*2026/01/16 10:37:56.61 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/25 19:03:48.000 END TIME : UTC 2025/06/25 19:04:01.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 69 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.63 2 Depth metres 0.15 20.63 3 Temperature 'deg C (ITS90)' 10.339 18.612 4 Conductivity S/m 0.95209 3.51168 5 Conductance:Specific S/m 1.09239 4.91194 6 Salinity PSS-78 6.18 31.27 7 Speed:Sound m/s 1484.95 1496.41 8 Density kg/m^3 1003.194 1024.077 $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 : 190 LATITUDE : 49 13.44020 N ! (deg min) LONGITUDE : 124 49.55260 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250625_190348 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:32 69 69 MERGEHDR 1.3 2026/01/16 10:35:46 69 69 HDREDIT2 3.2 2026/01/16 10:36:17 ? ? REMOVECH 8.2 2026/01/16 10:36:48 69 69 CALIB 12.1 2026/01/16 10:37:19 69 69 CLEAN 5.3 2026/01/16 10:37:56 69 69 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:17 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 10:36:48 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:19 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 18.612 0.95293 1.09250 6.18 1485.12 1003.194 0.45 0.46 18.599 0.95255 1.09239 6.18 1485.08 1003.197 0.75 0.76 18.585 0.95237 1.09255 6.18 1485.04 1003.202 1.05 1.07 18.565 0.95209 1.09272 6.18 1484.99 1003.208 1.35 1.37 18.551 0.95240 1.09344 6.19 1484.95 1003.216 1.65 1.68 18.549 0.95347 1.09472 6.19 1484.96 1003.224 1.95 1.98 18.568 0.95325 1.09399 6.19 1485.02 1003.218 2.25 2.29 18.572 0.95693 1.09812 6.21 1485.06 1003.237 2.55 2.59 18.557 0.96702 1.11005 6.29 1485.11 1003.297 2.85 2.90 18.545 0.98545 1.13153 6.42 1485.22 1003.400 3.15 3.20 18.508 1.01809 1.16999 6.65 1485.38 1003.588 3.45 3.51 18.393 1.13559 1.30851 7.51 1485.99 1004.260 3.75 3.81 17.904 1.47920 1.72384 10.11 1487.41 1006.338 4.05 4.11 17.378 1.91828 2.26330 13.58 1489.68 1009.088 4.35 4.42 16.519 2.30250 2.77284 16.93 1490.77 1011.817 4.65 4.72 15.544 2.85957 3.52646 22.00 1493.45 1015.893 4.95 5.02 14.738 3.35900 4.22644 26.83 1496.41 1019.757 5.25 5.32 13.903 3.44403 4.42647 28.18 1495.24 1020.967 5.55 5.62 13.392 3.47883 4.53071 28.88 1494.36 1021.607 5.85 5.92 13.032 3.49322 4.59246 29.29 1493.64 1021.992 6.15 6.22 12.736 3.50081 4.63860 29.59 1492.99 1022.282 6.45 6.51 12.547 3.50875 4.67254 29.81 1492.62 1022.492 6.75 6.81 12.382 3.51097 4.69609 29.96 1492.24 1022.641 7.05 7.11 12.202 3.51168 4.71974 30.11 1491.80 1022.792 7.35 7.41 12.061 3.51142 4.73729 30.22 1491.46 1022.905 7.65 7.71 11.968 3.50943 4.74661 30.28 1491.21 1022.968 7.95 8.01 11.889 3.50800 4.75483 30.33 1491.00 1023.023 8.25 8.31 11.781 3.50783 4.76850 30.42 1490.73 1023.110 8.55 8.61 11.737 3.50765 4.77397 30.45 1490.62 1023.146 8.85 8.91 11.693 3.50734 4.77926 30.48 1490.51 1023.180 9.15 9.20 11.647 3.50733 4.78535 30.52 1490.40 1023.220 9.45 9.50 11.605 3.50595 4.78887 30.54 1490.29 1023.245 9.75 9.80 11.576 3.50655 4.79354 30.57 1490.23 1023.274 10.05 10.10 11.556 3.50596 4.79533 30.58 1490.17 1023.287 10.35 10.40 11.532 3.50615 4.79869 30.60 1490.12 1023.309 10.65 10.70 11.492 3.50514 4.80259 30.63 1490.01 1023.336 10.95 11.00 11.450 3.50335 4.80564 30.65 1489.89 1023.358 11.25 11.30 11.420 3.50337 4.80966 30.67 1489.82 1023.384 11.55 11.60 11.373 3.50246 4.81458 30.70 1489.70 1023.417 11.85 11.89 11.325 3.50117 4.81923 30.73 1489.57 1023.448 12.15 12.19 11.251 3.49983 4.82728 30.78 1489.37 1023.501 12.45 12.49 11.167 3.49697 4.83443 30.82 1489.13 1023.549 12.75 12.79 11.118 3.49516 4.83854 30.84 1488.99 1023.577 13.05 13.09 11.047 3.49316 4.84525 30.88 1488.79 1023.622 13.35 13.39 10.964 3.49075 4.85308 30.93 1488.56 1023.673 13.65 13.69 10.861 3.48720 4.86216 30.98 1488.26 1023.733 13.95 13.99 10.760 3.48312 4.87016 31.02 1487.96 1023.787 14.25 14.28 10.702 3.48070 4.87471 31.05 1487.79 1023.818 14.55 14.58 10.661 3.47960 4.87871 31.07 1487.67 1023.844 14.85 14.88 10.616 3.47828 4.88301 31.10 1487.55 1023.872 15.15 15.18 10.579 3.47804 4.88778 31.13 1487.46 1023.903 15.45 15.48 10.534 3.47692 4.89233 31.15 1487.33 1023.933 15.75 15.78 10.499 3.47641 4.89646 31.18 1487.24 1023.959 16.05 16.08 10.484 3.47593 4.89792 31.19 1487.20 1023.970 16.35 16.38 10.475 3.47573 4.89883 31.19 1487.18 1023.977 16.65 16.67 10.467 3.47448 4.89813 31.19 1487.15 1023.975 16.95 16.97 10.457 3.47503 4.90039 31.20 1487.14 1023.989 17.25 17.27 10.448 3.47460 4.90100 31.20 1487.11 1023.995 17.55 17.57 10.442 3.47454 4.90172 31.21 1487.10 1024.000 17.85 17.87 10.439 3.47424 4.90178 31.21 1487.10 1024.002 18.15 18.17 10.436 3.47413 4.90196 31.21 1487.09 1024.004 18.45 18.47 10.437 3.47367 4.90118 31.20 1487.09 1024.001 18.75 18.76 10.443 3.47446 4.90152 31.21 1487.12 1024.004 19.05 19.06 10.444 3.47483 4.90191 31.21 1487.13 1024.007 19.35 19.36 10.443 3.47372 4.90044 31.20 1487.12 1024.001 19.65 19.66 10.424 3.47211 4.90080 31.20 1487.06 1024.005 19.95 19.96 10.394 3.47049 4.90265 31.21 1486.97 1024.019 20.25 20.26 10.360 3.47089 4.90794 31.24 1486.89 1024.052 20.63 20.63 10.339 3.47164 4.91194 31.27 1486.85 1024.077