*2026/01/16 10:37:58.31 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/22 19:31:35.000 END TIME : UTC 2025/07/22 19:31:52.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 86 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 25.76 2 Depth metres 0.15 25.63 3 Temperature 'deg C (ITS90)' 10.451 14.088 4 Conductivity S/m 3.571 3.8655 5 Conductance:Specific S/m 4.86844 5.03654 6 Salinity PSS-78 31.33 32.2 7 Speed:Sound m/s 1488.42 1500.11 8 Density kg/m^3 1023.359 1024.778 $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 : 228 LATITUDE : 49 49.33750 N ! (deg min) LONGITUDE : 126 59.38980 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250722_193135 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:34 86 86 MERGEHDR 1.3 2026/01/16 10:35:48 86 86 HDREDIT2 3.2 2026/01/16 10:36:19 ? ? REMOVECH 8.2 2026/01/16 10:36:51 86 86 CALIB 12.1 2026/01/16 10:37:22 86 86 CLEAN 5.3 2026/01/16 10:37:58 86 86 $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 14.088 3.86550 4.94462 31.88 1500.11 1023.764 0.45 0.45 14.035 3.84181 4.92102 31.71 1499.73 1023.642 0.75 0.75 14.083 3.83672 4.90841 31.62 1499.80 1023.567 1.05 1.05 13.999 3.79730 4.86844 31.33 1499.18 1023.359 1.35 1.34 13.793 3.80031 4.89820 31.53 1498.74 1023.553 1.65 1.64 13.667 3.79913 4.91268 31.62 1498.44 1023.652 1.95 1.94 13.667 3.79584 4.90842 31.59 1498.41 1023.630 2.25 2.24 13.609 3.79703 4.91729 31.65 1498.29 1023.688 2.55 2.54 13.484 3.79591 4.93181 31.74 1497.99 1023.786 2.85 2.84 13.389 3.79506 4.94295 31.81 1497.76 1023.862 3.15 3.14 13.319 3.79113 4.94674 31.83 1497.56 1023.893 3.45 3.44 13.249 3.78730 4.95081 31.86 1497.36 1023.926 3.75 3.73 13.197 3.78304 4.95200 31.86 1497.20 1023.940 4.05 4.03 13.152 3.78085 4.95496 31.88 1497.07 1023.964 4.35 4.33 13.101 3.77810 4.95800 31.89 1496.93 1023.988 4.65 4.63 13.040 3.77542 4.96242 31.92 1496.76 1024.022 4.95 4.93 12.978 3.77352 4.96798 31.95 1496.59 1024.061 5.25 5.23 12.920 3.77111 4.97243 31.98 1496.44 1024.094 5.55 5.53 12.848 3.77011 4.98055 32.03 1496.26 1024.149 5.85 5.82 12.778 3.76346 4.98106 32.03 1496.02 1024.162 6.15 6.12 12.705 3.76124 4.98774 32.07 1495.83 1024.209 6.45 6.42 12.645 3.75288 4.98454 32.04 1495.60 1024.199 6.75 6.72 12.566 3.74778 4.98828 32.06 1495.36 1024.230 7.05 7.02 12.457 3.73956 4.99183 32.07 1495.01 1024.264 7.35 7.32 12.374 3.73274 4.99371 32.08 1494.74 1024.285 7.65 7.62 12.299 3.72623 4.99502 32.08 1494.49 1024.302 7.95 7.91 12.197 3.71823 4.99806 32.09 1494.16 1024.331 8.25 8.21 12.102 3.70865 4.99787 32.08 1493.83 1024.341 8.55 8.51 12.042 3.70407 4.99986 32.09 1493.63 1024.360 8.85 8.81 11.964 3.69739 5.00137 32.09 1493.37 1024.378 9.15 9.11 11.887 3.69408 5.00724 32.12 1493.15 1024.419 9.45 9.41 11.804 3.69091 5.01425 32.17 1492.92 1024.468 9.75 9.71 11.744 3.68340 5.01228 32.15 1492.69 1024.464 10.05 10.00 11.670 3.67737 5.01409 32.15 1492.45 1024.483 10.35 10.30 11.628 3.67213 5.01278 32.14 1492.29 1024.481 10.65 10.60 11.603 3.66759 5.00999 32.11 1492.18 1024.469 10.95 10.90 11.567 3.66479 5.01100 32.12 1492.06 1024.479 11.25 11.20 11.529 3.65965 5.00920 32.10 1491.92 1024.474 11.55 11.50 11.471 3.65416 5.00967 32.10 1491.71 1024.484 11.85 11.79 11.421 3.65153 5.01292 32.11 1491.57 1024.508 12.15 12.09 11.396 3.65020 5.01458 32.12 1491.49 1024.521 12.45 12.39 11.371 3.65012 5.01795 32.14 1491.44 1024.543 12.75 12.69 11.344 3.64895 5.02005 32.16 1491.36 1024.558 13.05 12.99 11.319 3.64609 5.01952 32.15 1491.27 1024.559 13.35 13.29 11.296 3.64638 5.02311 32.17 1491.22 1024.582 13.65 13.59 11.280 3.64426 5.02242 32.16 1491.16 1024.581 13.95 13.88 11.261 3.64309 5.02346 32.17 1491.11 1024.590 14.25 14.18 11.244 3.63882 5.01985 32.14 1491.02 1024.572 14.55 14.48 11.225 3.63647 5.01926 32.14 1490.95 1024.572 14.85 14.78 11.207 3.63541 5.02035 32.14 1490.90 1024.581 15.15 15.08 11.186 3.63421 5.02162 32.15 1490.84 1024.591 15.45 15.38 11.167 3.63144 5.02031 32.14 1490.76 1024.587 15.75 15.67 11.148 3.63049 5.02168 32.14 1490.71 1024.597 16.05 15.97 11.130 3.62881 5.02191 32.14 1490.65 1024.601 16.35 16.27 11.117 3.62910 5.02412 32.16 1490.62 1024.616 16.65 16.57 11.114 3.62979 5.02553 32.17 1490.63 1024.625 16.95 16.87 11.128 3.62966 5.02337 32.15 1490.67 1024.613 17.25 17.17 11.112 3.62824 5.02355 32.15 1490.62 1024.617 17.55 17.47 11.094 3.62705 5.02439 32.16 1490.56 1024.625 17.85 17.76 11.080 3.62626 5.02535 32.16 1490.52 1024.632 18.15 18.06 11.071 3.62614 5.02633 32.17 1490.51 1024.640 18.45 18.36 11.055 3.62498 5.02705 32.17 1490.46 1024.646 18.75 18.66 11.047 3.62351 5.02607 32.16 1490.43 1024.643 19.05 18.96 11.044 3.62224 5.02471 32.15 1490.41 1024.637 19.35 19.26 11.035 3.62147 5.02490 32.15 1490.38 1024.640 19.65 19.55 11.016 3.61989 5.02542 32.15 1490.32 1024.646 19.95 19.85 11.004 3.62029 5.02756 32.17 1490.30 1024.660 20.25 20.15 11.000 3.62162 5.02998 32.18 1490.31 1024.675 20.55 20.45 11.003 3.62097 5.02874 32.17 1490.31 1024.669 20.85 20.75 10.994 3.61774 5.02543 32.15 1490.26 1024.653 21.15 21.05 10.978 3.61868 5.02904 32.17 1490.23 1024.675 21.45 21.35 10.973 3.61766 5.02823 32.17 1490.22 1024.672 21.75 21.64 10.968 3.61896 5.03080 32.18 1490.22 1024.688 22.05 21.94 10.976 3.61880 5.02949 32.18 1490.25 1024.682 22.35 22.24 10.957 3.61627 5.02860 32.17 1490.17 1024.680 22.65 22.54 10.919 3.61521 5.03250 32.19 1490.07 1024.706 22.95 22.84 10.888 3.61372 5.03468 32.20 1489.98 1024.722 23.25 23.14 10.901 3.61202 5.03053 32.17 1490.00 1024.699 23.55 23.43 10.921 3.61324 5.02943 32.17 1490.07 1024.692 23.85 23.73 10.924 3.60552 5.01829 32.09 1489.99 1024.632 24.15 24.03 10.839 3.59462 5.01496 32.06 1489.65 1024.622 24.45 24.33 10.723 3.58713 5.02069 32.08 1489.28 1024.664 24.75 24.63 10.647 3.58271 5.02521 32.11 1489.04 1024.696 25.05 24.93 10.580 3.57610 5.02543 32.10 1488.80 1024.704 25.35 25.22 10.474 3.57111 5.03344 32.14 1488.48 1024.757 25.76 25.63 10.451 3.57100 5.03654 32.16 1488.42 1024.778