*2026/01/16 09:47:04.58 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/11/30 22:29:45.000 END TIME : UTC 2023/11/30 22:29:58.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 68 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.21 2 Depth metres 0.15 20.16 3 Temperature 'deg C (ITS90)' 10.767 11.858 4 Conductivity S/m 3.16322 3.45706 5 Conductance:Specific S/m 4.42091 4.69018 6 Salinity PSS-78 27.88 29.87 7 Speed:Sound m/s 1483.98 1490.53 8 Density kg/m^3 1021.274 1022.722 $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 : 2023-031 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 88 LATITUDE : 49 19.36910 N ! (deg min) LONGITUDE : 126 2.43990 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231130_222945 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:52 68 68 MERGEHDR 1.3 2026/01/15 13:41:48 68 68 HDREDIT2 3.2 2026/01/15 14:00:57 ? ? REMOVECH 8.2 2026/01/15 14:01:18 68 68 CALIB 12.1 2026/01/16 09:46:08 68 68 CLEAN 5.3 2026/01/16 09:47:04 68 68 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:57 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 2026/01/15 14:01:18 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:08 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 09:47:01 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 10.776 3.16322 4.42091 27.88 1484.00 1021.274 0.45 0.45 10.767 3.16324 4.42205 27.88 1483.98 1021.282 0.75 0.75 10.779 3.16644 4.42506 27.91 1484.05 1021.299 1.05 1.05 10.780 3.16711 4.42581 27.91 1484.07 1021.304 1.35 1.35 10.774 3.16852 4.42851 27.93 1484.07 1021.321 1.65 1.65 10.775 3.16771 4.42732 27.92 1484.07 1021.315 1.95 1.95 10.773 3.16760 4.42734 27.92 1484.07 1021.317 2.25 2.25 10.769 3.16934 4.43029 27.94 1484.08 1021.335 2.55 2.55 10.779 3.17030 4.43046 27.94 1484.12 1021.336 2.85 2.84 10.787 3.17271 4.43273 27.96 1484.18 1021.349 3.15 3.14 10.797 3.17523 4.43502 27.98 1484.24 1021.362 3.45 3.44 10.812 3.17615 4.43452 27.97 1484.30 1021.359 3.75 3.74 10.822 3.17579 4.43280 27.96 1484.32 1021.350 4.05 4.04 10.878 3.17844 4.42947 27.95 1484.51 1021.328 4.35 4.34 10.911 3.19013 4.44169 28.03 1484.74 1021.393 4.65 4.64 10.947 3.21305 4.46916 28.23 1485.11 1021.540 4.95 4.94 10.973 3.23018 4.48974 28.38 1485.38 1021.651 5.25 5.24 11.051 3.24523 4.50085 28.46 1485.77 1021.705 5.55 5.54 11.080 3.25003 4.50387 28.49 1485.91 1021.720 5.85 5.84 11.119 3.25509 4.50603 28.50 1486.07 1021.730 6.15 6.14 11.145 3.26072 4.51066 28.54 1486.21 1021.754 6.45 6.44 11.156 3.26292 4.51230 28.55 1486.27 1021.763 6.75 6.74 11.217 3.26876 4.51278 28.56 1486.50 1021.761 7.05 7.04 11.281 3.28121 4.52195 28.63 1486.82 1021.807 7.35 7.33 11.297 3.29285 4.53594 28.73 1487.00 1021.882 7.65 7.63 11.344 3.30733 4.55010 28.83 1487.29 1021.956 7.95 7.93 11.377 3.31544 4.55706 28.89 1487.48 1021.992 8.25 8.23 11.423 3.32617 4.56601 28.95 1487.73 1022.038 8.55 8.53 11.449 3.32876 4.56630 28.96 1487.83 1022.038 8.85 8.83 11.464 3.34047 4.58046 29.06 1488.01 1022.115 9.15 9.13 11.523 3.35553 4.59369 29.16 1488.34 1022.183 9.45 9.43 11.541 3.35613 4.59231 29.15 1488.39 1022.175 9.75 9.73 11.542 3.35621 4.59229 29.15 1488.40 1022.176 10.05 10.03 11.539 3.36208 4.60073 29.21 1488.47 1022.224 10.35 10.33 11.566 3.36591 4.60246 29.22 1488.59 1022.232 10.65 10.63 11.591 3.36886 4.60339 29.23 1488.69 1022.235 10.95 10.93 11.612 3.37080 4.60343 29.23 1488.77 1022.235 11.25 11.22 11.626 3.37882 4.61260 29.30 1488.90 1022.285 11.55 11.52 11.642 3.38445 4.61832 29.34 1489.01 1022.316 11.85 11.82 11.646 3.38711 4.62144 29.36 1489.06 1022.333 12.15 12.12 11.669 3.39062 4.62327 29.38 1489.16 1022.342 12.45 12.42 11.676 3.39360 4.62648 29.40 1489.22 1022.361 12.75 12.72 11.676 3.39954 4.63453 29.46 1489.29 1022.406 13.05 13.02 11.689 3.40381 4.63875 29.49 1489.38 1022.429 13.35 13.32 11.699 3.40791 4.64302 29.52 1489.46 1022.452 13.65 13.62 11.703 3.40939 4.64453 29.53 1489.49 1022.461 13.95 13.92 11.708 3.41370 4.64976 29.57 1489.56 1022.491 14.25 14.22 11.717 3.41718 4.65334 29.60 1489.62 1022.511 14.55 14.51 11.715 3.41877 4.65580 29.61 1489.64 1022.526 14.85 14.81 11.724 3.42257 4.65987 29.64 1489.71 1022.548 15.15 15.11 11.728 3.42535 4.66308 29.66 1489.76 1022.567 15.45 15.41 11.732 3.42912 4.66780 29.70 1489.82 1022.593 15.75 15.71 11.737 3.43169 4.67067 29.72 1489.86 1022.610 16.05 16.01 11.754 3.43768 4.67656 29.76 1489.98 1022.642 16.35 16.31 11.764 3.43872 4.67673 29.76 1490.02 1022.643 16.65 16.61 11.764 3.43946 4.67773 29.77 1490.04 1022.650 16.95 16.91 11.763 3.44142 4.68058 29.79 1490.06 1022.667 17.25 17.21 11.776 3.44275 4.68064 29.79 1490.12 1022.667 17.55 17.50 11.783 3.44362 4.68096 29.80 1490.15 1022.669 17.85 17.80 11.786 3.44432 4.68156 29.80 1490.17 1022.673 18.15 18.10 11.796 3.44450 4.68054 29.79 1490.20 1022.668 18.45 18.40 11.789 3.44342 4.68001 29.79 1490.17 1022.667 18.75 18.70 11.770 3.44576 4.68558 29.83 1490.16 1022.701 19.05 19.00 11.795 3.45105 4.68958 29.86 1490.29 1022.721 19.35 19.30 11.845 3.45415 4.68737 29.85 1490.45 1022.705 19.65 19.60 11.851 3.45614 4.68932 29.86 1490.50 1022.717 19.95 19.90 11.854 3.45706 4.69018 29.87 1490.52 1022.722 20.21 20.16 11.858 3.45677 4.68928 29.86 1490.53 1022.718