186 3.30016 4.32117 27.39 1491.90 1020.491 4.95 4.95 13.182 3.29972 4.32106 27.39 1491.89 1020.492 5.25 5.25 13.180 3.29968 4.32123 27.39 1491.89 1020.495 5.55 5.55 13.178 3.29967 4.32138 27.39 1491.89 1020.497 5.85 5.85 13.177 3.29925 4.32099 27.39 1491.89 1020.497 6.15 6.15 13.171 3.29935 4.32183 27.39 1491.88 1020.503 6.45 6.45 13.163 3.30038 4.32401 27.41 1491.87 1020.517 6.75 6.75 13.154 3.30130 4.32628 27.42 1491.86 1020.532 7.05 7.04 13.144 3.30220 4.32856 27.44 1491.85 1020.547 7.35 7.34 13.135 3.30417 4.33225 27.46 1491.86 1020.569 7.65 7.64 13.117 3.30537 4.33581 27.48 1491.83 1020.592 7.95 7.94 13.104 3.30986 4.34322 27.54 1491.85 1020.635 8.25 8.24 13.081 3.31291 4.34983 27.58 1491.83 1020.675 8.55 8.54 13.039 3.31668 4.35953 27.64 1491.77 1020.735 8.85 8.84 12.983 3.31952 4.36971 27.71 1491.66 1020.798 9.15 9.14 12.931 3.32347 4.38091 27.79 1491.58 1020.867 9.45 9.44 12.894 3.32438 4.38640 27.82 1491.50 1020.902 9.75 9.74 12.867 3.32610 4.39184 27.86 1491.45 1020.937 10.05 10.04 12.849 3.32779 4.39616 27.89 1491.43 1020.964 10.35 10.34 12.836 3.32900 4.39924 27.91 1491.42 1020.983 10.65 10.64 12.825 3.33038 4.40239 27.93 1491.41 1021.003 10.95 10.94 12.819 3.33165 4.40473 27.94 1491.41 1021.018 11.25 11.24 12.816 3.33245 4.40616 27.95 1491.42 1021.027 11.55 11.54 12.811 3.33306 4.40750 27.96 1491.42 1021.036 11.85 11.84 12.808 3.33295 4.40778 27.96 1491.41 1021.039 12.15 12.14 12.799 3.33281 4.40855 27.97 1491.39 1021.046 12.45 12.44 12.795 3.33401 4.41069 27.98 1491.40 1021.059 12.75 12.74 12.793 3.33417 4.41112 27.99 1491.40 1021.063 13.05 13.04 12.793 3.33520 4.41245 28.00 1491.42 1021.072 13.35 13.34 12.791 3.33552 4.41306 28.00 1491.42 1021.076 13.65 13.64 12.795 3.33622 4.41353 28.00 1491.45 1021.080 13.95 13.93 12.799 3.33627 4.41317 28.00 1491.46 1021.079 14.25 14.23 12.799 3.33697 4.41411 28.01 1491.47 1021.085 14.55 14.53 12.800 3.33690 4.41388 28.01 1491.48 1021.085 14.85 14.83 12.803 3.33722 4.41394 28.01 1491.50 1021.086 15.15 15.13 12.802 3.33706 4.41391 28.01 1491.49 1021.087 15.45 15.43 12.797 3.33695 4.41425 28.01 1491.49 1021.091 15.75 15.73 12.799 3.33818 4.41564 28.02 1491.51 1021.100 16.05 16.03 12.800 3.33802 4.41535 28.02 1491.52 1021.099 16.35 16.33 12.798 3.33808 4.41567 28.02 1491.52 1021.103 16.65 16.63 12.798 3.33922 4.41716 28.03 1491.53 1021.112 16.95 16.93 12.796 3.34065 4.41929 28.04 1491.55 1021.125 17.25 17.23 12.793 3.34322 4.42304 28.07 1491.57 1021.147 17.55 17.53 12.793 3.34454 4.42483 28.08 1491.59 1021.158 17.85 17.83 12.798 3.34594 4.42612 28.09 1491.63 1021.166 18.15 18.13 12.805 3.34695 4.42658 28.09 1491.66 1021.169 18.45 18.43 12.810 3.34875 4.42836 28.11 1491.70 1021.179 18.75 18.73 12.816 3.34860 4.42747 28.10 1491.72 1021.175 19.05 19.03 12.815 3.35585 4.43726 28.17 1491.80 1021.229 19.35 19.33 12.814 3.36084 4.44396 28.22 1491.85 1021.267 19.65 19.62 12.820 3.36353 4.44670 28.24 1491.91 1021.282 19.95 19.92 12.822 3.36756 4.45186 28.27 1491.96 1021.312 20.25 20.22 12.817 3.36875 4.45401 28.29 1491.96 1021.325 20.55 20.52 12.810 3.36878 4.45483 28.29 1491.95 1021.332 20.85 20.82 12.809 3.36932 4.45573 28.30 1491.96 1021.338 21.15 21.12 12.809 3.36887 4.45515 28.29 1491.96 1021.336 21.45 21.42 12.812 3.37126 4.45792 28.31 1492.00 1021.352 21.75 21.72 12.812 3.37264 4.45972 28.33 1492.02 1021.363 22.05 22.02 12.818 3.37352 4.46026 28.33 1492.05 1021.367 22.35 22.32 12.819 3.37404 4.46078 28.33 1492.06 1021.371 22.65 22.62 12.822 3.37522 4.46201 28.34 1492.09 1021.378 22.95 22.92 12.820 3.37474 4.46155 28.34 1492.08 1021.377 23.25 23.22 12.821 3.37518 4.46201 28.34 1492.09 1021.381 23.55 23.52 12.819 3.37561 4.46282 28.35 1492.10 1021.387 23.85 23.82 12.820 3.37683 4.46438 28.36 1492.12 1021.396 24.15 24.12 12.814 3.37614 4.46416 28.36 1492.10 1021.397 24.45 24.42 12.816 3.37570 4.46337 28.35 1492.10 1021.394 24.75 24.71 12.813 3.37619 4.46427 28.36 1492.11 1021.400 25.05 25.01 12.815 3.37762 4.46594 28.37 1492.13 1021.410 25.35 25.31 12.815 3.37746 4.46574 28.37 1492.14 1021.411 25.65 25.61 12.816 3.37863 4.46725 28.38 1492.16 1021.420 25.95 25.91 12.817 3.37810 4.46642 28.37 1492.16 1021.417 26.25 26.21 12.816 3.37874 4.46735 28.38 1492.17 1021.423 26.55 26.51 12.815 3.37946 4.46837 28.39 1492.18 1021.430 26.85 26.81 12.815 3.37943 4.46836 28.39 1492.18 1021.431 27.15 27.11 12.817 3.37997 4.46882 28.39 1492.20 1021.435 27.45 27.41 12.816 3.38034 4.46947 28.39 1492.20 1021.440 27.75 27.71 12.816 3.37979 4.46879 28.39 1492.20 1021.437 28.01 27.96 12.818 3.38079 4.46986 28.40 1492.22 1021.444