*2026/01/16 10:37:54.12 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/09 14:39:17.000 END TIME : UTC 2025/05/09 14:39:30.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 66 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 19.63 2 Depth metres 0.15 19.55 3 Temperature 'deg C (ITS90)' 9.224 12.032 4 Conductivity S/m 3.36776 3.45147 5 Conductance:Specific S/m 4.54909 4.99403 6 Salinity PSS-78 28.89 31.7 7 Speed:Sound m/s 1483.26 1489.79 8 Density kg/m^3 1021.852 1024.591 $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 : 2025-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 147 LATITUDE : 48 49.11250 N ! (deg min) LONGITUDE : 125 10.70160 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250509_143917 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:30 66 66 MERGEHDR 1.3 2026/01/16 10:35:44 66 66 HDREDIT2 3.2 2026/01/16 10:36:15 ? ? REMOVECH 8.2 2026/01/16 10:36:41 66 66 CALIB 12.1 2026/01/16 10:37:17 66 66 CLEAN 5.3 2026/01/16 10:37:54 66 66 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:15 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 10:36:41 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:17 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 10:37:42 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 12.032 3.38091 4.56482 29.01 1489.79 1021.934 0.45 0.45 12.016 3.36776 4.54909 28.89 1489.60 1021.852 0.75 0.75 11.979 3.38315 4.57441 29.07 1489.69 1021.995 1.05 1.05 11.858 3.41916 4.63827 29.51 1489.79 1022.358 1.35 1.35 11.776 3.43611 4.67166 29.73 1489.78 1022.550 1.65 1.65 11.699 3.43574 4.68101 29.79 1489.59 1022.611 1.95 1.94 11.698 3.43486 4.67989 29.79 1489.58 1022.606 2.25 2.24 11.642 3.43471 4.68682 29.83 1489.44 1022.651 2.55 2.54 11.558 3.43466 4.69753 29.90 1489.23 1022.719 2.85 2.84 11.480 3.43322 4.70564 29.94 1489.02 1022.772 3.15 3.14 11.411 3.43343 4.71481 30.00 1488.86 1022.831 3.45 3.44 11.334 3.43419 4.72586 30.07 1488.67 1022.900 3.75 3.74 11.279 3.43481 4.73392 30.12 1488.54 1022.950 4.05 4.04 11.223 3.43538 4.74193 30.17 1488.42 1023.000 4.35 4.34 11.169 3.43802 4.75267 30.24 1488.31 1023.066 4.65 4.64 11.115 3.44415 4.76837 30.35 1488.25 1023.158 4.95 4.93 11.067 3.44427 4.77481 30.39 1488.14 1023.199 5.25 5.23 11.021 3.44502 4.78194 30.43 1488.03 1023.243 5.55 5.53 10.986 3.44541 4.78718 30.47 1487.95 1023.276 5.85 5.83 10.951 3.44550 4.79200 30.50 1487.87 1023.307 6.15 6.13 10.906 3.44578 4.79827 30.54 1487.76 1023.346 6.45 6.43 10.840 3.44608 4.80754 30.59 1487.60 1023.404 6.75 6.73 10.780 3.44623 4.81592 30.65 1487.45 1023.456 7.05 7.03 10.708 3.44689 4.82645 30.71 1487.28 1023.521 7.35 7.33 10.622 3.44807 4.83988 30.80 1487.08 1023.603 7.65 7.62 10.524 3.45147 4.85792 30.91 1486.88 1023.711 7.95 7.92 10.382 3.44507 4.86846 30.97 1486.44 1023.781 8.25 8.22 10.303 3.43885 4.87043 30.98 1486.17 1023.799 8.55 8.52 10.250 3.42906 4.86394 30.92 1485.92 1023.768 8.85 8.82 10.064 3.42251 4.88037 31.02 1485.36 1023.873 9.15 9.12 9.893 3.41958 4.90010 31.13 1484.89 1023.994 9.45 9.42 9.792 3.41532 4.90818 31.18 1484.58 1024.045 9.75 9.71 9.724 3.41239 4.91365 31.21 1484.37 1024.081 10.05 10.01 9.656 3.41285 4.92385 31.27 1484.21 1024.142 10.35 10.31 9.607 3.41273 4.93074 31.31 1484.08 1024.184 10.65 10.61 9.576 3.41279 4.93520 31.34 1484.01 1024.212 10.95 10.91 9.557 3.41254 4.93748 31.35 1483.96 1024.226 11.25 11.21 9.547 3.41274 4.93922 31.36 1483.94 1024.238 11.55 11.51 9.540 3.41233 4.93968 31.36 1483.92 1024.242 11.85 11.80 9.535 3.41266 4.94087 31.37 1483.92 1024.250 12.15 12.10 9.528 3.41255 4.94167 31.38 1483.90 1024.256 12.45 12.40 9.513 3.41241 4.94363 31.39 1483.87 1024.269 12.75 12.70 9.486 3.41269 4.94797 31.42 1483.80 1024.296 13.05 13.00 9.460 3.41269 4.95165 31.44 1483.74 1024.318 13.35 13.30 9.432 3.41258 4.95558 31.46 1483.67 1024.343 13.65 13.60 9.401 3.41261 4.96010 31.49 1483.59 1024.371 13.95 13.89 9.370 3.41303 4.96511 31.52 1483.53 1024.401 14.25 14.19 9.340 3.41318 4.96964 31.55 1483.45 1024.429 14.55 14.49 9.312 3.41325 4.97384 31.57 1483.39 1024.454 14.85 14.79 9.288 3.41386 4.97819 31.60 1483.34 1024.481 15.15 15.09 9.271 3.41589 4.98368 31.64 1483.32 1024.513 15.45 15.39 9.260 3.41606 4.98550 31.65 1483.30 1024.525 15.75 15.69 9.251 3.41679 4.98789 31.66 1483.29 1024.540 16.05 15.98 9.242 3.41726 4.98982 31.68 1483.28 1024.552 16.35 16.28 9.235 3.41815 4.99214 31.69 1483.28 1024.567 16.65 16.58 9.230 3.41770 4.99224 31.69 1483.26 1024.569 16.95 16.88 9.227 3.41810 4.99325 31.70 1483.26 1024.576 17.25 17.18 9.224 3.41830 4.99399 31.70 1483.26 1024.581 17.55 17.48 9.225 3.41829 4.99386 31.70 1483.27 1024.582 17.85 17.78 9.226 3.41830 4.99372 31.70 1483.28 1024.582 18.15 18.07 9.226 3.41825 4.99361 31.70 1483.28 1024.583 18.45 18.37 9.226 3.41777 4.99291 31.69 1483.28 1024.580 18.75 18.67 9.226 3.41802 4.99337 31.70 1483.29 1024.584 19.05 18.97 9.225 3.41834 4.99386 31.70 1483.30 1024.588 19.35 19.27 9.224 3.41805 4.99364 31.70 1483.29 1024.588 19.63 19.55 9.225 3.41837 4.99403 31.70 1483.30 1024.591