*2026/01/16 10:37:56.76 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/25 20:23:59.000 END TIME : UTC 2025/06/25 20:24:18.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 96 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 28.73 2 Depth metres 0.15 28.67 3 Temperature 'deg C (ITS90)' 9.663 17.182 4 Conductivity S/m 2.06949 3.5029 5 Conductance:Specific S/m 2.45335 5.00503 6 Salinity PSS-78 14.82 31.83 7 Speed:Sound m/s 1485.23 1494.66 8 Density kg/m^3 1010.06 1024.667 $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 : 192 LATITUDE : 49 5.53730 N ! (deg min) LONGITUDE : 124 49.30150 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250625_202359 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:32 96 96 MERGEHDR 1.3 2026/01/16 10:35:46 96 96 HDREDIT2 3.2 2026/01/16 10:36:17 ? ? REMOVECH 8.2 2026/01/16 10:36:48 96 96 CALIB 12.1 2026/01/16 10:37:20 96 96 CLEAN 5.3 2026/01/16 10:37:56 96 96 $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 10:36:48 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:20 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 17.182 2.07678 2.46168 14.88 1490.48 1010.100 0.45 0.45 17.177 2.06949 2.45335 14.82 1490.40 1010.060 0.75 0.76 17.166 2.07758 2.46358 14.89 1490.45 1010.115 1.05 1.06 17.146 2.08621 2.47495 14.97 1490.48 1010.177 1.35 1.36 17.141 2.09641 2.48736 15.05 1490.56 1010.242 1.65 1.67 17.137 2.10216 2.49443 15.09 1490.60 1010.280 1.95 1.97 17.123 2.11124 2.50605 15.17 1490.65 1010.342 2.25 2.27 17.104 2.12046 2.51815 15.25 1490.68 1010.408 2.55 2.57 17.074 2.12637 2.52692 15.31 1490.66 1010.459 2.85 2.88 17.040 2.13453 2.53867 15.39 1490.64 1010.526 3.15 3.18 17.012 2.15780 2.56806 15.58 1490.78 1010.681 3.45 3.48 16.984 2.19204 2.61060 15.86 1491.02 1010.903 3.75 3.78 16.927 2.22081 2.64844 16.11 1491.12 1011.106 4.05 4.09 16.850 2.25998 2.70007 16.45 1491.28 1011.384 4.35 4.39 16.767 2.29445 2.74669 16.76 1491.37 1011.638 4.65 4.69 16.613 2.31942 2.78688 17.03 1491.18 1011.872 4.95 4.99 16.015 2.38873 2.91205 17.85 1490.20 1012.621 5.25 5.29 14.991 2.69402 3.36825 20.90 1490.37 1015.157 5.55 5.59 14.437 3.24119 4.10934 25.99 1494.45 1019.175 5.85 5.89 13.695 3.43604 4.43984 28.26 1494.66 1021.072 6.15 6.19 13.080 3.45005 4.53002 28.85 1493.29 1021.646 6.45 6.49 12.642 3.46066 4.59685 29.28 1492.32 1022.066 6.75 6.79 12.283 3.47033 4.65401 29.66 1491.54 1022.422 7.05 7.09 12.062 3.47917 4.69372 29.92 1491.09 1022.665 7.35 7.39 11.983 3.48439 4.71077 30.03 1490.95 1022.768 7.65 7.69 11.908 3.48752 4.72457 30.12 1490.81 1022.853 7.95 7.99 11.809 3.49046 4.74138 30.23 1490.59 1022.957 8.25 8.29 11.676 3.49702 4.76745 30.40 1490.34 1023.115 8.55 8.59 11.511 3.50008 4.79319 30.56 1489.97 1023.274 8.85 8.89 11.329 3.50037 4.81757 30.72 1489.52 1023.426 9.15 9.18 11.211 3.50290 4.83674 30.84 1489.26 1023.544 9.45 9.48 11.130 3.50223 4.84666 30.90 1489.05 1023.607 9.75 9.78 11.039 3.50226 4.85904 30.98 1488.82 1023.684 10.05 10.08 10.961 3.50229 4.86956 31.04 1488.63 1023.750 10.35 10.38 10.923 3.50116 4.87320 31.07 1488.53 1023.775 10.65 10.68 10.903 3.50095 4.87558 31.08 1488.48 1023.791 10.95 10.98 10.883 3.50068 4.87797 31.10 1488.43 1023.807 11.25 11.27 10.880 3.50068 4.87825 31.10 1488.43 1023.810 11.55 11.57 10.864 3.50063 4.88040 31.11 1488.39 1023.824 11.85 11.87 10.815 3.50021 4.88658 31.15 1488.27 1023.864 12.15 12.17 10.779 3.49911 4.88990 31.17 1488.17 1023.886 12.45 12.47 10.759 3.50048 4.89459 31.20 1488.14 1023.915 12.75 12.77 10.745 3.49960 4.89519 31.20 1488.10 1023.920 13.05 13.07 10.729 3.49899 4.89651 31.21 1488.06 1023.930 13.35 13.37 10.709 3.49850 4.89865 31.22 1488.00 1023.945 13.65 13.66 10.670 3.49952 4.90540 31.26 1487.92 1023.986 13.95 13.96 10.636 3.49831 4.90839 31.28 1487.83 1024.007 14.25 14.26 10.604 3.49848 4.91308 31.31 1487.75 1024.036 14.55 14.56 10.545 3.49713 4.91932 31.35 1487.59 1024.077 14.85 14.86 10.491 3.49527 4.92409 31.37 1487.44 1024.108 15.15 15.16 10.465 3.49307 4.92468 31.37 1487.35 1024.115 15.45 15.46 10.437 3.49141 4.92624 31.38 1487.26 1024.127 15.75 15.75 10.405 3.49054 4.92951 31.40 1487.17 1024.148 16.05 16.05 10.352 3.48856 4.93403 31.43 1487.02 1024.178 16.35 16.35 10.311 3.48834 4.93950 31.46 1486.92 1024.213 16.65 16.65 10.290 3.48813 4.94211 31.48 1486.86 1024.230 16.95 16.95 10.267 3.48751 4.94439 31.49 1486.81 1024.245 17.25 17.25 10.251 3.48676 4.94567 31.50 1486.76 1024.255 17.55 17.55 10.232 3.48625 4.94763 31.51 1486.71 1024.268 17.85 17.84 10.217 3.48614 4.94949 31.52 1486.67 1024.281 18.15 18.14 10.207 3.48604 4.95074 31.53 1486.65 1024.289 18.45 18.44 10.199 3.48588 4.95161 31.53 1486.64 1024.296 18.75 18.74 10.195 3.48589 4.95225 31.54 1486.63 1024.301 19.05 19.04 10.189 3.48583 4.95301 31.54 1486.62 1024.307 19.35 19.34 10.183 3.48513 4.95287 31.54 1486.60 1024.308 19.65 19.64 10.176 3.48557 4.95449 31.55 1486.59 1024.319 19.95 19.93 10.168 3.48501 4.95481 31.55 1486.57 1024.322 20.25 20.23 10.161 3.48516 4.95600 31.56 1486.56 1024.330 20.55 20.53 10.155 3.48453 4.95598 31.56 1486.54 1024.332 20.85 20.83 10.147 3.48423 4.95663 31.56 1486.52 1024.337 21.15 21.13 10.137 3.48394 4.95770 31.57 1486.49 1024.345 21.45 21.43 10.128 3.48311 4.95779 31.56 1486.47 1024.348 21.75 21.73 10.114 3.48358 4.96044 31.58 1486.44 1024.364 22.05 22.02 10.090 3.48291 4.96282 31.60 1486.38 1024.380 22.35 22.32 10.073 3.48124 4.96280 31.59 1486.32 1024.383 22.65 22.62 10.056 3.48010 4.96366 31.60 1486.27 1024.390 22.95 22.92 10.025 3.47994 4.96778 31.62 1486.19 1024.416 23.25 23.22 9.993 3.47915 4.97121 31.64 1486.10 1024.438 23.55 23.52 9.975 3.47767 4.97161 31.64 1486.04 1024.443 23.85 23.82 9.957 3.47763 4.97420 31.66 1486.00 1024.459 24.15 24.11 9.941 3.47709 4.97567 31.67 1485.96 1024.470 24.45 24.41 9.925 3.47728 4.97816 31.68 1485.93 1024.486 24.75 24.71 9.911 3.47683 4.97962 31.69 1485.89 1024.496 25.05 25.01 9.894 3.47643 4.98139 31.70 1485.84 1024.508 25.35 25.31 9.878 3.47581 4.98289 31.71 1485.80 1024.518 25.65 25.61 9.867 3.47431 4.98230 31.70 1485.76 1024.517 25.95 25.91 9.854 3.47406 4.98373 31.71 1485.73 1024.527 26.25 26.20 9.844 3.47313 4.98376 31.71 1485.69 1024.529 26.55 26.50 9.835 3.47315 4.98511 31.72 1485.68 1024.538 26.85 26.80 9.821 3.47212 4.98565 31.72 1485.63 1024.543 27.15 27.10 9.809 3.47253 4.98802 31.73 1485.61 1024.559 27.45 27.40 9.783 3.47006 4.98811 31.73 1485.52 1024.562 27.75 27.70 9.752 3.46984 4.99229 31.76 1485.44 1024.588 28.05 27.99 9.724 3.46881 4.99483 31.77 1485.36 1024.605 28.35 28.29 9.689 3.46768 4.99825 31.79 1485.26 1024.627 28.73 28.67 9.663 3.46980 5.00503 31.83 1485.23 1024.667