*2026/01/16 09:47:03.48 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/11/22 19:31:34.000 END TIME : UTC 2023/11/22 19:31:42.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 41 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 12.09 2 Depth metres 0.15 12.06 3 Temperature 'deg C (ITS90)' 9.315 11.315 4 Conductivity S/m 2.30363 3.42838 5 Conductance:Specific S/m 3.34769 4.72094 6 Salinity PSS-78 20.43 30.03 7 Speed:Sound m/s 1469.78 1488.69 8 Density kg/m^3 1015.683 1022.912 $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 : 2023-031 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 74 LATITUDE : 49 51.36450 N ! (deg min) LONGITUDE : 126 58.46630 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231122_193134 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:52 41 41 MERGEHDR 1.3 2026/01/15 13:41:47 41 41 HDREDIT2 3.2 2026/01/15 14:00:56 ? ? REMOVECH 8.2 2026/01/15 14:01:18 41 41 CALIB 12.1 2026/01/16 09:46:06 41 41 CLEAN 5.3 2026/01/16 09:47:03 41 41 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:56 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 2026/01/15 14:01:18 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:06 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 09:47:01 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 9.315 2.31594 3.37450 20.60 1469.78 1015.827 0.45 0.45 9.406 2.30363 3.34769 20.43 1469.93 1015.683 0.75 0.75 9.760 2.46483 3.54550 21.78 1472.91 1016.692 1.05 1.05 10.072 2.64530 3.77126 23.34 1475.96 1017.858 1.35 1.35 10.157 2.92614 4.16151 26.02 1479.52 1019.931 1.65 1.65 10.243 2.95712 4.19532 26.26 1480.14 1020.107 1.95 1.95 10.318 2.96262 4.19419 26.26 1480.41 1020.097 2.25 2.25 10.400 2.97183 4.19748 26.29 1480.76 1020.109 2.55 2.55 10.487 2.99538 4.22036 26.46 1481.28 1020.226 2.85 2.85 10.567 3.08705 4.33973 27.29 1482.58 1020.864 3.15 3.15 10.689 3.17769 4.45193 28.08 1483.98 1021.462 3.45 3.45 10.810 3.22255 4.49952 28.43 1484.84 1021.712 3.75 3.75 10.926 3.25569 4.53105 28.66 1485.54 1021.874 4.05 4.05 10.999 3.30975 4.59696 29.13 1486.37 1022.228 4.35 4.35 11.057 3.32835 4.61534 29.27 1486.74 1022.324 4.65 4.65 11.101 3.33524 4.61929 29.30 1486.94 1022.343 4.95 4.95 11.122 3.34145 4.62521 29.34 1487.07 1022.375 5.25 5.25 11.134 3.34399 4.62714 29.36 1487.14 1022.386 5.55 5.54 11.142 3.34527 4.62794 29.36 1487.18 1022.391 5.85 5.84 11.147 3.34562 4.62775 29.36 1487.20 1022.390 6.15 6.14 11.150 3.34764 4.63014 29.38 1487.24 1022.404 6.45 6.44 11.154 3.34794 4.63014 29.38 1487.25 1022.405 6.75 6.74 11.154 3.34809 4.63029 29.38 1487.26 1022.407 7.05 7.04 11.158 3.34820 4.62999 29.38 1487.28 1022.407 7.35 7.34 11.168 3.34799 4.62844 29.37 1487.30 1022.399 7.65 7.64 11.182 3.34983 4.62918 29.37 1487.37 1022.403 7.95 7.94 11.190 3.35999 4.64213 29.47 1487.51 1022.474 8.25 8.24 11.207 3.38366 4.67265 29.68 1487.84 1022.640 8.55 8.54 11.219 3.39664 4.68900 29.80 1488.02 1022.730 8.85 8.83 11.239 3.40203 4.69385 29.83 1488.14 1022.756 9.15 9.13 11.247 3.40394 4.69549 29.85 1488.19 1022.766 9.45 9.43 11.254 3.40920 4.70188 29.89 1488.27 1022.801 9.75 9.73 11.259 3.41419 4.70807 29.94 1488.35 1022.836 10.05 10.03 11.276 3.41639 4.70890 29.94 1488.42 1022.840 10.35 10.33 11.291 3.41889 4.71042 29.96 1488.49 1022.848 10.65 10.63 11.294 3.42267 4.71521 29.99 1488.55 1022.875 10.95 10.93 11.286 3.42384 4.71790 30.01 1488.55 1022.892 11.25 11.23 11.289 3.42172 4.71454 29.98 1488.54 1022.875 11.55 11.53 11.280 3.42129 4.71518 29.99 1488.51 1022.880 11.85 11.82 11.293 3.42672 4.72094 30.03 1488.62 1022.912 12.09 12.06 11.315 3.42838 4.72039 30.03 1488.69 1022.908