*2026/01/16 09:57:48.52 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/04/23 15:13:19.000 END TIME : UTC 2024/04/23 15:13:30.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 60 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 17.99 2 Depth metres 0.15 17.91 3 Temperature 'deg C (ITS90)' 9.923 11.053 4 Conductivity S/m 3.40564 3.49073 5 Conductance:Specific S/m 4.72416 4.99781 6 Salinity PSS-78 30.03 31.82 7 Speed:Sound m/s 1485.8 1488.22 8 Density kg/m^3 1022.903 1024.563 $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 : 2024-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 71 LATITUDE : 48 49.01460 N ! (deg min) LONGITUDE : 125 10.79810 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240423_151319 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 08:59:57 60 60 MERGEHDR 1.3 2026/01/16 09:53:48 60 60 HDREDIT2 3.2 2026/01/16 09:55:03 ? ? REMOVECH 8.2 2026/01/16 09:56:14 60 60 CALIB 12.1 2026/01/16 09:56:47 60 60 CLEAN 5.3 2026/01/16 09:57:48 60 60 $END $REMARKS -HEADER EDITS: 2026/01/16 09:55:03 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 09:56:14 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:56:47 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 09:57:46 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 11.045 3.40564 4.72416 30.03 1487.55 1022.903 0.45 0.45 11.027 3.40737 4.72894 30.06 1487.53 1022.932 0.75 0.75 11.015 3.41324 4.73868 30.13 1487.57 1022.987 1.05 1.05 10.976 3.41712 4.74910 30.20 1487.52 1023.049 1.35 1.35 10.959 3.42300 4.75958 30.27 1487.55 1023.109 1.65 1.64 10.962 3.42632 4.76379 30.30 1487.60 1023.133 1.95 1.94 10.957 3.42918 4.76840 30.33 1487.63 1023.160 2.25 2.24 10.979 3.43476 4.77332 30.37 1487.76 1023.187 2.55 2.54 11.001 3.43915 4.77643 30.39 1487.87 1023.203 2.85 2.84 11.018 3.44217 4.77841 30.41 1487.95 1023.214 3.15 3.14 11.032 3.44299 4.77774 30.41 1488.00 1023.210 3.45 3.44 11.046 3.44867 4.78369 30.45 1488.11 1023.243 3.75 3.74 11.053 3.45011 4.78471 30.46 1488.15 1023.249 4.05 4.04 11.048 3.45272 4.78901 30.49 1488.17 1023.275 4.35 4.33 11.052 3.45549 4.79233 30.51 1488.22 1023.294 4.65 4.63 11.040 3.45678 4.79571 30.53 1488.21 1023.315 4.95 4.93 10.974 3.45834 4.80671 30.60 1488.06 1023.382 5.25 5.23 10.922 3.46003 4.81610 30.66 1487.96 1023.439 5.55 5.53 10.880 3.46230 4.82489 30.72 1487.88 1023.492 5.85 5.83 10.789 3.46201 4.83676 30.80 1487.65 1023.566 6.15 6.13 10.652 3.46428 4.85846 30.93 1487.33 1023.698 6.45 6.43 10.559 3.46546 4.87284 31.02 1487.12 1023.786 6.75 6.72 10.510 3.46598 4.88034 31.07 1487.00 1023.832 7.05 7.02 10.403 3.46580 4.89476 31.16 1486.73 1023.920 7.35 7.32 10.322 3.46658 4.90713 31.24 1486.54 1023.996 7.65 7.62 10.286 3.46604 4.91133 31.26 1486.44 1024.023 7.95 7.92 10.213 3.46624 4.92179 31.33 1486.26 1024.087 8.25 8.22 10.144 3.46670 4.93210 31.39 1486.10 1024.149 8.55 8.52 10.114 3.46637 4.93592 31.41 1486.02 1024.174 8.85 8.82 10.097 3.46638 4.93834 31.43 1485.98 1024.189 9.15 9.11 10.084 3.46665 4.94048 31.44 1485.96 1024.203 9.45 9.41 10.075 3.46660 4.94166 31.45 1485.94 1024.212 9.75 9.71 10.071 3.46662 4.94233 31.45 1485.93 1024.217 10.05 10.01 10.062 3.46609 4.94284 31.46 1485.91 1024.222 10.35 10.31 10.058 3.46660 4.94406 31.46 1485.91 1024.230 10.65 10.61 10.048 3.46644 4.94527 31.47 1485.89 1024.238 10.95 10.91 10.022 3.46652 4.94910 31.49 1485.83 1024.262 11.25 11.20 10.019 3.46674 4.94976 31.50 1485.83 1024.268 11.55 11.50 9.997 3.46857 4.95548 31.54 1485.80 1024.302 11.85 11.80 9.994 3.46995 4.95787 31.55 1485.81 1024.316 12.15 12.10 9.991 3.47053 4.95913 31.56 1485.82 1024.325 12.45 12.40 9.991 3.47053 4.95914 31.56 1485.82 1024.326 12.75 12.70 9.992 3.47197 4.96115 31.57 1485.84 1024.338 13.05 13.00 9.974 3.47535 4.96851 31.62 1485.84 1024.381 13.35 13.29 9.961 3.47990 4.97680 31.68 1485.87 1024.429 13.65 13.59 9.954 3.48176 4.98052 31.71 1485.88 1024.451 13.95 13.89 9.943 3.48411 4.98549 31.74 1485.89 1024.481 14.25 14.19 9.937 3.48647 4.98968 31.77 1485.91 1024.505 14.55 14.49 9.931 3.48782 4.99249 31.79 1485.91 1024.523 14.85 14.79 9.927 3.48888 4.99458 31.80 1485.92 1024.536 15.15 15.08 9.926 3.48935 4.99535 31.81 1485.93 1024.541 15.45 15.38 9.925 3.48996 4.99639 31.81 1485.94 1024.548 15.75 15.68 9.924 3.49013 4.99671 31.82 1485.94 1024.551 16.05 15.98 9.924 3.49031 4.99706 31.82 1485.95 1024.555 16.35 16.28 9.923 3.49073 4.99781 31.82 1485.95 1024.560 16.65 16.58 9.924 3.49057 4.99733 31.82 1485.96 1024.559 16.95 16.88 9.925 3.49049 4.99716 31.82 1485.97 1024.559 17.25 17.17 9.927 3.49057 4.99699 31.82 1485.98 1024.559 17.55 17.47 9.925 3.49060 4.99732 31.82 1485.98 1024.562 17.99 17.91 9.926 3.49064 4.99719 31.82 1485.99 1024.563