*2026/01/16 10:37:55.66 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/23 23:26:30.000 END TIME : UTC 2025/06/23 23:26:42.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 62 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.32 2 Depth metres 0.15 18.31 3 Temperature 'deg C (ITS90)' 11.359 17.098 4 Conductivity S/m 1.40538 3.25244 5 Conductance:Specific S/m 1.66919 4.40599 6 Salinity PSS-78 9.75 27.86 7 Speed:Sound m/s 1484.37 1494.44 8 Density kg/m^3 1006.212 1021.17 $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 : 176 LATITUDE : 49 8.58070 N ! (deg min) LONGITUDE : 125 40.75070 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250623_232630 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:31 62 62 MERGEHDR 1.3 2026/01/16 10:35:45 62 62 HDREDIT2 3.2 2026/01/16 10:36:17 ? ? REMOVECH 8.2 2026/01/16 10:36:44 62 62 CALIB 12.1 2026/01/16 10:37:19 62 62 CLEAN 5.3 2026/01/16 10:37:55 62 62 $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 10:36:44 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 17.098 1.40538 1.66919 9.75 1484.37 1006.212 0.45 0.46 16.568 1.97519 2.37587 14.30 1487.86 1009.785 0.75 0.76 15.920 2.13957 2.61431 15.86 1487.54 1011.102 1.05 1.06 15.191 2.87386 3.57527 22.33 1492.61 1016.193 1.35 1.36 14.778 3.11689 3.91787 24.67 1493.98 1018.079 1.65 1.66 14.575 3.15792 3.98977 25.16 1493.89 1018.496 1.95 1.96 14.565 3.21411 4.06181 25.66 1494.44 1018.885 2.25 2.26 14.077 3.20154 4.09645 25.88 1493.08 1019.146 2.55 2.56 13.620 3.19970 4.14255 26.17 1491.90 1019.460 2.85 2.86 13.408 3.19909 4.16457 26.31 1491.35 1019.609 3.15 3.16 13.200 3.18995 4.17528 26.37 1490.72 1019.695 3.45 3.46 12.996 3.18460 4.19071 26.46 1490.14 1019.806 3.75 3.76 12.834 3.18293 4.20646 26.56 1489.71 1019.913 4.05 4.06 12.714 3.18645 4.22453 26.68 1489.44 1020.026 4.35 4.36 12.635 3.18687 4.23386 26.74 1489.24 1020.088 4.65 4.66 12.532 3.18297 4.24031 26.77 1488.94 1020.136 4.95 4.96 12.433 3.17668 4.24318 26.78 1488.61 1020.165 5.25 5.26 12.356 3.16697 4.23892 26.75 1488.31 1020.152 5.55 5.56 12.273 3.16489 4.24554 26.79 1488.07 1020.198 5.85 5.86 12.169 3.16406 4.25632 26.85 1487.80 1020.270 6.15 6.16 12.071 3.16394 4.26744 26.92 1487.54 1020.342 6.45 6.46 11.990 3.15358 4.26269 26.88 1487.22 1020.327 6.75 6.76 11.949 3.15006 4.26270 26.88 1487.07 1020.332 7.05 7.06 11.877 3.14658 4.26627 26.90 1486.85 1020.361 7.35 7.36 11.799 3.14542 4.27378 26.94 1486.63 1020.411 7.65 7.66 11.733 3.14410 4.27963 26.98 1486.45 1020.451 7.95 7.96 11.683 3.14148 4.28188 26.99 1486.29 1020.469 8.25 8.26 11.643 3.13849 4.28258 26.99 1486.15 1020.479 8.55 8.56 11.598 3.13893 4.28842 27.03 1486.05 1020.516 8.85 8.86 11.568 3.13857 4.29140 27.05 1485.97 1020.536 9.15 9.16 11.550 3.13874 4.29376 27.06 1485.93 1020.552 9.45 9.46 11.542 3.13837 4.29417 27.06 1485.90 1020.557 9.75 9.76 11.516 3.14479 4.30610 27.14 1485.91 1020.625 10.05 10.05 11.488 3.14949 4.31581 27.21 1485.90 1020.682 10.35 10.35 11.471 3.14975 4.31820 27.22 1485.86 1020.698 10.65 10.65 11.450 3.14776 4.31797 27.22 1485.78 1020.700 10.95 10.95 11.429 3.14802 4.32079 27.24 1485.74 1020.718 11.25 11.25 11.399 3.15023 4.32730 27.28 1485.69 1020.758 11.55 11.55 11.382 3.15015 4.32927 27.29 1485.65 1020.771 11.85 11.85 11.369 3.14980 4.33039 27.30 1485.61 1020.780 12.15 12.15 11.362 3.15146 4.33348 27.32 1485.62 1020.798 12.45 12.45 11.359 3.15480 4.33840 27.35 1485.65 1020.827 12.75 12.75 11.359 3.15677 4.34106 27.37 1485.68 1020.842 13.05 13.05 11.369 3.16056 4.34513 27.40 1485.76 1020.865 13.35 13.35 11.381 3.16341 4.34757 27.42 1485.83 1020.878 13.65 13.65 11.404 3.16705 4.34984 27.44 1485.93 1020.889 13.95 13.95 11.431 3.17102 4.35211 27.46 1486.05 1020.900 14.25 14.25 11.458 3.17577 4.35539 27.48 1486.18 1020.916 14.55 14.55 11.489 3.18169 4.35979 27.51 1486.34 1020.938 14.85 14.85 11.532 3.18332 4.35691 27.50 1486.48 1020.920 15.15 15.15 11.581 3.19505 4.36707 27.57 1486.75 1020.971 15.45 15.45 11.625 3.20357 4.37343 27.62 1486.96 1021.002 15.75 15.75 11.661 3.20782 4.37502 27.64 1487.11 1021.009 16.05 16.05 11.699 3.21262 4.37699 27.65 1487.27 1021.017 16.35 16.35 11.731 3.21505 4.37650 27.65 1487.39 1021.012 16.65 16.65 11.740 3.21834 4.37992 27.68 1487.45 1021.031 16.95 16.94 11.742 3.23348 4.40026 27.82 1487.63 1021.142 17.25 17.24 11.783 3.24135 4.40599 27.86 1487.84 1021.170 17.55 17.54 11.847 3.24425 4.40229 27.84 1488.04 1021.144 17.85 17.84 11.901 3.24834 4.40141 27.84 1488.23 1021.135 18.15 18.14 11.959 3.25244 4.40005 27.84 1488.43 1021.123 18.32 18.31 12.056 3.24847 4.38313 27.73 1488.65 1021.021