*2026/01/16 10:37:57.87 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/22 00:20:48.000 END TIME : UTC 2025/07/22 00:21:08.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 103 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 30.76 2 Depth metres 0.15 30.64 3 Temperature 'deg C (ITS90)' 8.709 20.549 4 Conductivity S/m 3.46174 3.70736 5 Conductance:Specific S/m 3.82696 5.13653 6 Salinity PSS-78 24.24 32.63 7 Speed:Sound m/s 1482.69 1511.23 8 Density kg/m^3 1016.445 1025.443 $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 : 218 LATITUDE : 49 39.64000 N ! (deg min) LONGITUDE : 126 9.44560 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250722_002048 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:33 103 103 MERGEHDR 1.3 2026/01/16 10:35:48 103 103 HDREDIT2 3.2 2026/01/16 10:36:19 ? ? REMOVECH 8.2 2026/01/16 10:36:51 103 103 CALIB 12.1 2026/01/16 10:37:22 103 103 CLEAN 5.3 2026/01/16 10:37:57 103 103 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:19 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 10:36:51 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:22 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 20.486 3.52410 3.87381 24.57 1511.23 1016.707 0.45 0.45 20.549 3.48627 3.82696 24.24 1511.05 1016.445 0.75 0.75 20.497 3.50634 3.85342 24.43 1511.11 1016.599 1.05 1.05 20.409 3.51772 3.87334 24.57 1511.03 1016.727 1.35 1.35 20.183 3.52359 3.89922 24.74 1510.59 1016.919 1.65 1.65 19.911 3.52768 3.92738 24.93 1510.03 1017.133 1.95 1.95 19.604 3.53240 3.95977 25.15 1509.39 1017.377 2.25 2.26 19.268 3.53286 3.99028 25.36 1508.66 1017.616 2.55 2.56 18.899 3.56271 4.05787 25.82 1508.10 1018.060 2.85 2.86 18.677 3.59328 4.11348 26.21 1507.89 1018.408 3.15 3.16 18.338 3.62923 4.18708 26.72 1507.46 1018.877 3.45 3.46 17.916 3.64431 4.24589 27.12 1506.66 1019.283 3.75 3.76 17.500 3.66363 4.31013 27.56 1505.91 1019.715 4.05 4.06 17.164 3.67858 4.36226 27.91 1505.30 1020.065 4.35 4.36 16.920 3.68566 4.39607 28.14 1504.82 1020.297 4.65 4.66 16.663 3.68969 4.42802 28.36 1504.28 1020.520 4.95 4.96 16.393 3.69272 4.46055 28.57 1503.69 1020.748 5.25 5.25 16.186 3.69687 4.48802 28.76 1503.26 1020.936 5.55 5.55 15.890 3.70441 4.52971 29.04 1502.67 1021.217 5.85 5.85 15.609 3.70736 4.56474 29.27 1502.05 1021.458 6.15 6.15 15.425 3.70275 4.57982 29.37 1501.58 1021.573 6.45 6.45 15.247 3.70100 4.59789 29.49 1501.16 1021.702 6.75 6.75 15.138 3.69925 4.60815 29.55 1500.89 1021.777 7.05 7.05 15.058 3.69806 4.61590 29.60 1500.70 1021.834 7.35 7.35 14.923 3.70003 4.63396 29.72 1500.41 1021.956 7.65 7.65 14.804 3.69331 4.63934 29.75 1500.07 1022.005 7.95 7.95 14.677 3.69079 4.65099 29.83 1499.75 1022.090 8.25 8.25 14.455 3.68526 4.67024 29.95 1499.17 1022.231 8.55 8.55 14.233 3.68433 4.69546 30.11 1498.64 1022.404 8.85 8.85 14.019 3.67600 4.71055 30.20 1498.05 1022.519 9.15 9.15 13.695 3.66089 4.73046 30.32 1497.13 1022.675 9.45 9.44 13.312 3.64057 4.75116 30.43 1495.99 1022.841 9.75 9.74 12.783 3.61665 4.78612 30.64 1494.45 1023.101 10.05 10.04 12.298 3.59942 4.82526 30.87 1493.08 1023.374 10.35 10.34 11.977 3.59315 4.85857 31.07 1492.23 1023.594 10.65 10.64 11.753 3.58956 4.88329 31.23 1491.64 1023.754 10.95 10.94 11.563 3.58432 4.90156 31.34 1491.12 1023.875 11.25 11.24 11.396 3.57446 4.91048 31.38 1490.59 1023.942 11.55 11.54 11.039 3.55652 4.93421 31.51 1489.50 1024.106 11.85 11.83 10.863 3.55289 4.95336 31.63 1489.02 1024.228 12.15 12.13 10.727 3.55111 4.96975 31.73 1488.66 1024.330 12.45 12.43 10.587 3.54634 4.98263 31.80 1488.25 1024.414 12.75 12.73 10.467 3.53978 4.99021 31.84 1487.88 1024.466 13.05 13.03 10.381 3.53614 4.99718 31.88 1487.62 1024.512 13.35 13.33 10.301 3.53055 5.00068 31.89 1487.36 1024.538 13.65 13.62 10.247 3.52586 5.00157 31.89 1487.17 1024.548 13.95 13.92 10.198 3.52523 5.00774 31.93 1487.04 1024.587 14.25 14.22 10.123 3.52024 5.01125 31.95 1486.79 1024.612 14.55 14.52 10.060 3.51635 5.01475 31.96 1486.59 1024.637 14.85 14.82 10.017 3.51521 5.01934 31.99 1486.47 1024.667 15.15 15.12 9.985 3.51410 5.02233 32.01 1486.38 1024.686 15.45 15.42 9.954 3.51340 5.02572 32.03 1486.30 1024.708 15.75 15.71 9.911 3.51076 5.02815 32.04 1486.16 1024.726 16.05 16.01 9.862 3.50678 5.02956 32.04 1485.99 1024.738 16.35 16.31 9.818 3.50476 5.03299 32.06 1485.86 1024.760 16.65 16.61 9.771 3.50235 5.03629 32.08 1485.72 1024.783 16.95 16.91 9.720 3.50039 5.04094 32.10 1485.56 1024.813 17.25 17.21 9.677 3.49869 5.04463 32.12 1485.44 1024.837 17.55 17.50 9.638 3.49689 5.04776 32.14 1485.32 1024.857 17.85 17.80 9.605 3.49494 5.04981 32.15 1485.22 1024.872 18.15 18.10 9.582 3.49339 5.05083 32.15 1485.15 1024.880 18.45 18.40 9.564 3.49318 5.05321 32.17 1485.10 1024.895 18.75 18.70 9.555 3.49149 5.05210 32.16 1485.06 1024.891 19.05 19.00 9.537 3.49055 5.05334 32.16 1485.01 1024.900 19.35 19.29 9.520 3.48982 5.05484 32.17 1484.96 1024.911 19.65 19.59 9.505 3.48944 5.05642 32.18 1484.92 1024.921 19.95 19.89 9.493 3.48915 5.05779 32.19 1484.89 1024.931 20.25 20.19 9.477 3.48773 5.05799 32.19 1484.84 1024.934 20.55 20.49 9.457 3.48744 5.06053 32.20 1484.79 1024.950 20.85 20.79 9.443 3.48644 5.06112 32.20 1484.74 1024.956 21.15 21.08 9.425 3.48445 5.06087 32.20 1484.68 1024.956 21.45 21.38 9.410 3.48327 5.06142 32.20 1484.63 1024.961 21.75 21.68 9.388 3.48247 5.06350 32.21 1484.57 1024.975 22.05 21.98 9.368 3.48068 5.06377 32.21 1484.50 1024.979 22.35 22.28 9.346 3.47918 5.06491 32.22 1484.43 1024.988 22.65 22.58 9.309 3.47713 5.06738 32.23 1484.31 1025.004 22.95 22.88 9.263 3.47427 5.06998 32.24 1484.16 1025.022 23.25 23.17 9.224 3.47267 5.07345 32.26 1484.04 1025.044 23.55 23.47 9.198 3.47164 5.07579 32.27 1483.97 1025.060 23.85 23.77 9.183 3.47120 5.07740 32.28 1483.93 1025.071 24.15 24.07 9.172 3.47003 5.07729 32.28 1483.89 1025.072 24.45 24.37 9.196 3.47826 5.08577 32.34 1484.06 1025.119 24.75 24.67 9.177 3.47608 5.08545 32.34 1483.99 1025.119 25.05 24.96 9.162 3.47494 5.08599 32.34 1483.94 1025.124 25.35 25.26 9.150 3.47248 5.08413 32.32 1483.88 1025.115 25.65 25.56 9.148 3.47242 5.08444 32.33 1483.88 1025.119 25.95 25.86 9.125 3.47106 5.08576 32.33 1483.81 1025.128 26.25 26.16 9.059 3.47347 5.09915 32.42 1483.68 1025.206 26.55 26.45 9.051 3.47254 5.09910 32.41 1483.65 1025.207 26.85 26.75 9.038 3.47254 5.10091 32.43 1483.62 1025.219 27.15 27.05 9.028 3.47257 5.10250 32.43 1483.60 1025.230 27.45 27.35 9.013 3.47159 5.10330 32.44 1483.55 1025.236 27.75 27.65 8.990 3.47236 5.10794 32.47 1483.51 1025.264 28.05 27.95 8.965 3.46805 5.10538 32.45 1483.39 1025.252 28.35 28.24 8.914 3.46501 5.10857 32.46 1483.23 1025.273 28.65 28.54 8.827 3.46257 5.11807 32.51 1482.97 1025.330 28.95 28.84 8.770 3.46260 5.12668 32.57 1482.83 1025.380 29.25 29.14 8.742 3.46174 5.12978 32.58 1482.75 1025.400 29.55 29.44 8.724 3.46237 5.13346 32.61 1482.72 1025.422 29.85 29.74 8.714 3.46243 5.13505 32.62 1482.70 1025.432 30.15 30.03 8.709 3.46218 5.13544 32.62 1482.69 1025.436 30.45 30.33 8.720 3.46403 5.13653 32.63 1482.74 1025.443 30.76 30.64 8.745 3.46494 5.13398 32.61 1482.83 1025.429