*2026/01/16 10:37:43.23 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/01/21 17:49:22.000 END TIME : UTC 2025/01/21 17:49:36.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 75 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 22.39 2 Depth metres 0.15 22.39 3 Temperature 'deg C (ITS90)' 8.409 9.389 4 Conductivity S/m 2.48872 2.89392 5 Conductance:Specific S/m 3.69879 4.21775 6 Salinity PSS-78 22.71 26.31 7 Speed:Sound m/s 1469.43 1477.07 8 Density kg/m^3 1017.564 1020.381 $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 : 5 LATITUDE : 49 8.94560 N ! (deg min) LONGITUDE : 125 47.46160 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250121_174922 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:22 75 75 MERGEHDR 1.3 2026/01/16 10:35:37 75 75 HDREDIT2 3.2 2026/01/16 10:36:08 ? ? REMOVECH 8.2 2026/01/16 10:36:36 75 75 CALIB 12.1 2026/01/16 10:37:09 75 75 CLEAN 5.3 2026/01/16 10:37:43 75 75 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:08 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 10:36:36 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:09 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 8.642 2.48872 3.69879 22.71 1469.79 1017.564 0.45 0.45 8.627 2.49118 3.70410 22.75 1469.78 1017.594 0.75 0.75 8.688 2.50235 3.71403 22.82 1470.10 1017.644 1.05 1.05 8.665 2.56129 3.80409 23.43 1470.76 1018.122 1.35 1.35 8.607 2.58385 3.84424 23.69 1470.87 1018.338 1.65 1.65 8.528 2.56551 3.82594 23.56 1470.41 1018.246 1.95 1.95 8.423 2.52667 3.77982 23.24 1469.61 1018.009 2.25 2.25 8.409 2.51539 3.76456 23.13 1469.43 1017.930 2.55 2.55 8.466 2.54654 3.80469 23.41 1470.00 1018.141 2.85 2.85 8.543 2.60276 3.87976 23.92 1470.93 1018.535 3.15 3.15 8.635 2.65428 3.94572 24.38 1471.85 1018.882 3.45 3.45 8.852 2.67487 3.95078 24.44 1472.76 1018.899 3.75 3.75 8.980 2.70500 3.98026 24.65 1473.51 1019.050 4.05 4.05 9.034 2.70953 3.98058 24.66 1473.73 1019.050 4.35 4.35 9.073 2.71379 3.98230 24.68 1473.90 1019.059 4.65 4.65 9.105 2.73841 4.01463 24.90 1474.30 1019.230 4.95 4.95 9.131 2.74295 4.01823 24.93 1474.44 1019.249 5.25 5.25 9.176 2.74875 4.02149 24.95 1474.64 1019.265 5.55 5.55 9.236 2.76484 4.03795 25.07 1475.02 1019.351 5.85 5.85 9.255 2.77452 4.04977 25.16 1475.20 1019.414 6.15 6.15 9.294 2.77726 4.04922 25.16 1475.35 1019.410 6.45 6.45 9.356 2.80837 4.08717 25.42 1475.91 1019.610 6.75 6.75 9.358 2.81404 4.09520 25.48 1475.99 1019.654 7.05 7.05 9.349 2.80811 4.08762 25.42 1475.90 1019.616 7.35 7.35 9.354 2.80763 4.08637 25.42 1475.91 1019.610 7.65 7.65 9.360 2.81167 4.09151 25.45 1475.98 1019.638 7.95 7.95 9.357 2.81156 4.09173 25.45 1475.98 1019.641 8.25 8.25 9.353 2.81558 4.09802 25.50 1476.02 1019.676 8.55 8.55 9.352 2.81738 4.10075 25.51 1476.04 1019.692 8.85 8.85 9.350 2.82035 4.10535 25.55 1476.08 1019.718 9.15 9.15 9.354 2.82598 4.11305 25.60 1476.16 1019.760 9.45 9.45 9.361 2.82671 4.11321 25.60 1476.20 1019.762 9.75 9.75 9.369 2.83687 4.12710 25.70 1476.35 1019.837 10.05 10.05 9.380 2.84184 4.13303 25.74 1476.44 1019.869 10.35 10.35 9.389 2.83791 4.12622 25.69 1476.43 1019.834 10.65 10.65 9.387 2.84041 4.13011 25.72 1476.46 1019.856 10.95 10.95 9.383 2.84575 4.13835 25.77 1476.51 1019.902 11.25 11.25 9.361 2.85575 4.15547 25.89 1476.58 1019.996 11.55 11.55 9.347 2.86119 4.16516 25.95 1476.61 1020.050 11.85 11.85 9.342 2.86541 4.17184 26.00 1476.65 1020.087 12.15 12.15 9.348 2.86874 4.17605 26.03 1476.71 1020.111 12.45 12.45 9.351 2.87081 4.17859 26.05 1476.75 1020.125 12.75 12.75 9.347 2.87452 4.18449 26.09 1476.79 1020.158 13.05 13.05 9.346 2.87284 4.18220 26.07 1476.77 1020.148 13.35 13.35 9.341 2.87561 4.18688 26.10 1476.80 1020.174 13.65 13.65 9.337 2.87689 4.18921 26.12 1476.80 1020.188 13.95 13.95 9.330 2.87399 4.18582 26.09 1476.76 1020.172 14.25 14.25 9.336 2.86739 4.17547 26.02 1476.70 1020.117 14.55 14.55 9.344 2.85621 4.15826 25.91 1476.59 1020.026 14.85 14.85 9.350 2.85549 4.15642 25.89 1476.60 1020.017 15.15 15.15 9.340 2.85871 4.16240 25.93 1476.62 1020.051 15.45 15.45 9.345 2.85993 4.16350 25.94 1476.65 1020.058 15.75 15.75 9.353 2.85948 4.16191 25.93 1476.67 1020.050 16.05 16.05 9.356 2.85333 4.15256 25.87 1476.61 1020.001 16.35 16.35 9.331 2.87467 4.18667 26.10 1476.80 1020.187 16.65 16.65 9.326 2.87925 4.19402 26.15 1476.85 1020.228 16.95 16.95 9.329 2.88281 4.19875 26.18 1476.91 1020.254 17.25 17.25 9.329 2.88483 4.20176 26.20 1476.94 1020.271 17.55 17.55 9.327 2.88425 4.20117 26.20 1476.93 1020.270 17.85 17.85 9.327 2.88457 4.20165 26.20 1476.94 1020.274 18.15 18.15 9.329 2.88440 4.20111 26.20 1476.95 1020.272 18.45 18.45 9.329 2.88413 4.20072 26.19 1476.95 1020.271 18.75 18.75 9.329 2.88341 4.19964 26.19 1476.94 1020.267 19.05 19.05 9.328 2.88442 4.20130 26.20 1476.96 1020.277 19.35 19.35 9.329 2.88590 4.20328 26.21 1476.98 1020.289 19.65 19.65 9.325 2.88637 4.20446 26.22 1476.98 1020.297 19.95 19.95 9.325 2.88770 4.20643 26.23 1477.00 1020.308 20.25 20.25 9.325 2.88772 4.20641 26.23 1477.01 1020.310 20.55 20.55 9.326 2.88846 4.20739 26.24 1477.02 1020.316 20.85 20.85 9.321 2.89011 4.21043 26.26 1477.04 1020.334 21.15 21.15 9.320 2.88881 4.20860 26.25 1477.02 1020.325 21.45 21.44 9.318 2.88882 4.20886 26.25 1477.02 1020.328 21.75 21.74 9.318 2.88899 4.20909 26.25 1477.03 1020.331 22.05 22.04 9.311 2.89326 4.21617 26.30 1477.07 1020.370 22.39 22.39 9.306 2.89392 4.21775 26.31 1477.06 1020.381