*2026/01/16 10:37:47.22 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/02/18 20:47:27.000 END TIME : UTC 2025/02/18 20:47:38.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 56 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 16.78 2 Depth metres 0.15 16.71 3 Temperature 'deg C (ITS90)' 8.13 8.613 4 Conductivity S/m 3.2459 3.26153 5 Conductance:Specific S/m 4.84926 4.90092 6 Salinity PSS-78 30.6 30.89 7 Speed:Sound m/s 1478.12 1479.41 8 Density kg/m^3 1023.746 1024.107 $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 : 43 LATITUDE : 49 50.90180 N ! (deg min) LONGITUDE : 126 54.50580 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250218_204727 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:24 56 56 MERGEHDR 1.3 2026/01/16 10:35:39 56 56 HDREDIT2 3.2 2026/01/16 10:36:09 ? ? REMOVECH 8.2 2026/01/16 10:36:37 56 56 CALIB 12.1 2026/01/16 10:37:10 56 56 CLEAN 5.3 2026/01/16 10:37:47 56 56 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:09 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 10:36:37 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:10 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 8.409 3.25852 4.87669 30.77 1478.79 1023.896 0.45 0.45 8.445 3.24775 4.85537 30.63 1478.76 1023.780 0.75 0.75 8.480 3.25720 4.86446 30.69 1478.98 1023.830 1.05 1.05 8.526 3.25688 4.85729 30.65 1479.10 1023.790 1.35 1.34 8.581 3.25686 4.84926 30.60 1479.25 1023.746 1.65 1.64 8.599 3.25946 4.85060 30.61 1479.34 1023.754 1.95 1.94 8.604 3.26003 4.85065 30.62 1479.37 1023.755 2.25 2.24 8.613 3.26095 4.85079 30.62 1479.41 1023.757 2.55 2.54 8.582 3.26127 4.85568 30.65 1479.33 1023.786 2.85 2.84 8.542 3.26087 4.86086 30.68 1479.22 1023.817 3.15 3.14 8.524 3.26106 4.86383 30.70 1479.18 1023.835 3.45 3.43 8.509 3.26143 4.86651 30.71 1479.15 1023.851 3.75 3.73 8.503 3.25955 4.86456 30.70 1479.12 1023.842 4.05 4.03 8.498 3.25789 4.86277 30.68 1479.09 1023.834 4.35 4.33 8.497 3.26153 4.86841 30.72 1479.13 1023.866 4.65 4.63 8.491 3.26078 4.86807 30.72 1479.12 1023.865 4.95 4.93 8.487 3.26140 4.86965 30.73 1479.12 1023.875 5.25 5.23 8.489 3.26113 4.86903 30.73 1479.12 1023.873 5.55 5.53 8.478 3.26118 4.87069 30.74 1479.10 1023.884 5.85 5.82 8.468 3.26134 4.87232 30.75 1479.08 1023.895 6.15 6.12 8.467 3.26084 4.87179 30.74 1479.07 1023.893 6.45 6.42 8.462 3.26033 4.87162 30.74 1479.06 1023.893 6.75 6.72 8.452 3.25953 4.87199 30.74 1479.03 1023.897 7.05 7.02 8.431 3.25892 4.87406 30.75 1478.97 1023.910 7.35 7.32 8.409 3.25930 4.87786 30.77 1478.92 1023.933 7.65 7.62 8.403 3.25831 4.87729 30.77 1478.89 1023.931 7.95 7.91 8.391 3.25842 4.87924 30.78 1478.86 1023.944 8.25 8.21 8.377 3.25787 4.88045 30.79 1478.82 1023.952 8.55 8.51 8.363 3.25729 4.88164 30.79 1478.78 1023.960 8.85 8.81 8.352 3.25682 4.88252 30.80 1478.75 1023.967 9.15 9.11 8.341 3.25539 4.88195 30.79 1478.71 1023.965 9.45 9.41 8.331 3.25412 4.88152 30.79 1478.67 1023.964 9.75 9.71 8.316 3.25304 4.88205 30.79 1478.62 1023.969 10.05 10.01 8.282 3.25267 4.88651 30.82 1478.53 1023.995 10.35 10.30 8.265 3.25283 4.88933 30.83 1478.49 1024.013 10.65 10.60 8.263 3.25189 4.88812 30.82 1478.48 1024.007 10.95 10.90 8.250 3.24937 4.88620 30.81 1478.42 1023.998 11.25 11.20 8.232 3.24904 4.88836 30.82 1478.37 1024.012 11.55 11.50 8.218 3.24903 4.89040 30.83 1478.33 1024.025 11.85 11.80 8.207 3.24889 4.89183 30.84 1478.31 1024.034 12.15 12.10 8.202 3.24865 4.89223 30.84 1478.29 1024.038 12.45 12.39 8.194 3.24824 4.89283 30.85 1478.27 1024.042 12.75 12.69 8.185 3.24771 4.89337 30.85 1478.24 1024.047 13.05 12.99 8.173 3.24756 4.89490 30.86 1478.21 1024.057 13.35 13.29 8.164 3.24719 4.89565 30.86 1478.19 1024.062 13.65 13.59 8.157 3.24680 4.89608 30.86 1478.17 1024.066 13.95 13.89 8.149 3.24597 4.89607 30.86 1478.14 1024.068 14.25 14.19 8.139 3.24590 4.89734 30.87 1478.12 1024.076 14.55 14.48 8.137 3.24590 4.89771 30.87 1478.12 1024.079 14.85 14.78 8.135 3.24598 4.89804 30.87 1478.12 1024.083 15.15 15.08 8.135 3.24653 4.89895 30.88 1478.13 1024.089 15.45 15.38 8.132 3.24621 4.89884 30.88 1478.13 1024.090 15.75 15.68 8.131 3.24617 4.89897 30.88 1478.13 1024.092 16.05 15.98 8.130 3.24717 4.90071 30.89 1478.14 1024.103 16.35 16.28 8.130 3.24685 4.90012 30.88 1478.14 1024.100 16.78 16.71 8.132 3.24757 4.90092 30.89 1478.16 1024.107