*2026/01/16 10:37:52.15 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/10 16:31:52.000 END TIME : UTC 2025/04/10 16:32:15.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 120 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 35.91 2 Depth metres 0.15 35.84 3 Temperature 'deg C (ITS90)' 8.188 10.066 4 Conductivity S/m 0.80783 3.15805 5 Conductance:Specific S/m 1.21707 4.65454 6 Salinity PSS-78 6.79 29.28 7 Speed:Sound m/s 1448.43 1480.13 8 Density kg/m^3 1005.178 1022.817 $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 : 106 LATITUDE : 50 8.46870 N ! (deg min) LONGITUDE : 127 5.92900 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250410_163152 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:28 120 120 MERGEHDR 1.3 2026/01/16 10:35:42 120 120 HDREDIT2 3.2 2026/01/16 10:36:12 ? ? REMOVECH 8.2 2026/01/16 10:36:39 120 120 CALIB 12.1 2026/01/16 10:37:15 120 120 CLEAN 5.3 2026/01/16 10:37:52 120 120 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:12 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 10:36:39 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:15 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 8.188 0.80783 1.21707 6.79 1448.43 1005.178 0.45 0.46 8.780 1.03574 1.53306 8.73 1453.21 1006.639 0.75 0.76 9.142 1.47625 2.16190 12.67 1459.48 1009.680 1.05 1.06 9.522 1.86196 2.69676 16.14 1465.17 1012.333 1.35 1.36 9.749 2.62886 3.78262 23.39 1474.83 1017.944 1.65 1.66 9.786 2.83218 4.07091 25.36 1477.36 1019.475 1.95 1.96 9.828 2.92055 4.19281 26.20 1478.54 1020.125 2.25 2.26 9.971 2.96066 4.23303 26.49 1479.43 1020.333 2.55 2.56 10.040 2.97190 4.24071 26.55 1479.76 1020.370 2.85 2.86 10.066 2.98186 4.25177 26.63 1479.96 1020.429 3.15 3.16 10.061 2.98720 4.26004 26.69 1480.01 1020.475 3.45 3.46 10.044 3.00123 4.28213 26.84 1480.13 1020.597 3.75 3.76 10.002 3.00773 4.29654 26.93 1480.10 1020.679 4.05 4.06 9.933 3.01469 4.31501 27.05 1480.00 1020.784 4.35 4.36 9.855 3.02254 4.33582 27.19 1479.88 1020.903 4.65 4.66 9.800 3.03198 4.35633 27.32 1479.85 1021.019 4.95 4.96 9.745 3.03581 4.36877 27.40 1479.74 1021.091 5.25 5.26 9.703 3.03881 4.37828 27.47 1479.67 1021.146 5.55 5.56 9.673 3.03915 4.38256 27.49 1479.60 1021.173 5.85 5.86 9.636 3.03923 4.38745 27.52 1479.50 1021.203 6.15 6.16 9.590 3.04120 4.39609 27.58 1479.40 1021.253 6.45 6.46 9.547 3.04215 4.40289 27.62 1479.30 1021.294 6.75 6.76 9.504 3.04404 4.41112 27.67 1479.21 1021.342 7.05 7.06 9.462 3.04700 4.42076 27.73 1479.13 1021.398 7.35 7.35 9.421 3.04901 4.42897 27.78 1479.05 1021.446 7.65 7.65 9.384 3.04965 4.43464 27.82 1478.96 1021.480 7.95 7.95 9.351 3.05109 4.44112 27.86 1478.89 1021.519 8.25 8.25 9.315 3.05275 4.44818 27.90 1478.81 1021.560 8.55 8.55 9.287 3.05421 4.45387 27.94 1478.76 1021.594 8.85 8.85 9.258 3.05565 4.45970 27.98 1478.70 1021.628 9.15 9.15 9.225 3.05754 4.46678 28.02 1478.64 1021.669 9.45 9.45 9.199 3.05811 4.47109 28.05 1478.57 1021.695 9.75 9.75 9.187 3.05933 4.47446 28.07 1478.56 1021.716 10.05 10.05 9.176 3.06029 4.47727 28.09 1478.55 1021.733 10.35 10.35 9.162 3.06066 4.47959 28.10 1478.52 1021.747 10.65 10.65 9.152 3.06185 4.48266 28.12 1478.51 1021.766 10.95 10.95 9.145 3.06168 4.48340 28.13 1478.49 1021.771 11.25 11.25 9.135 3.06173 4.48471 28.13 1478.47 1021.780 11.55 11.54 9.124 3.06243 4.48721 28.15 1478.45 1021.796 11.85 11.84 9.115 3.06295 4.48921 28.16 1478.44 1021.808 12.15 12.14 9.108 3.06405 4.49174 28.18 1478.44 1021.824 12.45 12.44 9.098 3.06508 4.49458 28.20 1478.43 1021.841 12.75 12.74 9.086 3.06485 4.49576 28.20 1478.40 1021.849 13.05 13.04 9.075 3.06448 4.49661 28.21 1478.37 1021.855 13.35 13.34 9.061 3.06530 4.49973 28.23 1478.34 1021.874 13.65 13.64 9.055 3.06535 4.50055 28.23 1478.33 1021.880 13.95 13.94 9.050 3.06513 4.50098 28.24 1478.32 1021.884 14.25 14.24 9.040 3.06543 4.50262 28.25 1478.30 1021.895 14.55 14.54 9.035 3.06574 4.50383 28.25 1478.29 1021.903 14.85 14.84 9.029 3.06618 4.50521 28.26 1478.29 1021.912 15.15 15.14 9.023 3.06658 4.50670 28.27 1478.28 1021.922 15.45 15.43 9.018 3.06716 4.50821 28.28 1478.28 1021.931 15.75 15.73 9.012 3.06760 4.50952 28.29 1478.27 1021.940 16.05 16.03 9.003 3.06763 4.51077 28.30 1478.26 1021.948 16.35 16.33 8.995 3.06763 4.51185 28.30 1478.24 1021.956 16.65 16.63 8.984 3.06762 4.51332 28.31 1478.21 1021.966 16.95 16.93 8.969 3.06746 4.51514 28.32 1478.17 1021.978 17.25 17.23 8.956 3.06649 4.51543 28.32 1478.13 1021.981 17.55 17.53 8.947 3.06669 4.51694 28.33 1478.11 1021.991 17.85 17.83 8.932 3.06711 4.51944 28.35 1478.08 1022.006 18.15 18.13 8.918 3.06715 4.52144 28.36 1478.04 1022.019 18.45 18.43 8.903 3.06816 4.52490 28.38 1478.02 1022.040 18.75 18.73 8.888 3.06878 4.52777 28.40 1477.99 1022.057 19.05 19.03 8.872 3.06790 4.52865 28.40 1477.94 1022.064 19.35 19.32 8.856 3.06828 4.53142 28.42 1477.90 1022.081 19.65 19.62 8.840 3.06899 4.53456 28.44 1477.87 1022.100 19.95 19.92 8.825 3.06833 4.53559 28.44 1477.83 1022.108 20.25 20.22 8.811 3.06911 4.53864 28.46 1477.80 1022.126 20.55 20.52 8.796 3.06915 4.54074 28.48 1477.77 1022.140 20.85 20.82 8.784 3.06931 4.54253 28.49 1477.74 1022.151 21.15 21.12 8.773 3.06961 4.54445 28.50 1477.72 1022.163 21.45 21.42 8.765 3.07008 4.54629 28.51 1477.71 1022.175 21.75 21.72 8.758 3.07228 4.55043 28.54 1477.72 1022.199 22.05 22.02 8.753 3.07256 4.55152 28.55 1477.72 1022.206 22.35 22.32 8.747 3.07295 4.55287 28.55 1477.71 1022.215 22.65 22.62 8.736 3.07391 4.55577 28.57 1477.70 1022.232 22.95 22.91 8.729 3.07457 4.55781 28.59 1477.69 1022.245 23.25 23.21 8.723 3.07427 4.55815 28.59 1477.67 1022.249 23.55 23.51 8.713 3.07562 4.56154 28.61 1477.66 1022.269 23.85 23.81 8.700 3.07630 4.56426 28.63 1477.64 1022.285 24.15 24.11 8.693 3.07618 4.56494 28.63 1477.63 1022.290 24.45 24.41 8.691 3.07608 4.56520 28.63 1477.62 1022.293 24.75 24.71 8.683 3.07620 4.56633 28.64 1477.61 1022.301 25.05 25.01 8.677 3.07767 4.56944 28.66 1477.61 1022.319 25.35 25.31 8.672 3.07877 4.57171 28.67 1477.62 1022.333 25.65 25.61 8.669 3.07919 4.57268 28.68 1477.62 1022.340 25.95 25.91 8.666 3.08100 4.57585 28.70 1477.64 1022.358 26.25 26.20 8.662 3.08292 4.57918 28.72 1477.66 1022.378 26.55 26.50 8.661 3.08462 4.58188 28.74 1477.68 1022.394 26.85 26.80 8.662 3.08746 4.58597 28.77 1477.73 1022.417 27.15 27.10 8.660 3.08860 4.58797 28.78 1477.74 1022.429 27.45 27.40 8.661 3.08982 4.58966 28.80 1477.76 1022.440 27.75 27.70 8.663 3.09065 4.59060 28.80 1477.78 1022.446 28.05 28.00 8.665 3.09201 4.59232 28.81 1477.81 1022.457 28.35 28.30 8.670 3.09413 4.59483 28.83 1477.86 1022.471 28.65 28.60 8.675 3.09607 4.59694 28.85 1477.90 1022.484 28.95 28.90 8.680 3.09948 4.60140 28.88 1477.96 1022.509 29.25 29.20 8.686 3.10009 4.60143 28.88 1477.99 1022.510 29.55 29.49 8.695 3.10355 4.60532 28.91 1478.06 1022.532 29.85 29.79 8.706 3.10643 4.60813 28.93 1478.14 1022.548 30.15 30.09 8.713 3.10961 4.61190 28.96 1478.20 1022.570 30.45 30.39 8.719 3.11174 4.61422 28.97 1478.25 1022.583 30.75 30.69 8.727 3.11452 4.61721 28.99 1478.31 1022.601 31.05 30.99 8.734 3.11621 4.61878 29.01 1478.36 1022.610 31.35 31.29 8.740 3.11774 4.62020 29.02 1478.40 1022.619 31.65 31.59 8.753 3.11947 4.62104 29.02 1478.46 1022.624 31.95 31.89 8.764 3.12164 4.62274 29.04 1478.52 1022.634 32.25 32.19 8.769 3.12503 4.62710 29.07 1478.58 1022.659 32.55 32.48 8.769 3.12677 4.62966 29.09 1478.61 1022.674 32.85 32.78 8.775 3.12784 4.63046 29.09 1478.64 1022.680 33.15 33.08 8.787 3.13057 4.63276 29.11 1478.72 1022.693 33.45 33.38 8.795 3.13277 4.63502 29.13 1478.77 1022.706 33.75 33.68 8.802 3.13803 4.64181 29.17 1478.86 1022.744 34.05 33.98 8.828 3.14261 4.64492 29.20 1479.00 1022.761 34.35 34.28 8.852 3.14542 4.64588 29.21 1479.10 1022.766 34.65 34.58 8.871 3.14859 4.64786 29.22 1479.20 1022.778 34.95 34.88 8.894 3.15025 4.64716 29.22 1479.29 1022.774 35.25 35.18 8.903 3.15193 4.64847 29.23 1479.34 1022.782 35.55 35.47 8.910 3.15523 4.65231 29.26 1479.40 1022.804 35.91 35.84 8.924 3.15805 4.65454 29.28 1479.48 1022.817