*2026/01/16 10:37:59.07 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/23 13:50:30.000 END TIME : UTC 2025/07/23 13:51:00.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 155 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 46.31 2 Depth metres 0.15 46.08 3 Temperature 'deg C (ITS90)' 8.296 15.482 4 Conductivity S/m 3.44222 3.75588 5 Conductance:Specific S/m 4.62462 5.16935 6 Salinity PSS-78 29.69 32.78 7 Speed:Sound m/s 1481.61 1502.06 8 Density kg/m^3 1021.786 1025.703 $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 : 237 LATITUDE : 49 38.32280 N ! (deg min) LONGITUDE : 126 17.84570 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250723_135030 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:35 155 155 MERGEHDR 1.3 2026/01/16 10:35:49 155 155 HDREDIT2 3.2 2026/01/16 10:36:20 ? ? REMOVECH 8.2 2026/01/16 10:36:52 155 155 CALIB 12.1 2026/01/16 10:37:23 155 155 CLEAN 5.3 2026/01/16 10:37:59 155 155 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:20 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 10:37:23 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 15.482 3.74465 4.62502 29.70 1502.05 1021.786 0.45 0.45 15.477 3.74385 4.62462 29.69 1502.03 1021.786 0.75 0.75 15.447 3.74208 4.62596 29.70 1501.95 1021.799 1.05 1.05 15.416 3.74589 4.63416 29.76 1501.92 1021.851 1.35 1.35 15.411 3.74820 4.63758 29.78 1501.94 1021.871 1.65 1.65 15.419 3.75095 4.64012 29.80 1501.99 1021.885 1.95 1.95 15.427 3.75534 4.64465 29.83 1502.06 1021.910 2.25 2.24 15.413 3.75588 4.64682 29.85 1502.04 1021.925 2.55 2.54 15.392 3.75296 4.64562 29.84 1501.96 1021.924 2.85 2.84 15.371 3.75479 4.65031 29.87 1501.94 1021.954 3.15 3.14 15.362 3.75492 4.65153 29.88 1501.92 1021.964 3.45 3.44 15.355 3.75475 4.65216 29.88 1501.91 1021.969 3.75 3.74 15.344 3.75389 4.65239 29.88 1501.88 1021.974 4.05 4.04 15.334 3.75432 4.65400 29.89 1501.87 1021.985 4.35 4.34 15.325 3.75297 4.65337 29.89 1501.84 1021.985 4.65 4.64 15.315 3.75175 4.65308 29.88 1501.81 1021.986 4.95 4.94 15.301 3.75124 4.65408 29.89 1501.77 1021.995 5.25 5.24 15.292 3.75345 4.65785 29.92 1501.78 1022.019 5.55 5.54 15.273 3.75318 4.65962 29.93 1501.74 1022.033 5.85 5.84 15.250 3.75168 4.66049 29.93 1501.68 1022.043 6.15 6.13 15.228 3.74980 4.66071 29.93 1501.61 1022.049 6.45 6.43 15.208 3.75094 4.66441 29.96 1501.58 1022.073 6.75 6.73 15.183 3.75048 4.66680 29.97 1501.52 1022.092 7.05 7.03 15.151 3.74952 4.66922 29.99 1501.45 1022.111 7.35 7.33 15.106 3.74815 4.67280 30.01 1501.33 1022.140 7.65 7.63 15.047 3.74635 4.67744 30.04 1501.18 1022.176 7.95 7.93 14.952 3.74138 4.68236 30.07 1500.91 1022.219 8.25 8.23 14.861 3.73940 4.69058 30.12 1500.69 1022.280 8.55 8.53 14.732 3.73693 4.70261 30.20 1500.37 1022.368 8.85 8.83 14.546 3.72900 4.71482 30.27 1499.85 1022.465 9.15 9.13 14.301 3.71793 4.73009 30.36 1499.17 1022.586 9.45 9.42 13.908 3.69541 4.74886 30.47 1498.01 1022.748 9.75 9.72 13.388 3.67276 4.78378 30.67 1496.53 1023.012 10.05 10.02 12.868 3.65903 4.83123 30.97 1495.14 1023.341 10.35 10.32 12.493 3.64692 4.86346 31.16 1494.10 1023.564 10.65 10.62 12.202 3.63777 4.88920 31.31 1493.29 1023.740 10.95 10.92 11.967 3.63249 4.91318 31.46 1492.67 1023.899 11.25 11.22 11.798 3.62793 4.92947 31.56 1492.21 1024.007 11.55 11.52 11.655 3.62650 4.94680 31.67 1491.84 1024.119 11.85 11.81 11.546 3.62603 4.96088 31.76 1491.57 1024.208 12.15 12.11 11.477 3.62598 4.97023 31.82 1491.41 1024.268 12.45 12.41 11.434 3.62602 4.97616 31.85 1491.31 1024.306 12.75 12.71 11.405 3.62565 4.97966 31.87 1491.24 1024.329 13.05 13.01 11.387 3.62517 4.98139 31.88 1491.19 1024.342 13.35 13.31 11.373 3.62523 4.98344 31.90 1491.16 1024.355 13.65 13.61 11.364 3.62536 4.98483 31.91 1491.15 1024.365 13.95 13.90 11.355 3.62515 4.98574 31.91 1491.13 1024.372 14.25 14.20 11.345 3.62505 4.98705 31.92 1491.11 1024.382 14.55 14.50 11.337 3.62392 4.98651 31.91 1491.08 1024.381 14.85 14.80 11.330 3.62347 4.98689 31.92 1491.06 1024.385 15.15 15.10 11.310 3.62373 4.99005 31.94 1491.02 1024.405 15.45 15.40 11.270 3.62028 4.99073 31.94 1490.88 1024.414 15.75 15.70 11.247 3.61912 4.99237 31.95 1490.82 1024.427 16.05 15.99 11.236 3.61911 4.99378 31.95 1490.80 1024.436 16.35 16.29 11.228 3.61988 4.99603 31.97 1490.79 1024.451 16.65 16.59 11.201 3.61834 4.99755 31.98 1490.71 1024.463 16.95 16.89 11.149 3.61651 5.00223 32.00 1490.56 1024.495 17.25 17.19 11.099 3.61327 5.00472 32.02 1490.41 1024.514 17.55 17.49 11.030 3.61192 5.01235 32.06 1490.23 1024.563 17.85 17.79 10.956 3.60806 5.01727 32.09 1490.00 1024.598 18.15 18.08 10.904 3.60359 5.01832 32.09 1489.82 1024.610 18.45 18.38 10.827 3.59735 5.02039 32.10 1489.56 1024.629 18.75 18.68 10.747 3.58729 5.01759 32.07 1489.25 1024.621 19.05 18.98 10.679 3.58256 5.02053 32.08 1489.03 1024.644 19.35 19.28 10.625 3.57909 5.02322 32.09 1488.86 1024.664 19.65 19.58 10.574 3.57378 5.02302 32.08 1488.67 1024.668 19.95 19.87 10.522 3.57340 5.02988 32.13 1488.54 1024.711 20.25 20.17 10.475 3.57133 5.03357 32.15 1488.40 1024.736 20.55 20.47 10.428 3.57030 5.03886 32.18 1488.27 1024.770 20.85 20.77 10.398 3.56933 5.04175 32.19 1488.19 1024.790 21.15 21.07 10.386 3.56853 5.04233 32.20 1488.16 1024.795 21.45 21.37 10.374 3.56838 5.04378 32.20 1488.13 1024.805 21.75 21.66 10.360 3.56852 5.04596 32.22 1488.10 1024.819 22.05 21.96 10.348 3.56746 5.04621 32.22 1488.06 1024.823 22.35 22.26 10.335 3.56757 5.04814 32.23 1488.04 1024.836 22.65 22.56 10.323 3.56688 5.04892 32.23 1488.00 1024.842 22.95 22.86 10.314 3.56560 5.04847 32.23 1487.97 1024.842 23.25 23.16 10.307 3.56563 5.04946 32.24 1487.96 1024.849 23.55 23.46 10.300 3.56413 5.04832 32.23 1487.93 1024.844 23.85 23.75 10.290 3.56330 5.04857 32.23 1487.89 1024.848 24.15 24.05 10.277 3.56240 5.04924 32.23 1487.85 1024.854 24.45 24.35 10.257 3.56146 5.05066 32.24 1487.80 1024.864 24.75 24.65 10.241 3.56156 5.05321 32.25 1487.76 1024.880 25.05 24.95 10.226 3.56052 5.05384 32.26 1487.72 1024.886 25.35 25.25 10.208 3.55948 5.05500 32.26 1487.66 1024.895 25.65 25.54 10.176 3.55786 5.05717 32.27 1487.57 1024.911 25.95 25.84 10.151 3.55600 5.05813 32.28 1487.49 1024.919 26.25 26.14 10.129 3.55408 5.05860 32.28 1487.41 1024.924 26.55 26.44 10.103 3.55145 5.05855 32.27 1487.32 1024.927 26.85 26.74 10.075 3.54763 5.05714 32.26 1487.21 1024.922 27.15 27.04 10.045 3.54456 5.05722 32.26 1487.10 1024.926 27.45 27.33 9.996 3.54047 5.05839 32.26 1486.93 1024.937 27.75 27.63 9.945 3.53764 5.06172 32.27 1486.77 1024.959 28.05 27.93 9.904 3.53545 5.06449 32.29 1486.65 1024.979 28.35 28.23 9.867 3.53283 5.06611 32.29 1486.52 1024.991 28.65 28.53 9.818 3.53013 5.06941 32.31 1486.37 1025.013 28.95 28.83 9.774 3.52809 5.07294 32.33 1486.24 1025.037 29.25 29.12 9.728 3.52418 5.07394 32.33 1486.08 1025.046 29.55 29.42 9.672 3.52042 5.07671 32.34 1485.89 1025.066 29.85 29.72 9.589 3.51501 5.08116 32.36 1485.62 1025.096 30.15 30.02 9.465 3.50608 5.08647 32.38 1485.19 1025.134 30.45 30.32 9.339 3.49110 5.08322 32.34 1484.69 1025.123 30.75 30.62 9.212 3.48066 5.08688 32.35 1484.23 1025.151 31.05 30.91 9.079 3.47771 5.10236 32.44 1483.86 1025.243 31.35 31.21 8.986 3.47444 5.11164 32.49 1483.58 1025.300 31.65 31.51 8.933 3.47125 5.11486 32.51 1483.41 1025.321 31.95 31.81 8.884 3.46969 5.12002 32.53 1483.26 1025.352 32.25 32.11 8.853 3.46790 5.12201 32.54 1483.17 1025.366 32.55 32.41 8.821 3.46584 5.12380 32.55 1483.06 1025.378 32.85 32.70 8.771 3.46386 5.12846 32.58 1482.91 1025.407 33.15 33.00 8.740 3.46238 5.13099 32.59 1482.82 1025.423 33.45 33.30 8.722 3.46165 5.13264 32.60 1482.77 1025.434 33.75 33.60 8.705 3.46019 5.13308 32.60 1482.71 1025.438 34.05 33.90 8.681 3.45937 5.13543 32.61 1482.64 1025.453 34.35 34.19 8.657 3.45869 5.13815 32.63 1482.57 1025.470 34.65 34.49 8.633 3.45810 5.14097 32.64 1482.51 1025.488 34.95 34.79 8.609 3.45595 5.14137 32.64 1482.42 1025.492 35.25 35.09 8.587 3.45508 5.14342 32.65 1482.36 1025.505 35.55 35.39 8.567 3.45398 5.14495 32.66 1482.30 1025.516 35.85 35.69 8.544 3.45285 5.14675 32.67 1482.23 1025.528 36.15 35.98 8.520 3.45153 5.14839 32.68 1482.15 1025.539 36.45 36.28 8.499 3.45058 5.15034 32.69 1482.09 1025.551 36.75 36.58 8.481 3.44988 5.15200 32.70 1482.04 1025.562 37.05 36.88 8.470 3.44972 5.15351 32.71 1482.01 1025.572 37.35 37.18 8.456 3.44926 5.15488 32.71 1481.98 1025.581 37.65 37.47 8.447 3.44893 5.15587 32.72 1481.95 1025.588 37.95 37.77 8.438 3.44865 5.15682 32.72 1481.93 1025.595 38.25 38.07 8.432 3.44860 5.15769 32.73 1481.92 1025.601 38.55 38.37 8.425 3.44842 5.15845 32.73 1481.90 1025.607 38.85 38.67 8.417 3.44778 5.15873 32.73 1481.88 1025.610 39.15 38.97 8.410 3.44712 5.15882 32.73 1481.86 1025.612 39.45 39.26 8.401 3.44681 5.15970 32.74 1481.83 1025.618 39.75 39.56 8.393 3.44759 5.16215 32.75 1481.83 1025.633 40.05 39.86 8.388 3.44669 5.16156 32.75 1481.81 1025.631 40.35 40.16 8.385 3.44599 5.16099 32.74 1481.79 1025.630 40.65 40.46 8.381 3.44577 5.16125 32.74 1481.79 1025.632 40.95 40.75 8.378 3.44595 5.16209 32.75 1481.78 1025.638 41.25 41.05 8.371 3.44544 5.16232 32.75 1481.77 1025.641 41.55 41.35 8.370 3.44549 5.16252 32.75 1481.77 1025.643 41.85 41.65 8.371 3.44574 5.16273 32.75 1481.78 1025.646 42.15 41.95 8.366 3.44480 5.16220 32.75 1481.76 1025.644 42.45 42.25 8.358 3.44515 5.16386 32.76 1481.75 1025.655 42.75 42.54 8.354 3.44500 5.16433 32.76 1481.74 1025.659 43.05 42.84 8.350 3.44367 5.16292 32.75 1481.72 1025.652 43.35 43.14 8.344 3.44463 5.16528 32.77 1481.72 1025.667 43.65 43.44 8.338 3.44415 5.16545 32.77 1481.70 1025.669 43.95 43.74 8.331 3.44410 5.16652 32.77 1481.69 1025.677 44.25 44.03 8.328 3.44384 5.16655 32.77 1481.68 1025.678 44.55 44.33 8.323 3.44371 5.16713 32.77 1481.67 1025.683 44.85 44.63 8.319 3.44406 5.16833 32.78 1481.67 1025.691 45.15 44.93 8.315 3.44326 5.16775 32.78 1481.65 1025.689 45.45 45.23 8.312 3.44301 5.16782 32.78 1481.65 1025.691 45.75 45.53 8.308 3.44222 5.16720 32.77 1481.63 1025.688 46.05 45.82 8.299 3.44242 5.16888 32.78 1481.61 1025.699 46.31 46.08 8.296 3.44234 5.16935 32.78 1481.61 1025.703