*2026/01/16 10:37:51.66 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/09 20:36:31.000 END TIME : UTC 2025/04/09 20:36:49.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 93 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 27.89 2 Depth metres 0.15 27.85 3 Temperature 'deg C (ITS90)' 8.716 9.735 4 Conductivity S/m 0.62439 3.17208 5 Conductance:Specific S/m 0.92595 4.61231 6 Salinity PSS-78 5.08 29 7 Speed:Sound m/s 1448.45 1481.55 8 Density kg/m^3 1003.791 1022.546 $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 : 101 LATITUDE : 49 38.98520 N ! (deg min) LONGITUDE : 126 26.22710 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250409_203631 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:28 93 93 MERGEHDR 1.3 2026/01/16 10:35:41 93 93 HDREDIT2 3.2 2026/01/16 10:36:12 ? ? REMOVECH 8.2 2026/01/16 10:36:39 93 93 CALIB 12.1 2026/01/16 10:37:15 93 93 CLEAN 5.3 2026/01/16 10:37:51 93 93 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:12 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 10:36:39 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:15 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 8.716 0.62439 0.92595 5.08 1448.45 1003.791 0.45 0.46 8.863 0.67545 0.99732 5.50 1449.57 1004.111 0.75 0.76 9.141 0.78059 1.14319 6.37 1451.76 1004.769 1.05 1.07 9.274 1.07351 1.56608 8.95 1455.45 1006.764 1.35 1.37 9.598 2.27355 3.28563 20.03 1470.18 1015.351 1.65 1.67 9.593 2.68509 3.88093 24.04 1475.04 1018.476 1.95 1.97 9.572 2.78444 4.02701 25.03 1476.18 1019.256 2.25 2.27 9.579 2.81463 4.06980 25.33 1476.56 1019.485 2.55 2.57 9.605 2.84704 4.11366 25.63 1477.03 1019.719 2.85 2.87 9.629 2.90607 4.19603 26.20 1477.82 1020.160 3.15 3.17 9.642 2.92853 4.22681 26.41 1478.13 1020.326 3.45 3.47 9.650 2.95235 4.26029 26.64 1478.45 1020.506 3.75 3.77 9.648 2.96235 4.27489 26.75 1478.57 1020.586 4.05 4.07 9.640 2.98014 4.30156 26.93 1478.77 1020.732 4.35 4.37 9.641 3.03102 4.37490 27.44 1479.39 1021.128 4.65 4.67 9.634 3.06331 4.42239 27.76 1479.77 1021.386 4.95 4.97 9.657 3.08861 4.45593 28.00 1480.14 1021.568 5.25 5.26 9.674 3.10469 4.47701 28.15 1480.39 1021.682 5.55 5.56 9.652 3.11273 4.49137 28.24 1480.43 1021.762 5.85 5.86 9.613 3.11389 4.49811 28.29 1480.35 1021.803 6.15 6.16 9.591 3.11296 4.49968 28.29 1480.28 1021.814 6.45 6.46 9.636 3.10463 4.48180 28.18 1480.31 1021.715 6.75 6.76 9.662 3.10966 4.48568 28.21 1480.44 1021.736 7.05 7.06 9.663 3.12423 4.50655 28.35 1480.63 1021.850 7.35 7.36 9.661 3.12489 4.50783 28.36 1480.63 1021.859 7.65 7.66 9.660 3.12573 4.50917 28.37 1480.65 1021.867 7.95 7.96 9.657 3.12620 4.51018 28.37 1480.65 1021.874 8.25 8.26 9.655 3.12619 4.51041 28.38 1480.65 1021.877 8.55 8.56 9.655 3.12618 4.51043 28.38 1480.65 1021.878 8.85 8.86 9.653 3.12652 4.51124 28.38 1480.66 1021.884 9.15 9.16 9.652 3.12662 4.51142 28.38 1480.66 1021.886 9.45 9.45 9.642 3.12649 4.51261 28.39 1480.64 1021.895 9.75 9.75 9.617 3.12592 4.51502 28.40 1480.57 1021.911 10.05 10.05 9.612 3.12523 4.51467 28.40 1480.55 1021.910 10.35 10.35 9.620 3.13008 4.52064 28.44 1480.63 1021.944 10.65 10.65 9.619 3.13275 4.52466 28.47 1480.67 1021.967 10.95 10.95 9.617 3.13511 4.52823 28.49 1480.70 1021.987 11.25 11.25 9.619 3.13673 4.53040 28.51 1480.73 1022.000 11.55 11.55 9.610 3.14153 4.53850 28.56 1480.77 1022.046 11.85 11.85 9.604 3.14163 4.53941 28.57 1480.76 1022.053 12.15 12.15 9.602 3.14251 4.54091 28.58 1480.77 1022.062 12.45 12.45 9.599 3.14409 4.54361 28.60 1480.78 1022.078 12.75 12.75 9.604 3.14824 4.54896 28.64 1480.85 1022.108 13.05 13.05 9.609 3.15012 4.55097 28.65 1480.89 1022.120 13.35 13.34 9.616 3.15096 4.55124 28.65 1480.93 1022.123 13.65 13.64 9.635 3.15266 4.55131 28.66 1481.00 1022.123 13.95 13.94 9.649 3.15650 4.55493 28.68 1481.09 1022.143 14.25 14.24 9.656 3.15728 4.55521 28.69 1481.13 1022.146 14.55 14.54 9.666 3.15908 4.55651 28.70 1481.18 1022.153 14.85 14.84 9.685 3.16256 4.55893 28.71 1481.28 1022.167 15.15 15.14 9.719 3.16665 4.56043 28.73 1481.43 1022.174 15.45 15.44 9.725 3.16711 4.56026 28.73 1481.45 1022.174 15.75 15.74 9.729 3.16848 4.56169 28.74 1481.49 1022.183 16.05 16.04 9.728 3.16890 4.56246 28.74 1481.49 1022.188 16.35 16.34 9.735 3.17114 4.56474 28.76 1481.55 1022.201 16.65 16.64 9.732 3.17208 4.56649 28.77 1481.55 1022.212 16.95 16.93 9.713 3.17084 4.56720 28.77 1481.49 1022.219 17.25 17.23 9.684 3.16636 4.56457 28.75 1481.36 1022.207 17.55 17.53 9.656 3.15965 4.55857 28.71 1481.21 1022.178 17.85 17.83 9.626 3.15802 4.56021 28.72 1481.11 1022.190 18.15 18.13 9.589 3.15562 4.56161 28.72 1480.99 1022.201 18.45 18.43 9.549 3.15307 4.56318 28.73 1480.85 1022.213 18.75 18.73 9.526 3.15015 4.56195 28.72 1480.76 1022.209 19.05 19.03 9.514 3.15004 4.56338 28.72 1480.73 1022.219 19.35 19.33 9.508 3.15035 4.56465 28.73 1480.72 1022.228 19.65 19.63 9.505 3.15056 4.56541 28.74 1480.72 1022.233 19.95 19.93 9.503 3.15019 4.56511 28.73 1480.71 1022.233 20.25 20.23 9.502 3.15043 4.56559 28.74 1480.72 1022.237 20.55 20.52 9.502 3.15140 4.56702 28.75 1480.74 1022.246 20.85 20.82 9.496 3.15246 4.56926 28.76 1480.74 1022.260 21.15 21.12 9.483 3.15189 4.57027 28.77 1480.70 1022.267 21.45 21.42 9.461 3.15197 4.57320 28.78 1480.65 1022.286 21.75 21.72 9.436 3.15198 4.57664 28.81 1480.58 1022.307 22.05 22.02 9.422 3.15142 4.57756 28.81 1480.54 1022.314 22.35 22.32 9.402 3.15177 4.58083 28.83 1480.50 1022.334 22.65 22.62 9.375 3.15207 4.58487 28.85 1480.43 1022.359 22.95 22.92 9.362 3.15310 4.58811 28.88 1480.41 1022.379 23.25 23.22 9.357 3.15425 4.59035 28.89 1480.42 1022.392 23.55 23.52 9.340 3.15346 4.59155 28.90 1480.37 1022.401 23.85 23.81 9.322 3.15194 4.59173 28.90 1480.30 1022.404 24.15 24.11 9.309 3.15058 4.59148 28.89 1480.26 1022.405 24.45 24.41 9.281 3.14819 4.59174 28.89 1480.16 1022.409 24.75 24.71 9.243 3.14659 4.59454 28.91 1480.04 1022.428 25.05 25.01 9.227 3.14460 4.59368 28.90 1479.97 1022.425 25.35 25.31 9.244 3.14309 4.58929 28.87 1480.00 1022.402 25.65 25.61 9.224 3.13846 4.58515 28.84 1479.90 1022.382 25.95 25.91 9.178 3.13914 4.59231 28.88 1479.79 1022.424 26.25 26.21 9.126 3.14347 4.60564 28.97 1479.70 1022.500 26.55 26.51 9.114 3.14352 4.60740 28.98 1479.67 1022.512 26.85 26.81 9.098 3.14112 4.60605 28.97 1479.60 1022.507 27.15 27.10 9.076 3.14152 4.60958 28.99 1479.55 1022.528 27.45 27.40 9.032 3.13936 4.61231 29.00 1479.41 1022.546 27.89 27.85 9.040 3.13814 4.60955 28.98 1479.42 1022.533