*2026/01/16 09:47:06.20 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/12/20 23:25:40.000 END TIME : UTC 2023/12/20 23:25:58.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 92 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 27.53 2 Depth metres 0.15 27.43 3 Temperature 'deg C (ITS90)' 10.525 10.797 4 Conductivity S/m 3.28153 3.535 5 Conductance:Specific S/m 4.61851 4.93761 6 Salinity PSS-78 29.23 31.5 7 Speed:Sound m/s 1484.73 1488.89 8 Density kg/m^3 1022.369 1024.212 $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 : 119 LATITUDE : 50 31.52770 N ! (deg min) LONGITUDE : 127 36.52640 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231220_232540 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:53 92 92 MERGEHDR 1.3 2026/01/15 13:41:49 92 92 HDREDIT2 3.2 2026/01/15 14:00:58 ? ? REMOVECH 8.2 2026/01/15 14:01:19 92 92 CALIB 12.1 2026/01/16 09:46:13 92 92 CLEAN 5.3 2026/01/16 09:47:06 92 92 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:58 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 14:01:19 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:13 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 10.526 3.28153 4.61851 29.23 1484.73 1022.369 0.45 0.45 10.532 3.28587 4.62376 29.27 1484.80 1022.398 0.75 0.75 10.532 3.28676 4.62502 29.28 1484.82 1022.406 1.05 1.05 10.532 3.28887 4.62801 29.30 1484.85 1022.424 1.35 1.35 10.530 3.29037 4.63043 29.32 1484.86 1022.438 1.65 1.64 10.527 3.29288 4.63435 29.34 1484.89 1022.461 1.95 1.94 10.526 3.29664 4.63977 29.38 1484.94 1022.492 2.25 2.24 10.525 3.29900 4.64318 29.40 1484.97 1022.512 2.55 2.54 10.526 3.30132 4.64634 29.43 1485.00 1022.531 2.85 2.84 10.525 3.30151 4.64674 29.43 1485.01 1022.534 3.15 3.14 10.530 3.30385 4.64945 29.45 1485.05 1022.550 3.45 3.44 10.532 3.30511 4.65085 29.46 1485.08 1022.559 3.75 3.74 10.529 3.30724 4.65433 29.48 1485.10 1022.579 4.05 4.04 10.528 3.30861 4.65639 29.50 1485.12 1022.592 4.35 4.34 10.533 3.30970 4.65718 29.50 1485.15 1022.597 4.65 4.64 10.536 3.31012 4.65742 29.50 1485.17 1022.599 4.95 4.93 10.534 3.31294 4.66162 29.53 1485.20 1022.624 5.25 5.23 10.537 3.31455 4.66355 29.55 1485.23 1022.635 5.55 5.53 10.539 3.31660 4.66614 29.57 1485.27 1022.651 5.85 5.83 10.539 3.32222 4.67404 29.62 1485.34 1022.695 6.15 6.13 10.540 3.32632 4.67970 29.66 1485.40 1022.727 6.45 6.43 10.542 3.32708 4.68049 29.67 1485.42 1022.732 6.75 6.73 10.545 3.33044 4.68481 29.70 1485.47 1022.757 7.05 7.03 10.548 3.35211 4.71488 29.91 1485.74 1022.923 7.35 7.33 10.551 3.35772 4.72242 29.96 1485.82 1022.965 7.65 7.62 10.546 3.36106 4.72776 30.00 1485.85 1022.996 7.95 7.92 10.541 3.36178 4.72949 30.01 1485.85 1023.007 8.25 8.22 10.543 3.37247 4.74423 30.11 1485.99 1023.089 8.55 8.52 10.559 3.37366 4.74379 30.11 1486.05 1023.086 8.85 8.82 10.564 3.37451 4.74424 30.12 1486.08 1023.090 9.15 9.12 10.567 3.37495 4.74455 30.12 1486.09 1023.092 9.45 9.42 10.567 3.37583 4.74576 30.13 1486.11 1023.100 9.75 9.72 10.568 3.37702 4.74722 30.14 1486.13 1023.109 10.05 10.02 10.568 3.37810 4.74883 30.15 1486.15 1023.120 10.35 10.31 10.568 3.37798 4.74860 30.15 1486.15 1023.120 10.65 10.61 10.569 3.37808 4.74863 30.15 1486.16 1023.121 10.95 10.91 10.567 3.37971 4.75116 30.16 1486.18 1023.136 11.25 11.21 10.568 3.37998 4.75147 30.17 1486.19 1023.139 11.55 11.51 10.568 3.38015 4.75162 30.17 1486.20 1023.141 11.85 11.81 10.568 3.38367 4.75655 30.20 1486.25 1023.169 12.15 12.11 10.570 3.38635 4.76005 30.23 1486.29 1023.190 12.45 12.41 10.571 3.38987 4.76496 30.26 1486.34 1023.218 12.75 12.71 10.571 3.39669 4.77447 30.33 1486.42 1023.271 13.05 13.00 10.570 3.39807 4.77654 30.34 1486.44 1023.284 13.35 13.30 10.571 3.40391 4.78463 30.40 1486.52 1023.329 13.65 13.60 10.575 3.40534 4.78611 30.41 1486.55 1023.338 13.95 13.90 10.576 3.40596 4.78691 30.42 1486.57 1023.344 14.25 14.20 10.578 3.40682 4.78783 30.42 1486.59 1023.350 14.55 14.50 10.578 3.40700 4.78808 30.42 1486.59 1023.353 14.85 14.80 10.578 3.40611 4.78680 30.41 1486.59 1023.347 15.15 15.10 10.577 3.40660 4.78757 30.42 1486.60 1023.353 15.45 15.39 10.578 3.40721 4.78836 30.43 1486.61 1023.358 15.75 15.69 10.579 3.40765 4.78883 30.43 1486.62 1023.362 16.05 15.99 10.578 3.40725 4.78839 30.43 1486.62 1023.361 16.35 16.29 10.578 3.40684 4.78784 30.42 1486.62 1023.359 16.65 16.59 10.579 3.40690 4.78786 30.42 1486.63 1023.360 16.95 16.89 10.580 3.40642 4.78704 30.42 1486.63 1023.357 17.25 17.19 10.580 3.40659 4.78719 30.42 1486.64 1023.359 17.55 17.49 10.580 3.40729 4.78820 30.42 1486.65 1023.366 17.85 17.79 10.580 3.40714 4.78799 30.42 1486.65 1023.366 18.15 18.08 10.581 3.40700 4.78761 30.42 1486.66 1023.365 18.45 18.38 10.581 3.40704 4.78771 30.42 1486.66 1023.367 18.75 18.68 10.581 3.40578 4.78602 30.41 1486.65 1023.359 19.05 18.98 10.581 3.40561 4.78572 30.41 1486.66 1023.359 19.35 19.28 10.582 3.40575 4.78581 30.41 1486.66 1023.360 19.65 19.58 10.580 3.40664 4.78731 30.42 1486.67 1023.370 19.95 19.88 10.579 3.40664 4.78744 30.42 1486.68 1023.372 20.25 20.18 10.578 3.40805 4.78949 30.43 1486.70 1023.385 20.55 20.47 10.579 3.40872 4.79030 30.44 1486.71 1023.390 20.85 20.77 10.581 3.41080 4.79303 30.46 1486.75 1023.406 21.15 21.07 10.586 3.41227 4.79437 30.47 1486.78 1023.415 21.45 21.37 10.594 3.42054 4.80488 30.54 1486.91 1023.473 21.75 21.67 10.602 3.42699 4.81293 30.60 1487.01 1023.518 22.05 21.97 10.618 3.43968 4.82851 30.71 1487.21 1023.603 22.35 22.27 10.652 3.45159 4.84067 30.80 1487.44 1023.669 22.65 22.57 10.670 3.47460 4.87049 31.01 1487.77 1023.832 22.95 22.86 10.673 3.49799 4.90283 31.24 1488.06 1024.011 23.25 23.16 10.698 3.51656 4.92546 31.40 1488.35 1024.135 23.55 23.46 10.720 3.51907 4.92595 31.41 1488.44 1024.137 23.85 23.76 10.724 3.51899 4.92524 31.41 1488.45 1024.134 24.15 24.06 10.724 3.52064 4.92752 31.42 1488.48 1024.148 24.45 24.36 10.735 3.52208 4.92802 31.43 1488.53 1024.151 24.75 24.66 10.735 3.52273 4.92900 31.43 1488.54 1024.158 25.05 24.95 10.736 3.52687 4.93467 31.47 1488.60 1024.191 25.35 25.25 10.757 3.52754 4.93266 31.46 1488.66 1024.179 25.65 25.55 10.761 3.52724 4.93175 31.46 1488.67 1024.175 25.95 25.85 10.757 3.52716 4.93215 31.46 1488.67 1024.179 26.25 26.15 10.755 3.52695 4.93213 31.46 1488.66 1024.180 26.55 26.45 10.763 3.52683 4.93089 31.45 1488.69 1024.174 26.85 26.75 10.774 3.52773 4.93053 31.45 1488.73 1024.172 27.15 27.04 10.772 3.53192 4.93668 31.49 1488.78 1024.207 27.53 27.43 10.797 3.53500 4.93761 31.50 1488.89 1024.212