*2026/01/16 10:37:51.96 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/09 22:35:41.000 END TIME : UTC 2025/04/09 22:36:01.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 101 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 30.21 2 Depth metres 0.15 30.16 3 Temperature 'deg C (ITS90)' 8.576 10.086 4 Conductivity S/m 0.81247 3.15216 5 Conductance:Specific S/m 1.17462 4.68343 6 Salinity PSS-78 6.57 29.44 7 Speed:Sound m/s 1453.75 1478.57 8 Density kg/m^3 1004.878 1022.961 $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 : 104 LATITUDE : 49 41.54440 N ! (deg min) LONGITUDE : 126 37.46520 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250409_223541 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:28 101 101 MERGEHDR 1.3 2026/01/16 10:35:41 101 101 HDREDIT2 3.2 2026/01/16 10:36:12 ? ? REMOVECH 8.2 2026/01/16 10:36:39 101 101 CALIB 12.1 2026/01/16 10:37:15 101 101 CLEAN 5.3 2026/01/16 10:37:51 101 101 $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 9.584 0.81247 1.17462 6.57 1453.75 1004.878 0.45 0.46 9.701 1.04409 1.50443 8.58 1456.66 1006.432 0.75 0.76 9.897 1.33063 1.90649 11.09 1460.48 1008.362 1.05 1.06 10.080 1.60546 2.28827 13.52 1464.14 1010.234 1.35 1.37 10.086 1.79103 2.55237 15.23 1466.23 1011.559 1.65 1.67 10.061 1.95226 2.78412 16.74 1467.96 1012.737 1.95 1.97 10.039 2.06244 2.94308 17.78 1469.15 1013.552 2.25 2.27 9.984 2.17874 3.11393 18.91 1470.30 1014.437 2.55 2.57 9.879 2.29692 3.29269 20.09 1471.35 1015.372 2.85 2.87 9.751 2.58353 3.71724 22.94 1474.32 1017.605 3.15 3.17 9.691 2.75803 3.97515 24.69 1476.22 1018.977 3.45 3.47 9.611 2.82724 4.08434 25.43 1476.83 1019.566 3.75 3.77 9.543 2.89198 4.18611 26.12 1477.42 1020.116 4.05 4.07 9.443 2.92686 4.24885 26.54 1477.56 1020.460 4.35 4.37 9.347 2.94232 4.28326 26.77 1477.48 1020.652 4.65 4.67 9.261 2.95561 4.31339 26.97 1477.41 1020.821 4.95 4.97 9.183 2.96128 4.33153 27.08 1477.26 1020.924 5.25 5.27 9.120 2.97196 4.35518 27.24 1477.22 1021.056 5.55 5.57 9.054 2.98145 4.37748 27.39 1477.16 1021.181 5.85 5.87 8.994 2.99224 4.40114 27.54 1477.13 1021.313 6.15 6.17 8.985 2.99705 4.40943 27.60 1477.17 1021.359 6.45 6.47 8.957 3.00488 4.42458 27.70 1477.19 1021.444 6.75 6.77 8.960 3.01572 4.44009 27.81 1477.34 1021.529 7.05 7.07 8.956 3.01896 4.44546 27.84 1477.37 1021.559 7.35 7.37 8.954 3.02372 4.45271 27.89 1477.43 1021.600 7.65 7.67 8.956 3.02739 4.45779 27.93 1477.49 1021.628 7.95 7.97 8.940 3.03140 4.46585 27.98 1477.50 1021.674 8.25 8.26 8.898 3.03052 4.46999 28.00 1477.37 1021.699 8.55 8.56 8.876 3.02817 4.46947 28.00 1477.29 1021.699 8.85 8.86 8.862 3.02651 4.46886 27.99 1477.23 1021.698 9.15 9.16 8.830 3.02742 4.47443 28.03 1477.16 1021.730 9.45 9.46 8.803 3.03009 4.48204 28.08 1477.12 1021.774 9.75 9.76 8.792 3.03221 4.48664 28.11 1477.12 1021.801 10.05 10.06 8.779 3.03397 4.49094 28.13 1477.11 1021.826 10.35 10.36 8.770 3.03580 4.49475 28.16 1477.12 1021.848 10.65 10.66 8.764 3.03575 4.49557 28.16 1477.10 1021.854 10.95 10.96 8.757 3.03621 4.49720 28.17 1477.09 1021.865 11.25 11.26 8.748 3.03775 4.50058 28.20 1477.09 1021.884 11.55 11.56 8.741 3.04023 4.50522 28.23 1477.11 1021.911 11.85 11.86 8.732 3.04706 4.51656 28.30 1477.17 1021.974 12.15 12.16 8.726 3.05185 4.52448 28.36 1477.22 1022.019 12.45 12.45 8.722 3.05573 4.53079 28.40 1477.26 1022.054 12.75 12.75 8.717 3.05734 4.53387 28.42 1477.27 1022.072 13.05 13.05 8.712 3.05975 4.53808 28.45 1477.30 1022.097 13.35 13.35 8.705 3.06441 4.54594 28.50 1477.34 1022.141 13.65 13.65 8.707 3.06602 4.54811 28.52 1477.37 1022.154 13.95 13.95 8.713 3.06782 4.54991 28.53 1477.41 1022.164 14.25 14.25 8.720 3.06946 4.55137 28.54 1477.46 1022.173 14.55 14.55 8.724 3.07231 4.55509 28.57 1477.51 1022.195 14.85 14.85 8.716 3.07698 4.56308 28.62 1477.55 1022.240 15.15 15.15 8.699 3.07655 4.56469 28.63 1477.51 1022.250 15.45 15.45 8.688 3.07535 4.56444 28.63 1477.46 1022.251 15.75 15.75 8.664 3.07505 4.56729 28.65 1477.40 1022.268 16.05 16.04 8.645 3.07740 4.57334 28.68 1477.38 1022.303 16.35 16.34 8.634 3.07936 4.57769 28.71 1477.38 1022.329 16.65 16.64 8.625 3.08119 4.58163 28.74 1477.38 1022.352 16.95 16.94 8.618 3.08227 4.58429 28.76 1477.38 1022.367 17.25 17.24 8.612 3.08313 4.58636 28.77 1477.38 1022.380 17.55 17.54 8.607 3.08287 4.58662 28.77 1477.37 1022.383 17.85 17.84 8.605 3.08346 4.58785 28.78 1477.37 1022.391 18.15 18.14 8.601 3.08352 4.58844 28.78 1477.37 1022.396 18.45 18.44 8.598 3.08343 4.58878 28.78 1477.36 1022.399 18.75 18.74 8.595 3.08428 4.59041 28.80 1477.37 1022.409 19.05 19.04 8.593 3.08572 4.59278 28.81 1477.39 1022.423 19.35 19.33 8.588 3.08793 4.59675 28.84 1477.41 1022.447 19.65 19.63 8.586 3.08816 4.59738 28.84 1477.41 1022.451 19.95 19.93 8.586 3.08857 4.59796 28.85 1477.42 1022.456 20.25 20.23 8.586 3.08909 4.59883 28.85 1477.43 1022.462 20.55 20.53 8.585 3.08976 4.59987 28.86 1477.44 1022.469 20.85 20.83 8.584 3.08997 4.60031 28.86 1477.45 1022.472 21.15 21.13 8.585 3.09229 4.60367 28.88 1477.48 1022.492 21.45 21.43 8.585 3.09492 4.60758 28.91 1477.52 1022.514 21.75 21.73 8.586 3.09722 4.61093 28.94 1477.56 1022.534 22.05 22.03 8.585 3.09893 4.61361 28.95 1477.58 1022.550 22.35 22.33 8.584 3.10106 4.61694 28.98 1477.61 1022.569 22.65 22.62 8.581 3.10130 4.61769 28.98 1477.61 1022.574 22.95 22.92 8.580 3.10181 4.61849 28.99 1477.62 1022.580 23.25 23.22 8.579 3.10175 4.61860 28.99 1477.62 1022.582 23.55 23.52 8.578 3.10293 4.62052 29.00 1477.64 1022.594 23.85 23.82 8.577 3.10347 4.62139 29.01 1477.65 1022.600 24.15 24.12 8.576 3.10394 4.62225 29.01 1477.65 1022.606 24.45 24.42 8.576 3.10568 4.62483 29.03 1477.68 1022.621 24.75 24.72 8.582 3.10713 4.62618 29.04 1477.72 1022.630 25.05 25.02 8.585 3.10929 4.62895 29.06 1477.76 1022.646 25.35 25.32 8.587 3.11182 4.63254 29.08 1477.80 1022.666 25.65 25.61 8.591 3.11429 4.63565 29.11 1477.85 1022.684 25.95 25.91 8.598 3.11848 4.64092 29.14 1477.93 1022.714 26.25 26.21 8.603 3.12314 4.64715 29.19 1478.00 1022.749 26.55 26.51 8.606 3.12590 4.65083 29.21 1478.05 1022.770 26.85 26.81 8.609 3.12772 4.65316 29.23 1478.09 1022.784 27.15 27.11 8.610 3.12884 4.65464 29.24 1478.11 1022.793 27.45 27.41 8.612 3.13036 4.65666 29.25 1478.14 1022.805 27.75 27.71 8.613 3.13023 4.65624 29.25 1478.15 1022.804 28.05 28.01 8.615 3.13087 4.65699 29.26 1478.16 1022.810 28.35 28.31 8.615 3.13214 4.65888 29.27 1478.18 1022.821 28.65 28.60 8.614 3.13427 4.66210 29.29 1478.22 1022.840 28.95 28.90 8.616 3.13697 4.66582 29.32 1478.26 1022.861 29.25 29.20 8.620 3.13991 4.66974 29.34 1478.31 1022.884 29.55 29.50 8.624 3.14607 4.67830 29.40 1478.41 1022.932 29.85 29.80 8.636 3.14936 4.68149 29.43 1478.49 1022.950 30.21 30.16 8.652 3.15216 4.68343 29.44 1478.57 1022.961