*2026/01/16 09:47:02.21 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/09/28 21:25:38.000 END TIME : UTC 2023/09/28 21:25:45.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 40 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 11.87 2 Depth metres 0.15 11.85 3 Temperature 'deg C (ITS90)' 14.304 14.638 4 Conductivity S/m 2.85294 3.69234 5 Conductance:Specific S/m 3.59954 4.6868 6 Salinity PSS-78 22.47 30.06 7 Speed:Sound m/s 1490.91 1499.16 8 Density kg/m^3 1016.407 1022.346 $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 : 27 LATITUDE : 49 15.26680 N ! (deg min) LONGITUDE : 125 51.22950 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230928_212538 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 40 40 MERGEHDR 1.3 2026/01/15 13:41:46 40 40 HDREDIT2 3.2 2026/01/15 14:00:53 ? ? REMOVECH 8.2 2026/01/15 14:01:17 40 40 CALIB 12.1 2026/01/16 09:46:01 40 40 CLEAN 5.3 2026/01/16 09:47:02 40 40 $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 09:46:01 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 14.629 2.85294 3.59954 22.47 1490.91 1016.407 0.45 0.45 14.638 2.85754 3.60458 22.50 1490.98 1016.434 0.75 0.75 14.627 2.90167 3.66123 22.89 1491.40 1016.736 1.05 1.05 14.613 2.91451 3.67875 23.01 1491.50 1016.832 1.35 1.35 14.525 3.02421 3.82565 24.02 1492.39 1017.626 1.65 1.65 14.475 3.25266 4.11992 26.07 1494.61 1019.210 1.95 1.95 14.505 3.35655 4.24825 26.97 1495.76 1019.898 2.25 2.25 14.527 3.43362 4.34338 27.64 1496.62 1020.411 2.55 2.55 14.473 3.50821 4.44381 28.34 1497.27 1020.967 2.85 2.85 14.435 3.57070 4.52730 28.93 1497.83 1021.429 3.15 3.15 14.412 3.60641 4.57522 29.27 1498.16 1021.695 3.45 3.45 14.407 3.63026 4.60614 29.49 1498.40 1021.867 3.75 3.75 14.402 3.63529 4.61310 29.54 1498.45 1021.907 4.05 4.05 14.398 3.63930 4.61859 29.58 1498.49 1021.939 4.35 4.35 14.393 3.64509 4.62662 29.63 1498.54 1021.985 4.65 4.65 14.394 3.65203 4.63524 29.69 1498.62 1022.033 4.95 4.95 14.400 3.66570 4.65194 29.81 1498.78 1022.125 5.25 5.25 14.373 3.66909 4.65940 29.86 1498.76 1022.171 5.55 5.55 14.348 3.66969 4.66317 29.89 1498.71 1022.197 5.85 5.84 14.344 3.66888 4.66258 29.89 1498.70 1022.195 6.15 6.14 14.345 3.66891 4.66244 29.88 1498.71 1022.196 6.45 6.44 14.334 3.67262 4.66852 29.93 1498.72 1022.232 6.75 6.74 14.327 3.67562 4.67311 29.96 1498.75 1022.259 7.05 7.04 14.319 3.67607 4.67472 29.97 1498.73 1022.271 7.35 7.34 14.312 3.67816 4.67821 29.99 1498.74 1022.292 7.65 7.64 14.313 3.67858 4.67857 30.00 1498.76 1022.295 7.95 7.94 14.312 3.67964 4.67999 30.01 1498.77 1022.304 8.25 8.24 14.304 3.68041 4.68194 30.02 1498.77 1022.318 8.55 8.54 14.314 3.67817 4.67790 29.99 1498.77 1022.295 8.85 8.84 14.335 3.68108 4.67915 30.00 1498.85 1022.300 9.15 9.14 14.339 3.68361 4.68184 30.02 1498.90 1022.316 9.45 9.43 14.348 3.68340 4.68056 30.01 1498.92 1022.309 9.75 9.73 14.352 3.68585 4.68314 30.03 1498.96 1022.323 10.05 10.03 14.355 3.68716 4.68443 30.04 1498.99 1022.331 10.35 10.33 14.359 3.68770 4.68467 30.04 1499.01 1022.333 10.65 10.63 14.371 3.68854 4.68428 30.04 1499.05 1022.331 10.95 10.93 14.382 3.69095 4.68604 30.05 1499.10 1022.340 11.25 11.23 14.381 3.69140 4.68675 30.06 1499.11 1022.345 11.55 11.53 14.388 3.69205 4.68680 30.06 1499.14 1022.346 11.87 11.85 14.393 3.69234 4.68654 30.06 1499.16 1022.345