*2026/01/16 10:37:58.67 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/22 23:31:03.000 END TIME : UTC 2025/07/22 23:31:24.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 107 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 32.02 2 Depth metres 0.15 31.86 3 Temperature 'deg C (ITS90)' 9.52 15.358 4 Conductivity S/m 3.49378 3.82929 5 Conductance:Specific S/m 4.73482 5.06183 6 Salinity PSS-78 30.47 32.22 7 Speed:Sound m/s 1485.21 1502.55 8 Density kg/m^3 1022.409 1025.001 $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 : 233 LATITUDE : 49 46.92850 N ! (deg min) LONGITUDE : 126 38.60320 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250722_233103 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:35 107 107 MERGEHDR 1.3 2026/01/16 10:35:48 107 107 HDREDIT2 3.2 2026/01/16 10:36:19 ? ? REMOVECH 8.2 2026/01/16 10:36:52 107 107 CALIB 12.1 2026/01/16 10:37:22 107 107 CLEAN 5.3 2026/01/16 10:37:58 107 107 $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 15.358 3.82171 4.73482 30.47 1502.55 1022.409 0.45 0.45 15.108 3.82379 4.76692 30.69 1502.01 1022.628 0.75 0.75 15.165 3.81863 4.75373 30.59 1502.09 1022.548 1.05 1.05 15.185 3.82266 4.75628 30.61 1502.18 1022.560 1.35 1.35 15.183 3.82328 4.75736 30.62 1502.19 1022.567 1.65 1.64 15.155 3.82929 4.76808 30.70 1502.19 1022.632 1.95 1.94 15.002 3.82425 4.78004 30.77 1501.79 1022.724 2.25 2.24 14.820 3.81708 4.79290 30.85 1501.31 1022.824 2.55 2.54 14.671 3.80102 4.79066 30.82 1500.80 1022.836 2.85 2.84 14.505 3.79468 4.80282 30.90 1500.36 1022.930 3.15 3.14 14.376 3.79196 4.81502 30.98 1500.03 1023.018 3.45 3.44 14.288 3.78651 4.81892 31.00 1499.78 1023.054 3.75 3.74 14.181 3.78444 4.82942 31.06 1499.51 1023.128 4.05 4.04 13.965 3.76420 4.83028 31.05 1498.79 1023.166 4.35 4.34 13.762 3.75039 4.83777 31.09 1498.17 1023.237 4.65 4.63 13.586 3.73397 4.83854 31.08 1497.59 1023.266 4.95 4.93 13.443 3.72391 4.84337 31.10 1497.15 1023.313 5.25 5.23 13.278 3.70938 4.84526 31.10 1496.60 1023.346 5.55 5.53 13.100 3.70034 4.85605 31.16 1496.08 1023.430 5.85 5.83 12.969 3.69675 4.86818 31.24 1495.73 1023.514 6.15 6.13 12.880 3.69391 4.87584 31.29 1495.49 1023.569 6.45 6.43 12.836 3.69251 4.87962 31.31 1495.38 1023.596 6.75 6.73 12.815 3.69217 4.88186 31.32 1495.33 1023.612 7.05 7.02 12.785 3.69162 4.88507 31.34 1495.25 1023.635 7.35 7.32 12.715 3.68762 4.88874 31.36 1495.05 1023.665 7.65 7.62 12.533 3.67139 4.89091 31.36 1494.43 1023.700 7.95 7.92 12.356 3.65224 4.88841 31.33 1493.79 1023.707 8.25 8.22 12.200 3.64507 4.89925 31.39 1493.34 1023.785 8.55 8.52 11.976 3.64103 4.92350 31.54 1492.75 1023.945 8.85 8.82 11.675 3.62881 4.94719 31.67 1491.88 1024.107 9.15 9.11 11.396 3.59856 4.94360 31.62 1490.84 1024.116 9.45 9.41 11.217 3.57359 4.93363 31.53 1490.11 1024.078 9.75 9.71 11.061 3.56102 4.93746 31.54 1489.58 1024.114 10.05 10.01 10.878 3.55654 4.95651 31.65 1489.07 1024.236 10.35 10.31 10.675 3.55177 4.97796 31.78 1488.51 1024.372 10.65 10.61 10.551 3.55003 4.99288 31.87 1488.18 1024.465 10.95 10.91 10.506 3.54951 4.99842 31.90 1488.07 1024.501 11.25 11.20 10.468 3.54852 5.00249 31.93 1487.96 1024.527 11.55 11.50 10.424 3.54643 5.00575 31.95 1487.83 1024.550 11.85 11.80 10.372 3.54411 5.00980 31.97 1487.68 1024.577 12.15 12.10 10.331 3.54362 5.01487 32.00 1487.57 1024.609 12.45 12.40 10.290 3.54045 5.01622 32.00 1487.43 1024.621 12.75 12.70 10.262 3.53878 5.01779 32.01 1487.35 1024.633 13.05 13.00 10.239 3.53693 5.01855 32.01 1487.27 1024.640 13.35 13.29 10.220 3.53268 5.01513 31.99 1487.18 1024.624 13.65 13.59 10.185 3.53073 5.01734 32.00 1487.07 1024.639 13.95 13.89 10.156 3.53021 5.02084 32.02 1486.99 1024.662 14.25 14.19 10.135 3.52959 5.02286 32.03 1486.94 1024.676 14.55 14.49 10.121 3.52978 5.02513 32.04 1486.91 1024.690 14.85 14.79 10.116 3.52942 5.02539 32.04 1486.90 1024.694 15.15 15.08 10.110 3.52880 5.02537 32.04 1486.88 1024.695 15.45 15.38 10.102 3.52838 5.02586 32.05 1486.86 1024.700 15.75 15.68 10.095 3.52793 5.02630 32.05 1486.84 1024.704 16.05 15.98 10.080 3.52739 5.02768 32.06 1486.80 1024.714 16.35 16.28 10.060 3.52645 5.02922 32.06 1486.74 1024.725 16.65 16.58 10.030 3.52533 5.03193 32.08 1486.66 1024.743 16.95 16.87 9.995 3.52424 5.03531 32.10 1486.56 1024.765 17.25 17.17 9.979 3.52193 5.03428 32.09 1486.50 1024.762 17.55 17.47 9.960 3.52047 5.03506 32.09 1486.43 1024.768 17.85 17.77 9.945 3.51819 5.03385 32.08 1486.37 1024.764 18.15 18.07 9.924 3.51747 5.03588 32.09 1486.32 1024.778 18.45 18.37 9.906 3.51700 5.03785 32.10 1486.27 1024.791 18.75 18.67 9.892 3.51742 5.04040 32.12 1486.24 1024.807 19.05 18.96 9.873 3.51592 5.04099 32.12 1486.18 1024.813 19.35 19.26 9.848 3.51414 5.04215 32.13 1486.10 1024.822 19.65 19.56 9.826 3.51181 5.04197 32.12 1486.02 1024.823 19.95 19.86 9.788 3.50977 5.04454 32.13 1485.90 1024.841 20.25 20.16 9.751 3.50791 5.04721 32.15 1485.79 1024.859 20.55 20.46 9.724 3.50624 5.04876 32.16 1485.71 1024.871 20.85 20.75 9.699 3.50501 5.05064 32.17 1485.63 1024.884 21.15 21.05 9.676 3.50349 5.05182 32.17 1485.56 1024.893 21.45 21.35 9.644 3.50192 5.05419 32.18 1485.46 1024.909 21.75 21.65 9.624 3.50027 5.05465 32.18 1485.40 1024.914 22.05 21.95 9.617 3.49958 5.05472 32.18 1485.37 1024.916 22.35 22.25 9.609 3.49790 5.05342 32.17 1485.34 1024.911 22.65 22.54 9.596 3.49741 5.05459 32.18 1485.30 1024.919 22.95 22.84 9.579 3.49589 5.05490 32.18 1485.24 1024.923 23.25 23.14 9.565 3.49666 5.05809 32.20 1485.22 1024.943 23.55 23.44 9.560 3.49668 5.05884 32.20 1485.21 1024.948 23.85 23.74 9.561 3.49752 5.05994 32.21 1485.23 1024.955 24.15 24.04 9.568 3.49744 5.05885 32.20 1485.25 1024.950 24.45 24.33 9.560 3.49756 5.06010 32.21 1485.24 1024.959 24.75 24.63 9.558 3.49693 5.05947 32.21 1485.23 1024.957 25.05 24.93 9.556 3.49722 5.06019 32.21 1485.24 1024.962 25.35 25.23 9.554 3.49654 5.05955 32.21 1485.23 1024.960 25.65 25.53 9.552 3.49764 5.06135 32.22 1485.24 1024.971 25.95 25.83 9.560 3.49725 5.05972 32.21 1485.26 1024.963 26.25 26.12 9.565 3.49670 5.05813 32.20 1485.27 1024.955 26.55 26.42 9.570 3.49754 5.05864 32.20 1485.30 1024.959 26.85 26.72 9.566 3.49694 5.05841 32.20 1485.28 1024.959 27.15 27.02 9.561 3.49652 5.05841 32.20 1485.27 1024.961 27.45 27.32 9.551 3.49585 5.05892 32.20 1485.24 1024.965 27.75 27.62 9.549 3.49688 5.06070 32.21 1485.26 1024.977 28.05 27.91 9.555 3.49683 5.05985 32.21 1485.27 1024.973 28.35 28.21 9.549 3.49588 5.05926 32.20 1485.25 1024.971 28.65 28.51 9.547 3.49650 5.06049 32.21 1485.26 1024.979 28.95 28.81 9.553 3.49626 5.05921 32.20 1485.28 1024.973 29.25 29.11 9.554 3.49554 5.05802 32.19 1485.28 1024.968 29.55 29.41 9.547 3.49453 5.05757 32.19 1485.25 1024.967 29.85 29.70 9.538 3.49496 5.05955 32.20 1485.24 1024.980 30.15 30.00 9.534 3.49504 5.06025 32.21 1485.23 1024.985 30.45 30.30 9.533 3.49462 5.05987 32.20 1485.23 1024.984 30.75 30.60 9.530 3.49512 5.06104 32.21 1485.23 1024.992 31.05 30.90 9.527 3.49491 5.06111 32.21 1485.23 1024.994 31.35 31.20 9.526 3.49378 5.05970 32.20 1485.21 1024.988 31.65 31.49 9.520 3.49472 5.06183 32.22 1485.22 1025.001 32.02 31.86 9.528 3.49478 5.06076 32.21 1485.24 1024.996