*2026/01/16 10:37:57.84 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/21 23:33:49.000 END TIME : UTC 2025/07/21 23:34:04.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 76 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 22.59 2 Depth metres 0.15 22.54 3 Temperature 'deg C (ITS90)' 9.47 21.136 4 Conductivity S/m 3.27685 3.69566 5 Conductance:Specific S/m 3.55127 5.06473 6 Salinity PSS-78 22.33 32.23 7 Speed:Sound m/s 1484.9 1510.86 8 Density kg/m^3 1014.847 1024.98 $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 : 217 LATITUDE : 49 37.70880 N ! (deg min) LONGITUDE : 126 3.51690 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250721_233349 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:33 76 76 MERGEHDR 1.3 2026/01/16 10:35:48 76 76 HDREDIT2 3.2 2026/01/16 10:36:19 ? ? REMOVECH 8.2 2026/01/16 10:36:51 76 76 CALIB 12.1 2026/01/16 10:37:22 76 76 CLEAN 5.3 2026/01/16 10:37:57 76 76 $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 10:36:51 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 21.136 3.27685 3.55127 22.33 1510.59 1014.847 0.45 0.45 21.127 3.28073 3.55620 22.36 1510.60 1014.876 0.75 0.75 21.059 3.29269 3.57444 22.49 1510.55 1014.990 1.05 1.05 21.014 3.30862 3.59522 22.63 1510.59 1015.111 1.35 1.36 20.977 3.31632 3.60646 22.71 1510.58 1015.180 1.65 1.66 20.927 3.33698 3.63289 22.89 1510.65 1015.333 1.95 1.96 20.913 3.35352 3.65207 23.03 1510.76 1015.439 2.25 2.26 20.886 3.36126 3.66260 23.10 1510.77 1015.502 2.55 2.56 20.842 3.38343 3.69034 23.29 1510.86 1015.660 2.85 2.86 20.767 3.39661 3.71074 23.43 1510.81 1015.787 3.15 3.16 20.720 3.40276 3.72129 23.51 1510.77 1015.855 3.45 3.46 20.708 3.40702 3.72696 23.55 1510.78 1015.890 3.75 3.76 20.660 3.41193 3.73619 23.61 1510.72 1015.951 4.05 4.07 20.435 3.45724 3.80464 24.08 1510.61 1016.368 4.35 4.37 19.601 3.57410 4.00672 25.48 1509.79 1017.639 4.65 4.67 18.929 3.62954 4.13111 26.34 1508.81 1018.456 4.95 4.97 18.600 3.64736 4.18277 26.70 1508.24 1018.806 5.25 5.27 18.378 3.65181 4.20925 26.88 1507.80 1018.997 5.55 5.57 18.037 3.67141 4.26540 27.26 1507.22 1019.373 5.85 5.87 17.542 3.67654 4.32111 27.64 1506.16 1019.775 6.15 6.17 17.102 3.67988 4.37015 27.97 1505.20 1020.129 6.45 6.47 16.592 3.68209 4.42640 28.34 1504.07 1020.532 6.75 6.77 16.140 3.67956 4.47202 28.64 1503.01 1020.863 7.05 7.07 15.746 3.67452 4.50911 28.88 1502.06 1021.136 7.35 7.36 15.466 3.67254 4.53785 29.07 1501.39 1021.341 7.65 7.66 15.250 3.67173 4.56115 29.22 1500.89 1021.506 7.95 7.96 15.082 3.67112 4.57950 29.34 1500.49 1021.635 8.25 8.26 14.934 3.67670 4.60342 29.50 1500.21 1021.790 8.55 8.56 14.688 3.68293 4.63990 29.75 1499.70 1022.030 8.85 8.86 14.514 3.68701 4.66549 29.92 1499.34 1022.198 9.15 9.16 14.382 3.68872 4.68320 30.03 1499.05 1022.317 9.45 9.46 14.226 3.68736 4.70009 30.14 1498.67 1022.434 9.75 9.76 14.077 3.68939 4.72069 30.28 1498.35 1022.570 10.05 10.06 13.945 3.69176 4.73967 30.40 1498.07 1022.694 10.35 10.36 13.794 3.69566 4.76322 30.56 1497.76 1022.846 10.65 10.66 13.470 3.69181 4.79836 30.78 1496.95 1023.085 10.95 10.95 13.185 3.68053 4.81932 30.91 1496.15 1023.239 11.25 11.25 12.825 3.67090 4.85243 31.11 1495.19 1023.468 11.55 11.55 12.396 3.67388 4.91209 31.50 1494.19 1023.848 11.85 11.85 12.116 3.65754 4.92711 31.58 1493.33 1023.964 12.15 12.15 11.828 3.63268 4.93191 31.58 1492.35 1024.021 12.45 12.45 11.490 3.61915 4.95910 31.74 1491.37 1024.206 12.75 12.75 11.178 3.59891 4.97385 31.81 1490.36 1024.318 13.05 13.05 11.009 3.58594 4.97920 31.83 1489.79 1024.363 13.35 13.34 10.898 3.58048 4.98701 31.87 1489.46 1024.417 13.65 13.64 10.781 3.57430 4.99462 31.91 1489.10 1024.470 13.95 13.94 10.658 3.56629 5.00063 31.94 1488.70 1024.514 14.25 14.24 10.588 3.56034 5.00221 31.94 1488.45 1024.529 14.55 14.54 10.500 3.55615 5.00861 31.97 1488.19 1024.573 14.85 14.84 10.388 3.55195 5.01858 32.03 1487.86 1024.637 15.15 15.13 10.325 3.54753 5.02134 32.04 1487.65 1024.658 15.45 15.43 10.251 3.53692 5.01677 32.00 1487.34 1024.639 15.75 15.73 10.153 3.53202 5.02382 32.04 1487.04 1024.686 16.05 16.03 10.071 3.52673 5.02797 32.06 1486.77 1024.716 16.35 16.33 9.993 3.52045 5.03023 32.06 1486.50 1024.734 16.65 16.63 9.927 3.51845 5.03686 32.10 1486.31 1024.777 16.95 16.93 9.884 3.51603 5.03964 32.11 1486.18 1024.796 17.25 17.22 9.851 3.51451 5.04223 32.13 1486.08 1024.813 17.55 17.52 9.818 3.51296 5.04472 32.14 1485.98 1024.830 17.85 17.82 9.778 3.51109 5.04791 32.16 1485.86 1024.852 18.15 18.12 9.740 3.50714 5.04766 32.15 1485.72 1024.854 18.45 18.42 9.706 3.50578 5.05069 32.17 1485.62 1024.874 18.75 18.72 9.663 3.50239 5.05205 32.17 1485.47 1024.885 19.05 19.01 9.626 3.49949 5.05327 32.17 1485.35 1024.895 19.35 19.31 9.599 3.49872 5.05615 32.19 1485.27 1024.914 19.65 19.61 9.588 3.49915 5.05830 32.21 1485.26 1024.927 19.95 19.91 9.576 3.49867 5.05946 32.21 1485.22 1024.936 20.25 20.21 9.570 3.49880 5.06051 32.22 1485.21 1024.943 20.55 20.51 9.569 3.49575 5.05612 32.19 1485.18 1024.920 20.85 20.80 9.558 3.49673 5.05919 32.21 1485.17 1024.939 21.15 21.10 9.537 3.49218 5.05571 32.18 1485.06 1024.922 21.45 21.40 9.508 3.49276 5.06079 32.21 1485.00 1024.953 21.75 21.70 9.492 3.49306 5.06355 32.23 1484.97 1024.970 22.05 22.00 9.485 3.49216 5.06335 32.23 1484.94 1024.971 22.35 22.30 9.470 3.49158 5.06473 32.23 1484.90 1024.980 22.59 22.54 9.479 3.49198 5.06386 32.23 1484.93 1024.976