*2026/01/16 09:57:50.88 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/05/22 21:35:08.000 END TIME : UTC 2024/05/22 21:35:17.600 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 14.53 2 Depth metres 0.15 14.55 3 Temperature 'deg C (ITS90)' 10.152 17.869 4 Conductivity S/m 0.1477 3.50791 5 Conductance:Specific S/m 0.17227 4.98682 6 Salinity PSS-78 0.87 31.78 7 Speed:Sound m/s 1473.69 1492.44 8 Density kg/m^3 999.29 1024.475 $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 : 131 LATITUDE : 49 13.78120 N ! (deg min) LONGITUDE : 124 49.49670 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240522_213508 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 09:00:00 49 49 MERGEHDR 1.3 2026/01/16 09:53:53 49 49 HDREDIT2 3.2 2026/01/16 09:55:06 ? ? REMOVECH 8.2 2026/01/16 09:56:17 49 49 CALIB 12.1 2026/01/16 09:56:50 49 49 CLEAN 5.3 2026/01/16 09:57:50 49 49 $END $REMARKS -HEADER EDITS: 2026/01/16 09:55:06 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 09:56:17 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:56:50 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 17.869 0.14770 0.17227 0.87 1476.65 999.290 0.45 0.46 16.806 0.21485 0.25695 1.32 1473.69 999.830 0.75 0.76 16.353 0.44246 0.53499 2.87 1474.00 1001.099 1.05 1.07 16.328 0.60722 0.73463 4.03 1475.27 1001.990 1.35 1.37 16.292 0.94784 1.14774 6.50 1478.02 1003.888 1.65 1.68 16.250 1.04369 1.26508 7.22 1478.71 1004.446 1.95 1.98 16.212 1.17316 1.42331 8.20 1479.72 1005.202 2.25 2.29 16.169 1.24666 1.51408 8.77 1480.23 1005.643 2.55 2.59 16.117 1.28774 1.56594 9.09 1480.44 1005.902 2.85 2.90 15.953 1.40292 1.71286 10.01 1480.96 1006.639 3.15 3.20 15.791 1.52985 1.87524 11.04 1481.62 1007.458 3.45 3.50 15.611 1.70766 2.10245 12.50 1482.70 1008.605 3.75 3.81 15.257 2.06944 2.57027 15.55 1485.05 1011.004 4.05 4.11 14.995 2.66091 3.32660 20.61 1490.03 1014.934 4.35 4.41 14.258 3.09224 3.93840 24.79 1492.44 1018.281 4.65 4.71 13.641 3.18850 4.12583 26.05 1491.87 1019.376 4.95 5.01 13.180 3.30782 4.33192 27.46 1491.97 1020.552 5.25 5.31 12.818 3.37680 4.46451 28.37 1491.81 1021.318 5.55 5.61 12.496 3.42425 4.56618 29.06 1491.53 1021.912 5.85 5.91 11.791 3.49748 4.75314 30.31 1490.60 1023.014 6.15 6.21 11.362 3.50398 4.81822 30.73 1489.60 1023.415 6.45 6.50 11.082 3.50344 4.85489 30.96 1488.89 1023.644 6.75 6.80 10.857 3.50389 4.88596 31.15 1488.34 1023.835 7.05 7.10 10.693 3.50265 4.90667 31.28 1487.91 1023.964 7.35 7.40 10.645 3.50245 4.91298 31.32 1487.79 1024.004 7.65 7.70 10.563 3.50396 4.92642 31.40 1487.61 1024.085 7.95 8.00 10.519 3.50391 4.93250 31.44 1487.50 1024.123 8.25 8.30 10.457 3.50538 4.94319 31.51 1487.36 1024.188 8.55 8.59 10.422 3.50585 4.94874 31.54 1487.29 1024.223 8.85 8.89 10.390 3.50626 4.95371 31.57 1487.22 1024.254 9.15 9.19 10.370 3.50583 4.95598 31.59 1487.16 1024.269 9.45 9.49 10.353 3.50559 4.95792 31.60 1487.12 1024.282 9.75 9.79 10.336 3.50607 4.96106 31.62 1487.09 1024.302 10.05 10.09 10.316 3.50479 4.96200 31.62 1487.03 1024.310 10.35 10.39 10.289 3.50434 4.96517 31.64 1486.96 1024.330 10.65 10.68 10.270 3.50533 4.96929 31.67 1486.93 1024.356 10.95 10.98 10.254 3.50513 4.97129 31.68 1486.89 1024.369 11.25 11.28 10.233 3.50553 4.97472 31.70 1486.85 1024.391 11.55 11.58 10.219 3.50652 4.97822 31.72 1486.83 1024.412 11.85 11.88 10.209 3.50569 4.97843 31.72 1486.80 1024.416 12.15 12.18 10.203 3.50595 4.97964 31.73 1486.79 1024.424 12.45 12.48 10.191 3.50615 4.98157 31.74 1486.77 1024.437 12.75 12.77 10.190 3.50791 4.98419 31.76 1486.79 1024.452 13.05 13.07 10.184 3.50658 4.98318 31.75 1486.76 1024.448 13.35 13.37 10.192 3.50612 4.98148 31.74 1486.78 1024.440 13.65 13.67 10.182 3.50510 4.98135 31.74 1486.75 1024.441 13.95 13.97 10.165 3.50577 4.98481 31.76 1486.72 1024.463 14.25 14.27 10.157 3.50647 4.98682 31.78 1486.71 1024.475 14.53 14.55 10.152 3.50458 4.98488 31.76 1486.68 1024.466