*2026/01/16 09:47:05.75 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/12/20 17:31:18.000 END TIME : UTC 2023/12/20 17:31:26.000 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 12.15 2 Depth metres 0.15 12.13 3 Temperature 'deg C (ITS90)' 7.92 11.035 4 Conductivity S/m 1.13829 3.48585 5 Conductance:Specific S/m 1.72887 4.8367 6 Salinity PSS-78 9.9 30.82 7 Speed:Sound m/s 1451.18 1488.66 8 Density kg/m^3 1007.634 1023.572 $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 : 109 LATITUDE : 50 35.69710 N ! (deg min) LONGITUDE : 127 45.38230 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231220_173118 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:53 41 41 MERGEHDR 1.3 2026/01/15 13:41:49 41 41 HDREDIT2 3.2 2026/01/15 14:00:58 ? ? REMOVECH 8.2 2026/01/15 14:01:18 41 41 CALIB 12.1 2026/01/16 09:46:11 41 41 CLEAN 5.3 2026/01/16 09:47:05 41 41 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:58 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 09:46:11 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 7.920 1.13829 1.72887 9.90 1451.18 1007.634 0.45 0.46 8.022 1.29636 1.96290 11.36 1453.41 1008.769 0.75 0.76 8.386 1.72390 2.58173 15.32 1459.74 1011.826 1.05 1.06 8.582 2.04943 3.05138 18.40 1464.28 1014.205 1.35 1.36 9.242 2.61586 3.81961 23.59 1473.17 1018.173 1.65 1.66 9.431 2.95977 4.29817 26.88 1477.89 1020.716 1.95 1.96 9.708 2.98253 4.29661 26.90 1478.95 1020.691 2.25 2.26 9.766 3.03112 4.35929 27.34 1479.70 1021.027 2.55 2.56 9.873 3.06009 4.38746 27.55 1480.36 1021.173 2.85 2.86 10.017 3.09917 4.42529 27.83 1481.22 1021.369 3.15 3.16 10.211 3.19367 4.53507 28.61 1482.89 1021.951 3.45 3.46 10.374 3.25887 4.60626 29.13 1484.11 1022.328 3.75 3.76 10.435 3.27353 4.61912 29.23 1484.45 1022.394 4.05 4.05 10.462 3.28629 4.63359 29.33 1484.68 1022.473 4.35 4.35 10.493 3.29530 4.64219 29.39 1484.87 1022.518 4.65 4.65 10.535 3.30610 4.65190 29.47 1485.12 1022.569 4.95 4.95 10.584 3.32527 4.67237 29.61 1485.48 1022.678 5.25 5.25 10.641 3.34432 4.69174 29.76 1485.86 1022.781 5.55 5.55 10.708 3.38087 4.73402 30.06 1486.47 1023.008 5.85 5.85 10.743 3.39208 4.74511 30.14 1486.70 1023.067 6.15 6.15 10.761 3.39797 4.75093 30.19 1486.82 1023.099 6.45 6.45 10.771 3.40382 4.75778 30.24 1486.92 1023.137 6.75 6.75 10.781 3.40991 4.76492 30.29 1487.03 1023.177 7.05 7.04 10.796 3.41644 4.77205 30.34 1487.15 1023.216 7.35 7.34 10.813 3.42027 4.77514 30.36 1487.24 1023.232 7.65 7.64 10.825 3.42192 4.77586 30.37 1487.30 1023.237 7.95 7.94 10.839 3.42510 4.77849 30.39 1487.37 1023.251 8.25 8.24 10.849 3.42728 4.78014 30.40 1487.43 1023.261 8.55 8.54 10.865 3.43020 4.78214 30.42 1487.51 1023.272 8.85 8.84 10.880 3.44279 4.79759 30.53 1487.70 1023.356 9.15 9.14 10.887 3.44779 4.80364 30.57 1487.79 1023.390 9.45 9.43 10.897 3.44869 4.80365 30.57 1487.82 1023.391 9.75 9.73 10.902 3.45128 4.80650 30.59 1487.87 1023.407 10.05 10.03 10.913 3.45501 4.81027 30.62 1487.95 1023.428 10.35 10.33 10.927 3.45866 4.81344 30.64 1488.04 1023.446 10.65 10.63 10.937 3.46099 4.81531 30.66 1488.09 1023.456 10.95 10.93 10.937 3.46396 4.81951 30.69 1488.13 1023.481 11.25 11.23 10.968 3.46991 4.82360 30.72 1488.29 1023.502 11.55 11.53 11.012 3.47575 4.82578 30.74 1488.47 1023.511 11.85 11.82 11.005 3.47900 4.83122 30.78 1488.50 1023.543 12.15 12.13 11.035 3.48585 4.83670 30.82 1488.66 1023.572