*2026/01/16 10:37:44.35 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/01/22 20:27:11.000 END TIME : UTC 2025/01/22 20:27:19.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 42 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 12.47 2 Depth metres 0.15 12.42 3 Temperature 'deg C (ITS90)' 8.126 10.331 4 Conductivity S/m 2.71942 3.45074 5 Conductance:Specific S/m 4.0984 4.92442 6 Salinity PSS-78 25.37 31.28 7 Speed:Sound m/s 1471.26 1486.32 8 Density kg/m^3 1019.701 1024.111 $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 : 17 LATITUDE : 48 58.97350 N ! (deg min) LONGITUDE : 124 54.75850 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250122_202711 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:23 42 42 MERGEHDR 1.3 2026/01/16 10:35:38 42 42 HDREDIT2 3.2 2026/01/16 10:36:08 ? ? REMOVECH 8.2 2026/01/16 10:36:36 42 42 CALIB 12.1 2026/01/16 10:37:09 42 42 CLEAN 5.3 2026/01/16 10:37:44 42 42 $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 8.412 2.74651 4.11007 25.48 1472.29 1019.753 0.45 0.45 8.177 2.71942 4.09840 25.37 1471.26 1019.701 0.75 0.75 8.126 2.79051 4.21203 26.14 1472.01 1020.311 1.05 1.05 8.227 2.84256 4.27754 26.60 1472.97 1020.660 1.35 1.35 8.563 2.95397 4.40069 27.49 1475.36 1021.310 1.65 1.65 8.691 3.06824 4.55349 28.56 1477.16 1022.132 1.95 1.95 8.950 3.18523 4.69113 29.55 1479.36 1022.870 2.25 2.25 9.241 3.34927 4.89070 30.98 1482.20 1023.949 2.55 2.54 9.708 3.41831 4.92442 31.28 1484.29 1024.111 2.85 2.84 9.995 3.43293 4.90494 31.18 1485.22 1023.987 3.15 3.14 10.163 3.43652 4.88655 31.07 1485.70 1023.876 3.45 3.44 10.245 3.43664 4.87536 31.00 1485.92 1023.810 3.75 3.74 10.295 3.43762 4.86990 30.97 1486.06 1023.778 4.05 4.04 10.305 3.43721 4.86786 30.96 1486.09 1023.767 4.35 4.34 10.305 3.43848 4.86965 30.97 1486.11 1023.778 4.65 4.64 10.311 3.43937 4.87010 30.98 1486.14 1023.781 4.95 4.93 10.316 3.44011 4.87049 30.98 1486.16 1023.784 5.25 5.23 10.324 3.44034 4.86969 30.97 1486.19 1023.781 5.55 5.53 10.326 3.44104 4.87048 30.98 1486.21 1023.786 5.85 5.83 10.324 3.44121 4.87087 30.98 1486.21 1023.790 6.15 6.13 10.331 3.44281 4.87227 30.99 1486.25 1023.798 6.45 6.43 10.324 3.44325 4.87376 31.00 1486.25 1023.808 6.75 6.73 10.321 3.44456 4.87608 31.02 1486.26 1023.822 7.05 7.03 10.322 3.44463 4.87611 31.02 1486.27 1023.824 7.35 7.32 10.323 3.44521 4.87676 31.02 1486.28 1023.829 7.65 7.62 10.322 3.44460 4.87595 31.02 1486.28 1023.825 7.95 7.92 10.324 3.44447 4.87558 31.01 1486.28 1023.825 8.25 8.22 10.324 3.44519 4.87654 31.02 1486.30 1023.831 8.55 8.52 10.322 3.44471 4.87613 31.02 1486.29 1023.830 8.85 8.82 10.320 3.44474 4.87646 31.02 1486.29 1023.833 9.15 9.12 10.318 3.44446 4.87628 31.02 1486.29 1023.834 9.45 9.41 10.316 3.44520 4.87775 31.03 1486.30 1023.843 9.75 9.71 10.313 3.44575 4.87883 31.03 1486.30 1023.851 10.05 10.01 10.313 3.44621 4.87955 31.04 1486.31 1023.856 10.35 10.31 10.308 3.44684 4.88110 31.05 1486.31 1023.866 10.65 10.61 10.303 3.44777 4.88305 31.06 1486.32 1023.879 10.95 10.91 10.297 3.44924 4.88600 31.08 1486.32 1023.896 11.25 11.21 10.291 3.44914 4.88668 31.09 1486.31 1023.902 11.55 11.51 10.286 3.44907 4.88731 31.09 1486.30 1023.907 11.85 11.80 10.283 3.45057 4.88987 31.11 1486.32 1023.922 12.15 12.10 10.282 3.45074 4.89019 31.11 1486.32 1023.926 12.47 12.42 10.280 3.44976 4.88905 31.10 1486.31 1023.921