*2026/01/16 09:57:48.59 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/04/23 17:15:52.000 END TIME : UTC 2024/04/23 17:16:01.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 49 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 14.62 2 Depth metres 0.15 14.57 3 Temperature 'deg C (ITS90)' 10.059 11.512 4 Conductivity S/m 3.3514 3.45624 5 Conductance:Specific S/m 4.60538 4.9289 6 Salinity PSS-78 29.24 31.36 7 Speed:Sound m/s 1485.84 1488.35 8 Density kg/m^3 1022.211 1024.164 $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 : 73 LATITUDE : 48 52.56190 N ! (deg min) LONGITUDE : 125 17.41320 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240423_171552 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 08:59:57 49 49 MERGEHDR 1.3 2026/01/16 09:53:49 49 49 HDREDIT2 3.2 2026/01/16 09:55:03 ? ? REMOVECH 8.2 2026/01/16 09:56:14 49 49 CALIB 12.1 2026/01/16 09:56:47 49 49 CLEAN 5.3 2026/01/16 09:57:48 49 49 $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 11.510 3.37207 4.61807 29.33 1488.35 1022.279 0.45 0.45 11.512 3.36303 4.60538 29.24 1488.26 1022.211 0.75 0.75 11.442 3.36025 4.61046 29.27 1488.05 1022.247 1.05 1.05 11.306 3.35140 4.61545 29.29 1487.60 1022.288 1.35 1.35 11.292 3.35329 4.61982 29.32 1487.59 1022.315 1.65 1.65 11.275 3.35519 4.62467 29.35 1487.57 1022.344 1.95 1.94 11.251 3.35587 4.62865 29.38 1487.53 1022.369 2.25 2.24 11.226 3.35670 4.63301 29.41 1487.47 1022.397 2.55 2.54 11.200 3.35489 4.63378 29.41 1487.39 1022.405 2.85 2.84 11.169 3.35524 4.63829 29.44 1487.32 1022.433 3.15 3.14 11.149 3.35433 4.63961 29.45 1487.26 1022.444 3.45 3.44 11.148 3.36686 4.65708 29.57 1487.41 1022.540 3.75 3.74 11.162 3.37869 4.67155 29.67 1487.59 1022.619 4.05 4.04 11.182 3.38207 4.67374 29.69 1487.69 1022.631 4.35 4.34 11.185 3.38659 4.67949 29.73 1487.75 1022.663 4.65 4.64 11.138 3.39230 4.69358 29.82 1487.70 1022.746 4.95 4.94 11.096 3.39150 4.69783 29.85 1487.59 1022.774 5.25 5.23 11.070 3.38986 4.69901 29.85 1487.51 1022.784 5.55 5.53 11.021 3.38932 4.70464 29.89 1487.38 1022.821 5.85 5.83 10.972 3.39585 4.72019 29.99 1487.34 1022.911 6.15 6.13 10.927 3.40163 4.73413 30.09 1487.29 1022.993 6.45 6.43 10.886 3.40452 4.74351 30.15 1487.23 1023.049 6.75 6.73 10.850 3.40547 4.74965 30.19 1487.15 1023.087 7.05 7.03 10.817 3.40797 4.75752 30.24 1487.10 1023.134 7.35 7.33 10.784 3.40930 4.76373 30.28 1487.04 1023.172 7.65 7.63 10.710 3.40840 4.77229 30.33 1486.84 1023.227 7.95 7.92 10.617 3.41538 4.79454 30.48 1486.69 1023.357 8.25 8.22 10.543 3.42598 4.81952 30.64 1486.63 1023.501 8.55 8.52 10.453 3.43712 4.84749 30.83 1486.54 1023.663 8.85 8.82 10.382 3.44074 4.86229 30.93 1486.40 1023.751 9.15 9.12 10.317 3.44446 4.87655 31.02 1486.28 1023.836 9.45 9.42 10.288 3.44703 4.88408 31.07 1486.25 1023.880 9.75 9.72 10.270 3.44760 4.88743 31.09 1486.21 1023.901 10.05 10.02 10.258 3.44803 4.88970 31.10 1486.19 1023.916 10.35 10.31 10.242 3.44872 4.89286 31.13 1486.17 1023.935 10.65 10.61 10.216 3.44971 4.89793 31.16 1486.11 1023.966 10.95 10.91 10.194 3.45083 4.90264 31.19 1486.07 1023.995 11.25 11.21 10.174 3.45046 4.90491 31.20 1486.02 1024.010 11.55 11.51 10.162 3.45109 4.90745 31.22 1486.01 1024.026 11.85 11.81 10.146 3.45124 4.90987 31.23 1485.97 1024.042 12.15 12.11 10.135 3.45141 4.91166 31.24 1485.95 1024.054 12.45 12.40 10.127 3.45203 4.91365 31.26 1485.94 1024.067 12.75 12.70 10.111 3.45258 4.91661 31.28 1485.91 1024.085 13.05 13.00 10.105 3.45402 4.91962 31.30 1485.92 1024.104 13.35 13.30 10.104 3.45392 4.91957 31.30 1485.92 1024.105 13.65 13.60 10.083 3.45455 4.92335 31.32 1485.88 1024.128 13.95 13.90 10.065 3.45584 4.92782 31.35 1485.85 1024.155 14.25 14.20 10.059 3.45525 4.92777 31.35 1485.84 1024.156 14.62 14.57 10.061 3.45624 4.92890 31.36 1485.86 1024.164