*2026/01/16 10:37:58.40 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/22 22:06:50.000 END TIME : UTC 2025/07/22 22:07:17.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 138 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 41.16 2 Depth metres 0.15 40.96 3 Temperature 'deg C (ITS90)' 9.251 17.289 4 Conductivity S/m 3.46887 3.96447 5 Conductance:Specific S/m 4.66316 5.06554 6 Salinity PSS-78 30.07 32.2 7 Speed:Sound m/s 1484.27 1508.15 8 Density kg/m^3 1021.67 1025.067 $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 : 231 LATITUDE : 49 52.98810 N ! (deg min) LONGITUDE : 126 45.86410 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250722_220650 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:34 138 138 MERGEHDR 1.3 2026/01/16 10:35:48 138 138 HDREDIT2 3.2 2026/01/16 10:36:19 ? ? REMOVECH 8.2 2026/01/16 10:36:52 138 138 CALIB 12.1 2026/01/16 10:37:22 138 138 CLEAN 5.3 2026/01/16 10:37:58 138 138 $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 10:36:52 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 16.980 3.96447 4.72188 30.47 1507.59 1022.050 0.45 0.45 17.126 3.95719 4.69690 30.30 1507.84 1021.886 0.75 0.75 17.289 3.94404 4.66316 30.07 1508.08 1021.670 1.05 1.05 17.264 3.95121 4.67447 30.15 1508.10 1021.739 1.35 1.35 17.280 3.95279 4.67454 30.15 1508.15 1021.737 1.65 1.65 17.224 3.95053 4.67803 30.17 1508.01 1021.768 1.95 1.95 16.981 3.94784 4.70195 30.33 1507.46 1021.948 2.25 2.24 16.696 3.94306 4.72836 30.50 1506.80 1022.148 2.55 2.54 16.438 3.92481 4.73577 30.54 1506.05 1022.237 2.85 2.84 16.282 3.91674 4.74392 30.59 1505.63 1022.312 3.15 3.14 16.033 3.89203 4.74253 30.57 1504.84 1022.349 3.45 3.44 15.665 3.86386 4.75082 30.61 1503.73 1022.460 3.75 3.74 15.400 3.84731 4.76155 30.67 1502.97 1022.565 4.05 4.04 15.110 3.82964 4.77395 30.73 1502.13 1022.682 4.35 4.34 14.790 3.80278 4.77856 30.75 1501.12 1022.759 4.65 4.64 14.271 3.78777 4.82259 31.02 1499.77 1023.081 4.95 4.94 13.854 3.73382 4.80490 30.86 1498.22 1023.045 5.25 5.23 13.618 3.69833 4.78830 30.73 1497.29 1022.987 5.55 5.53 13.263 3.67930 4.80787 30.84 1496.24 1023.143 5.85 5.83 12.886 3.66122 4.83184 30.97 1495.14 1023.324 6.15 6.13 12.526 3.65133 4.86508 31.18 1494.16 1023.552 6.45 6.43 12.286 3.63683 4.87699 31.24 1493.42 1023.646 6.75 6.73 12.102 3.62602 4.88658 31.29 1492.85 1023.720 7.05 7.03 11.928 3.61979 4.90117 31.37 1492.36 1023.820 7.35 7.33 11.837 3.61750 4.91020 31.43 1492.12 1023.881 7.65 7.62 11.735 3.61114 4.91518 31.45 1491.80 1023.920 7.95 7.92 11.615 3.60526 4.92322 31.50 1491.44 1023.977 8.25 8.22 11.514 3.60192 4.93229 31.55 1491.16 1024.038 8.55 8.52 11.418 3.59729 4.93887 31.59 1490.87 1024.085 8.85 8.82 11.361 3.59491 4.94340 31.61 1490.70 1024.116 9.15 9.12 11.330 3.59106 4.94221 31.60 1490.59 1024.114 9.45 9.42 11.293 3.58825 4.94348 31.61 1490.47 1024.126 9.75 9.71 11.250 3.58853 4.94971 31.65 1490.37 1024.165 10.05 10.01 11.217 3.58738 4.95261 31.66 1490.28 1024.186 10.35 10.31 11.185 3.58643 4.95566 31.68 1490.19 1024.206 10.65 10.61 11.158 3.58563 4.95826 31.70 1490.12 1024.224 10.95 10.91 11.125 3.58463 4.96145 31.71 1490.03 1024.246 11.25 11.21 11.098 3.58358 4.96362 31.73 1489.96 1024.262 11.55 11.51 11.067 3.58181 4.96548 31.74 1489.86 1024.276 11.85 11.80 11.028 3.57807 4.96568 31.73 1489.73 1024.282 12.15 12.10 10.984 3.57410 4.96628 31.73 1489.58 1024.290 12.45 12.40 10.956 3.57291 4.96845 31.74 1489.50 1024.306 12.75 12.70 10.903 3.57125 4.97347 31.77 1489.35 1024.339 13.05 13.00 10.848 3.56447 4.97170 31.75 1489.14 1024.335 13.35 13.30 10.784 3.56024 4.97462 31.77 1488.93 1024.358 13.65 13.60 10.726 3.55456 4.97473 31.76 1488.72 1024.364 13.95 13.89 10.678 3.55159 4.97727 31.77 1488.57 1024.383 14.25 14.19 10.633 3.55012 4.98153 31.80 1488.44 1024.412 14.55 14.49 10.579 3.54920 4.98777 31.84 1488.30 1024.452 14.85 14.79 10.541 3.54715 4.99026 31.85 1488.19 1024.469 15.15 15.09 10.511 3.54550 4.99215 31.86 1488.10 1024.483 15.45 15.39 10.483 3.54451 4.99469 31.87 1488.02 1024.501 15.75 15.69 10.456 3.54208 4.99499 31.87 1487.93 1024.506 16.05 15.98 10.408 3.53865 4.99691 31.88 1487.77 1024.521 16.35 16.28 10.364 3.53736 5.00132 31.90 1487.65 1024.550 16.65 16.58 10.328 3.53420 5.00200 31.90 1487.52 1024.557 16.95 16.88 10.284 3.53316 5.00669 31.93 1487.40 1024.588 17.25 17.18 10.240 3.52818 5.00595 31.92 1487.23 1024.588 17.55 17.48 10.191 3.52279 5.00518 31.91 1487.05 1024.588 17.85 17.77 10.144 3.52156 5.01024 31.94 1486.92 1024.621 18.15 18.07 10.091 3.52018 5.01574 31.97 1486.77 1024.656 18.45 18.37 10.059 3.51804 5.01733 31.98 1486.67 1024.668 18.75 18.67 10.021 3.51600 5.01990 31.99 1486.55 1024.686 19.05 18.97 9.985 3.51327 5.02112 32.00 1486.43 1024.696 19.35 19.27 9.940 3.51146 5.02498 32.02 1486.30 1024.721 19.65 19.57 9.904 3.50984 5.02789 32.03 1486.19 1024.741 19.95 19.86 9.858 3.50554 5.02833 32.03 1486.03 1024.748 20.25 20.16 9.819 3.50240 5.02946 32.03 1485.90 1024.757 20.55 20.46 9.786 3.49881 5.02903 32.02 1485.77 1024.758 20.85 20.76 9.752 3.49675 5.03098 32.03 1485.66 1024.772 21.15 21.06 9.721 3.49613 5.03468 32.06 1485.58 1024.796 21.45 21.36 9.693 3.49510 5.03721 32.07 1485.50 1024.813 21.75 21.65 9.671 3.49430 5.03930 32.08 1485.44 1024.827 22.05 21.95 9.653 3.49317 5.04024 32.09 1485.39 1024.834 22.35 22.25 9.637 3.49249 5.04154 32.09 1485.34 1024.843 22.65 22.55 9.608 3.49098 5.04363 32.10 1485.25 1024.858 22.95 22.85 9.593 3.48988 5.04424 32.10 1485.20 1024.863 23.25 23.15 9.577 3.48792 5.04374 32.10 1485.14 1024.863 23.55 23.44 9.570 3.48726 5.04381 32.10 1485.12 1024.865 23.85 23.74 9.549 3.48669 5.04602 32.11 1485.07 1024.879 24.15 24.04 9.530 3.48562 5.04723 32.12 1485.01 1024.888 24.45 24.34 9.518 3.48542 5.04876 32.13 1484.98 1024.899 24.75 24.64 9.499 3.48511 5.05103 32.14 1484.93 1024.913 25.05 24.94 9.490 3.48500 5.05213 32.15 1484.91 1024.921 25.35 25.23 9.479 3.48342 5.05148 32.14 1484.87 1024.919 25.65 25.53 9.475 3.48296 5.05146 32.14 1484.86 1024.921 25.95 25.83 9.458 3.48275 5.05365 32.15 1484.82 1024.935 26.25 26.13 9.441 3.48044 5.05272 32.14 1484.75 1024.932 26.55 26.43 9.420 3.47912 5.05399 32.15 1484.68 1024.941 26.85 26.73 9.400 3.47721 5.05413 32.15 1484.61 1024.944 27.15 27.02 9.389 3.47765 5.05636 32.16 1484.59 1024.958 27.45 27.32 9.378 3.47695 5.05691 32.16 1484.56 1024.963 27.75 27.62 9.373 3.47659 5.05718 32.16 1484.55 1024.966 28.05 27.92 9.363 3.47548 5.05693 32.16 1484.52 1024.967 28.35 28.22 9.353 3.47452 5.05713 32.16 1484.48 1024.970 28.65 28.52 9.333 3.47448 5.05995 32.18 1484.43 1024.987 28.95 28.81 9.328 3.47516 5.06167 32.19 1484.43 1024.998 29.25 29.11 9.319 3.47378 5.06096 32.18 1484.40 1024.996 29.55 29.41 9.311 3.47292 5.06088 32.18 1484.37 1024.997 29.85 29.71 9.301 3.47142 5.06018 32.17 1484.33 1024.995 30.15 30.01 9.295 3.47136 5.06103 32.18 1484.32 1025.002 30.45 30.31 9.285 3.47132 5.06248 32.19 1484.30 1025.011 30.75 30.60 9.283 3.47095 5.06225 32.19 1484.29 1025.011 31.05 30.90 9.279 3.47163 5.06376 32.20 1484.30 1025.021 31.35 31.20 9.279 3.47111 5.06308 32.19 1484.29 1025.019 31.65 31.50 9.273 3.47104 5.06385 32.20 1484.28 1025.024 31.95 31.80 9.271 3.47091 5.06392 32.20 1484.28 1025.026 32.25 32.10 9.269 3.47069 5.06393 32.19 1484.28 1025.028 32.55 32.39 9.266 3.47058 5.06410 32.20 1484.28 1025.030 32.85 32.69 9.267 3.47136 5.06514 32.20 1484.29 1025.037 33.15 32.99 9.269 3.47072 5.06389 32.19 1484.29 1025.031 33.45 33.29 9.269 3.47100 5.06440 32.20 1484.30 1025.035 33.75 33.59 9.270 3.46988 5.06264 32.19 1484.29 1025.027 34.05 33.89 9.268 3.47072 5.06412 32.20 1484.30 1025.036 34.35 34.18 9.269 3.47086 5.06422 32.20 1484.31 1025.038 34.65 34.48 9.268 3.47057 5.06387 32.19 1484.31 1025.037 34.95 34.78 9.268 3.47071 5.06407 32.19 1484.32 1025.040 35.25 35.08 9.256 3.47054 5.06554 32.20 1484.29 1025.050 35.55 35.38 9.253 3.46941 5.06445 32.19 1484.27 1025.045 35.85 35.68 9.251 3.46887 5.06393 32.19 1484.27 1025.044 36.15 35.97 9.253 3.46920 5.06401 32.19 1484.28 1025.045 36.45 36.27 9.259 3.46977 5.06403 32.19 1484.31 1025.046 36.75 36.57 9.267 3.47029 5.06364 32.19 1484.34 1025.045 37.05 36.87 9.260 3.47014 5.06437 32.19 1484.33 1025.051 37.35 37.17 9.260 3.47000 5.06422 32.19 1484.33 1025.051 37.65 37.47 9.258 3.47026 5.06490 32.20 1484.33 1025.056 37.95 37.76 9.259 3.46974 5.06405 32.19 1484.33 1025.053 38.25 38.06 9.258 3.46969 5.06407 32.19 1484.33 1025.054 38.55 38.36 9.255 3.46949 5.06420 32.19 1484.33 1025.056 38.85 38.66 9.256 3.46980 5.06450 32.19 1484.34 1025.059 39.15 38.96 9.261 3.47002 5.06417 32.19 1484.36 1025.058 39.45 39.26 9.264 3.46966 5.06318 32.19 1484.37 1025.054 39.75 39.55 9.264 3.47002 5.06371 32.19 1484.38 1025.058 40.05 39.85 9.262 3.46947 5.06311 32.18 1484.37 1025.056 40.35 40.15 9.260 3.46979 5.06395 32.19 1484.37 1025.062 40.65 40.45 9.258 3.46977 5.06420 32.19 1484.37 1025.065 40.95 40.75 9.254 3.46938 5.06421 32.19 1484.36 1025.066 41.16 40.96 9.261 3.47012 5.06422 32.19 1484.39 1025.067