*2026/01/16 10:37:58.34 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/22 20:14:57.000 END TIME : UTC 2025/07/22 20:15:09.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 61 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.24 2 Depth metres 0.15 18.15 3 Temperature 'deg C (ITS90)' 9.744 12.87 4 Conductivity S/m 3.50805 3.71843 5 Conductance:Specific S/m 4.87905 5.05159 6 Salinity PSS-78 31.3 32.18 7 Speed:Sound m/s 1485.77 1495.53 8 Density kg/m^3 1023.576 1024.876 $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 : 229 LATITUDE : 49 49.39460 N ! (deg min) LONGITUDE : 127 2.27620 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250722_201457 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:34 61 61 MERGEHDR 1.3 2026/01/16 10:35:48 61 61 HDREDIT2 3.2 2026/01/16 10:36:19 ? ? REMOVECH 8.2 2026/01/16 10:36:52 61 61 CALIB 12.1 2026/01/16 10:37:22 61 61 CLEAN 5.3 2026/01/16 10:37:58 61 61 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:19 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 10:36:52 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:22 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 12.482 3.71843 4.96032 31.85 1494.72 1024.058 0.45 0.45 12.637 3.68982 4.90189 31.45 1494.77 1023.718 0.75 0.75 12.781 3.68669 4.87905 31.30 1495.09 1023.576 1.05 1.05 12.870 3.70651 4.89369 31.41 1495.53 1023.647 1.35 1.34 12.744 3.70720 4.91095 31.53 1495.24 1023.759 1.65 1.64 12.693 3.70267 4.91167 31.53 1495.07 1023.770 1.95 1.94 12.584 3.69312 4.91315 31.53 1494.71 1023.792 2.25 2.24 12.401 3.68677 4.92866 31.62 1494.20 1023.900 2.55 2.54 12.254 3.68359 4.94390 31.71 1493.81 1024.002 2.85 2.84 12.097 3.67515 4.95339 31.76 1493.34 1024.073 3.15 3.14 12.027 3.67081 4.95698 31.78 1493.13 1024.102 3.45 3.43 11.947 3.66149 4.95502 31.76 1492.83 1024.100 3.75 3.73 11.853 3.65514 4.95910 31.78 1492.53 1024.134 4.05 4.03 11.770 3.64672 4.95877 31.77 1492.24 1024.142 4.35 4.33 11.676 3.64429 4.96828 31.83 1491.98 1024.205 4.65 4.63 11.586 3.63716 4.97066 31.83 1491.69 1024.228 4.95 4.93 11.517 3.63481 4.97691 31.87 1491.49 1024.271 5.25 5.23 11.467 3.63182 4.97965 31.88 1491.34 1024.292 5.55 5.52 11.391 3.62757 4.98411 31.91 1491.11 1024.325 5.85 5.82 11.315 3.62087 4.98531 31.91 1490.85 1024.340 6.15 6.12 11.275 3.61773 4.98658 31.91 1490.72 1024.352 6.45 6.42 11.217 3.61468 4.99035 31.93 1490.54 1024.379 6.75 6.72 11.133 3.61205 4.99829 31.98 1490.31 1024.432 7.05 7.02 11.063 3.60643 5.00012 31.98 1490.08 1024.449 7.35 7.32 10.991 3.60226 5.00436 32.01 1489.85 1024.480 7.65 7.61 10.924 3.58986 4.99652 31.94 1489.54 1024.443 7.95 7.91 10.835 3.58580 5.00328 31.98 1489.28 1024.489 8.25 8.21 10.750 3.57991 5.00680 31.99 1489.00 1024.517 8.55 8.51 10.680 3.57659 5.01208 32.02 1488.79 1024.553 8.85 8.81 10.595 3.56967 5.01431 32.03 1488.50 1024.573 9.15 9.11 10.522 3.56082 5.01208 32.00 1488.21 1024.567 9.45 9.41 10.448 3.54974 5.00695 31.96 1487.90 1024.546 9.75 9.70 10.362 3.54485 5.01220 31.98 1487.63 1024.582 10.05 10.00 10.309 3.54396 5.01844 32.02 1487.49 1024.622 10.35 10.30 10.264 3.54227 5.02253 32.04 1487.36 1024.649 10.65 10.60 10.227 3.54110 5.02615 32.07 1487.25 1024.673 10.95 10.90 10.198 3.53923 5.02755 32.07 1487.16 1024.684 11.25 11.20 10.176 3.53662 5.02703 32.07 1487.08 1024.683 11.55 11.49 10.147 3.53629 5.03073 32.09 1487.01 1024.707 11.85 11.79 10.113 3.53355 5.03173 32.09 1486.89 1024.716 12.15 12.09 10.087 3.53062 5.03119 32.08 1486.80 1024.716 12.45 12.39 10.056 3.52843 5.03262 32.09 1486.69 1024.727 12.75 12.69 10.021 3.52703 5.03556 32.10 1486.60 1024.747 13.05 12.99 9.995 3.52465 5.03588 32.10 1486.50 1024.752 13.35 13.28 9.970 3.52418 5.03892 32.12 1486.44 1024.771 13.65 13.58 9.945 3.52291 5.04067 32.13 1486.36 1024.784 13.95 13.88 9.930 3.52178 5.04125 32.13 1486.32 1024.789 14.25 14.18 9.915 3.52016 5.04110 32.13 1486.26 1024.791 14.55 14.48 9.888 3.51953 5.04403 32.15 1486.19 1024.810 14.85 14.78 9.868 3.51791 5.04465 32.15 1486.13 1024.816 15.15 15.07 9.841 3.51616 5.04605 32.15 1486.04 1024.826 15.45 15.37 9.820 3.51288 5.04431 32.14 1485.95 1024.819 15.75 15.67 9.805 3.50976 5.04209 32.12 1485.88 1024.809 16.05 15.97 9.783 3.50933 5.04459 32.14 1485.82 1024.825 16.35 16.27 9.774 3.50805 5.04402 32.13 1485.79 1024.824 16.65 16.57 9.776 3.50966 5.04607 32.15 1485.82 1024.837 16.95 16.87 9.768 3.50905 5.04638 32.15 1485.80 1024.840 17.25 17.16 9.757 3.50939 5.04842 32.16 1485.78 1024.853 17.55 17.46 9.749 3.51000 5.05048 32.17 1485.77 1024.866 17.85 17.76 9.745 3.51022 5.05134 32.18 1485.77 1024.872 18.24 18.15 9.744 3.51024 5.05159 32.18 1485.77 1024.876