*2026/01/16 10:37:59.67 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/23 19:43:13.000 END TIME : UTC 2025/07/23 19:43:33.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 102 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 30.59 2 Depth metres 0.15 30.47 3 Temperature 'deg C (ITS90)' 9.496 21.839 4 Conductivity S/m 3.50102 3.97028 5 Conductance:Specific S/m 3.97353 5.08164 6 Salinity PSS-78 25.3 32.44 7 Speed:Sound m/s 1485.21 1516.42 8 Density kg/m^3 1016.933 1025.07 $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 : 243 LATITUDE : 49 47.04230 N ! (deg min) LONGITUDE : 126 27.05110 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250723_194313 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:35 102 102 MERGEHDR 1.3 2026/01/16 10:35:49 102 102 HDREDIT2 3.2 2026/01/16 10:36:20 ? ? REMOVECH 8.2 2026/01/16 10:36:52 102 102 CALIB 12.1 2026/01/16 10:37:23 102 102 CLEAN 5.3 2026/01/16 10:37:59 102 102 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:20 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 10:37:23 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 21.839 3.80001 4.05643 25.88 1516.42 1017.352 0.45 0.45 21.750 3.71523 3.97353 25.30 1515.54 1016.933 0.75 0.75 21.548 3.86234 4.14875 26.53 1516.35 1017.923 1.05 1.05 21.337 3.88515 4.19223 26.84 1516.12 1018.211 1.35 1.35 21.199 3.90200 4.22302 27.05 1515.98 1018.412 1.65 1.65 21.192 3.91742 4.24041 27.18 1516.10 1018.509 1.95 1.95 21.061 3.92434 4.25998 27.31 1515.90 1018.648 2.25 2.25 20.886 3.92809 4.28027 27.45 1515.58 1018.802 2.55 2.55 20.761 3.93183 4.29602 27.56 1515.36 1018.918 2.85 2.85 20.549 3.94144 4.32655 27.78 1515.01 1019.135 3.15 3.15 20.336 3.95510 4.36200 28.02 1514.69 1019.379 3.45 3.45 20.164 3.95344 4.37678 28.12 1514.32 1019.501 3.75 3.75 19.996 3.95177 4.39123 28.22 1513.96 1019.620 4.05 4.05 19.734 3.94879 4.41361 28.37 1513.40 1019.803 4.35 4.35 19.378 3.95545 4.45653 28.67 1512.71 1020.118 4.65 4.65 18.783 3.96757 4.53099 29.18 1511.57 1020.656 4.95 4.95 18.110 3.97028 4.60481 29.69 1510.17 1021.203 5.25 5.25 17.621 3.96457 4.65093 29.99 1509.07 1021.557 5.55 5.55 17.198 3.94159 4.67034 30.11 1507.93 1021.748 5.85 5.85 16.825 3.91898 4.68495 30.20 1506.90 1021.900 6.15 6.15 16.181 3.89717 4.73171 30.50 1505.27 1022.276 6.45 6.45 15.321 3.86259 4.78978 30.86 1502.99 1022.745 6.75 6.75 14.965 3.83506 4.79803 30.90 1501.90 1022.849 7.05 7.05 14.557 3.81383 4.82068 31.03 1500.75 1023.038 7.35 7.34 14.057 3.77323 4.83040 31.06 1499.16 1023.167 7.65 7.64 13.650 3.75018 4.85142 31.18 1497.96 1023.341 7.95 7.94 13.279 3.72585 4.86674 31.26 1496.83 1023.476 8.25 8.24 12.937 3.70517 4.88329 31.34 1495.79 1023.612 8.55 8.54 12.713 3.69566 4.89971 31.44 1495.15 1023.731 8.85 8.84 12.546 3.68854 4.91206 31.51 1494.67 1023.820 9.15 9.14 12.365 3.68151 4.92637 31.60 1494.16 1023.921 9.45 9.44 12.177 3.67592 4.94379 31.70 1493.65 1024.039 9.75 9.73 12.061 3.66428 4.94363 31.69 1493.24 1024.052 10.05 10.03 11.959 3.65835 4.94919 31.72 1492.93 1024.095 10.35 10.33 11.843 3.65147 4.95545 31.75 1492.57 1024.142 10.65 10.63 11.743 3.64648 4.96217 31.79 1492.27 1024.191 10.95 10.93 11.647 3.64034 4.96673 31.81 1491.97 1024.227 11.25 11.23 11.553 3.63088 4.96654 31.80 1491.64 1024.236 11.55 11.53 11.481 3.62248 4.96495 31.78 1491.37 1024.236 11.85 11.82 11.348 3.61635 4.97466 31.83 1490.97 1024.303 12.15 12.12 11.232 3.60853 4.97982 31.86 1490.60 1024.343 12.45 12.42 11.174 3.60626 4.98467 31.88 1490.43 1024.377 12.75 12.72 11.131 3.60573 4.98977 31.92 1490.33 1024.410 13.05 13.02 11.095 3.60457 4.99318 31.94 1490.23 1024.433 13.35 13.32 11.063 3.60213 4.99422 31.94 1490.12 1024.443 13.65 13.62 11.036 3.60035 4.99549 31.94 1490.04 1024.453 13.95 13.91 11.002 3.59911 4.99852 31.96 1489.95 1024.474 14.25 14.21 10.965 3.59653 5.00000 31.97 1489.83 1024.487 14.55 14.51 10.921 3.59407 5.00279 31.98 1489.69 1024.507 14.85 14.81 10.866 3.58879 5.00299 31.98 1489.50 1024.514 15.15 15.11 10.819 3.58481 5.00411 31.98 1489.34 1024.525 15.45 15.41 10.784 3.58232 5.00545 31.99 1489.23 1024.537 15.75 15.71 10.749 3.57915 5.00588 31.98 1489.11 1024.543 16.05 16.00 10.709 3.57826 5.01036 32.01 1489.00 1024.573 16.35 16.30 10.657 3.57572 5.01406 32.03 1488.85 1024.598 16.65 16.60 10.610 3.57073 5.01367 32.02 1488.67 1024.601 16.95 16.90 10.558 3.56491 5.01279 32.01 1488.48 1024.601 17.25 17.20 10.497 3.56099 5.01585 32.02 1488.28 1024.624 17.55 17.50 10.461 3.55822 5.01704 32.03 1488.16 1024.635 17.85 17.79 10.423 3.55641 5.01989 32.04 1488.05 1024.654 18.15 18.09 10.388 3.55499 5.02289 32.06 1487.95 1024.675 18.45 18.39 10.363 3.55405 5.02503 32.07 1487.88 1024.690 18.75 18.69 10.336 3.55293 5.02740 32.08 1487.80 1024.706 19.05 18.99 10.306 3.55098 5.02880 32.09 1487.71 1024.717 19.35 19.29 10.280 3.55016 5.03145 32.11 1487.64 1024.735 19.65 19.58 10.260 3.54780 5.03094 32.10 1487.56 1024.735 19.95 19.88 10.221 3.54525 5.03282 32.11 1487.44 1024.749 20.25 20.18 10.181 3.54242 5.03458 32.12 1487.31 1024.763 20.55 20.48 10.153 3.53831 5.03267 32.10 1487.19 1024.755 20.85 20.78 10.122 3.53517 5.03267 32.09 1487.08 1024.759 21.15 21.08 10.074 3.53196 5.03499 32.10 1486.92 1024.776 21.45 21.38 10.029 3.53071 5.03973 32.13 1486.80 1024.806 21.75 21.67 9.988 3.52956 5.04389 32.16 1486.69 1024.833 22.05 21.97 9.950 3.52701 5.04581 32.16 1486.56 1024.847 22.35 22.27 9.926 3.52427 5.04541 32.16 1486.47 1024.848 22.65 22.57 9.899 3.52184 5.04570 32.16 1486.38 1024.852 22.95 22.87 9.879 3.52128 5.04788 32.17 1486.32 1024.867 23.25 23.17 9.863 3.52168 5.05079 32.19 1486.29 1024.885 23.55 23.46 9.847 3.52108 5.05222 32.20 1486.25 1024.895 23.85 23.76 9.833 3.52093 5.05396 32.21 1486.22 1024.907 24.15 24.06 9.823 3.52003 5.05423 32.21 1486.19 1024.910 24.45 24.36 9.815 3.51987 5.05515 32.21 1486.17 1024.917 24.75 24.66 9.802 3.51911 5.05586 32.21 1486.13 1024.923 25.05 24.96 9.798 3.51848 5.05557 32.21 1486.12 1024.923 25.35 25.25 9.786 3.51835 5.05708 32.22 1486.09 1024.933 25.65 25.55 9.770 3.51714 5.05766 32.22 1486.04 1024.939 25.95 25.85 9.751 3.51657 5.05961 32.23 1485.99 1024.952 26.25 26.15 9.731 3.51485 5.06006 32.23 1485.92 1024.957 26.55 26.45 9.714 3.51265 5.05942 32.23 1485.85 1024.955 26.85 26.75 9.694 3.51117 5.06016 32.23 1485.79 1024.962 27.15 27.04 9.669 3.50987 5.06198 32.24 1485.71 1024.975 27.45 27.34 9.652 3.50937 5.06369 32.25 1485.67 1024.986 27.75 27.64 9.645 3.50859 5.06362 32.25 1485.65 1024.988 28.05 27.94 9.628 3.50791 5.06510 32.26 1485.60 1024.998 28.35 28.24 9.619 3.50732 5.06556 32.26 1485.58 1025.002 28.65 28.54 9.599 3.50495 5.06509 32.25 1485.50 1025.002 28.95 28.83 9.573 3.50419 5.06785 32.27 1485.43 1025.020 29.25 29.13 9.555 3.50323 5.06900 32.27 1485.38 1025.028 29.55 29.43 9.533 3.50168 5.07001 32.28 1485.30 1025.036 29.85 29.73 9.518 3.50234 5.07325 32.30 1485.28 1025.057 30.15 30.03 9.496 3.50102 5.07456 32.30 1485.21 1025.066 30.59 30.47 10.125 3.56983 5.08164 32.44 1487.67 1025.070