*2026/01/16 09:47:02.06 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/09/28 18:01:56.000 END TIME : UTC 2023/09/28 18:02:03.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 39 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 11.69 2 Depth metres 0.15 11.68 3 Temperature 'deg C (ITS90)' 14.901 15.032 4 Conductivity S/m 1.55747 3.72747 5 Conductance:Specific S/m 1.95166 4.65787 6 Salinity PSS-78 11.52 29.9 7 Speed:Sound m/s 1479.13 1500.99 8 Density kg/m^3 1007.964 1022.089 $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 : 21 LATITUDE : 49 7.87180 N ! (deg min) LONGITUDE : 125 42.63420 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230928_180156 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 39 39 MERGEHDR 1.3 2026/01/15 13:41:46 39 39 HDREDIT2 3.2 2026/01/15 14:00:53 ? ? REMOVECH 8.2 2026/01/15 14:01:17 39 39 CALIB 12.1 2026/01/16 09:46:00 39 39 CLEAN 5.3 2026/01/16 09:47:02 39 39 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:53 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 14:01:17 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:00 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 14.901 1.55747 1.95166 11.52 1479.13 1007.964 0.45 0.45 14.923 1.67845 2.10208 12.49 1480.33 1008.703 0.75 0.76 14.927 2.19372 2.74717 16.71 1485.24 1011.943 1.05 1.06 14.908 2.87446 3.60133 22.49 1491.87 1016.377 1.35 1.36 14.911 3.07479 3.85204 24.22 1493.89 1017.706 1.65 1.66 14.945 3.28985 4.11800 26.08 1496.16 1019.126 1.95 1.96 14.958 3.42464 4.28531 27.25 1497.57 1020.028 2.25 2.26 14.969 3.46658 4.33654 27.62 1498.03 1020.305 2.55 2.56 14.989 3.51292 4.39237 28.01 1498.56 1020.606 2.85 2.86 14.992 3.54156 4.42779 28.26 1498.86 1020.800 3.15 3.16 15.001 3.56076 4.45087 28.43 1499.09 1020.925 3.45 3.46 15.013 3.58522 4.48004 28.63 1499.37 1021.084 3.75 3.76 15.023 3.59330 4.48906 28.70 1499.48 1021.133 4.05 4.06 15.028 3.60079 4.49784 28.76 1499.58 1021.181 4.35 4.36 15.023 3.61270 4.51328 28.87 1499.69 1021.267 4.65 4.66 15.019 3.61979 4.52254 28.94 1499.76 1021.320 4.95 4.96 15.021 3.63133 4.53676 29.04 1499.89 1021.398 5.25 5.26 15.025 3.63790 4.54456 29.09 1499.97 1021.442 5.55 5.55 15.024 3.64356 4.55170 29.14 1500.03 1021.482 5.85 5.85 15.023 3.64646 4.55546 29.17 1500.06 1021.504 6.15 6.15 15.022 3.65371 4.56458 29.23 1500.14 1021.555 6.45 6.45 15.022 3.65887 4.57111 29.28 1500.20 1021.592 6.75 6.75 15.021 3.66485 4.57868 29.33 1500.26 1021.635 7.05 7.05 15.023 3.67155 4.58675 29.39 1500.34 1021.680 7.35 7.35 15.024 3.67722 4.59375 29.44 1500.41 1021.719 7.65 7.65 15.025 3.68984 4.60940 29.55 1500.55 1021.806 7.95 7.95 15.029 3.69768 4.61870 29.62 1500.64 1021.858 8.25 8.25 15.029 3.70644 4.62975 29.70 1500.74 1021.920 8.55 8.55 15.024 3.71014 4.63490 29.73 1500.77 1021.950 8.85 8.85 15.029 3.71625 4.64198 29.78 1500.85 1021.989 9.15 9.15 15.030 3.72075 4.64743 29.82 1500.90 1022.020 9.45 9.45 15.032 3.72408 4.65139 29.85 1500.94 1022.043 9.75 9.74 15.032 3.72482 4.65228 29.86 1500.96 1022.049 10.05 10.04 15.029 3.72518 4.65307 29.86 1500.96 1022.055 10.35 10.34 15.028 3.72594 4.65418 29.87 1500.97 1022.063 10.65 10.64 15.026 3.72496 4.65314 29.86 1500.96 1022.058 10.95 10.94 15.025 3.72560 4.65413 29.87 1500.97 1022.065 11.25 11.24 15.013 3.72747 4.65787 29.90 1500.96 1022.089 11.69 11.68 15.024 3.72704 4.65601 29.88 1500.99 1022.079