*2026/01/16 10:37:52.78 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/29 16:44:30.000 END TIME : UTC 2025/04/29 16:44:57.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 136 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 40.69 2 Depth metres 0.15 40.67 3 Temperature 'deg C (ITS90)' 10.584 10.707 4 Conductivity S/m 2.88127 3.01259 5 Conductance:Specific S/m 4.0385 4.23196 6 Salinity PSS-78 25.22 26.53 7 Speed:Sound m/s 1480.45 1482.38 8 Density kg/m^3 1019.233 1020.443 $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 : 117 LATITUDE : 49 11.89910 N ! (deg min) LONGITUDE : 125 45.69510 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250429_164430 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:28 136 136 MERGEHDR 1.3 2026/01/16 10:35:42 136 136 HDREDIT2 3.2 2026/01/16 10:36:13 ? ? REMOVECH 8.2 2026/01/16 10:36:40 136 136 CALIB 12.1 2026/01/16 10:37:16 136 136 CLEAN 5.3 2026/01/16 10:37:52 136 136 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:13 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 10:36:40 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:16 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 10.707 2.90680 4.07034 25.44 1480.82 1019.393 0.45 0.45 10.697 2.89978 4.06169 25.38 1480.71 1019.349 0.75 0.75 10.692 2.89873 4.06081 25.37 1480.69 1019.346 1.05 1.05 10.682 2.89369 4.05481 25.33 1480.61 1019.316 1.35 1.35 10.674 2.88803 4.04783 25.28 1480.52 1019.280 1.65 1.65 10.673 2.88425 4.04262 25.25 1480.48 1019.254 1.95 1.95 10.672 2.88127 4.03850 25.22 1480.45 1019.233 2.25 2.25 10.678 2.88466 4.04265 25.25 1480.51 1019.256 2.55 2.55 10.684 2.88381 4.04073 25.23 1480.52 1019.247 2.85 2.85 10.685 2.88392 4.04080 25.24 1480.53 1019.248 3.15 3.15 10.685 2.88402 4.04096 25.24 1480.54 1019.250 3.45 3.45 10.685 2.89369 4.05448 25.33 1480.66 1019.324 3.75 3.75 10.685 2.90822 4.07486 25.47 1480.83 1019.434 4.05 4.05 10.684 2.91013 4.07764 25.49 1480.85 1019.451 4.35 4.35 10.684 2.91032 4.07794 25.49 1480.86 1019.453 4.65 4.65 10.682 2.91032 4.07815 25.49 1480.86 1019.456 4.95 4.95 10.681 2.91034 4.07829 25.49 1480.86 1019.458 5.25 5.25 10.679 2.91075 4.07912 25.50 1480.86 1019.464 5.55 5.55 10.678 2.91086 4.07937 25.50 1480.87 1019.467 5.85 5.85 10.677 2.91128 4.08005 25.50 1480.88 1019.472 6.15 6.15 10.676 2.91060 4.07916 25.50 1480.87 1019.468 6.45 6.45 10.675 2.91083 4.07959 25.50 1480.88 1019.472 6.75 6.75 10.675 2.91193 4.08122 25.51 1480.89 1019.482 7.05 7.05 10.673 2.91217 4.08173 25.51 1480.89 1019.486 7.35 7.35 10.672 2.91207 4.08177 25.51 1480.89 1019.488 7.65 7.65 10.670 2.91277 4.08291 25.52 1480.90 1019.495 7.95 7.95 10.669 2.91320 4.08369 25.53 1480.91 1019.501 8.25 8.25 10.665 2.91352 4.08454 25.53 1480.91 1019.507 8.55 8.55 10.662 2.91386 4.08541 25.54 1480.91 1019.513 8.85 8.85 10.658 2.91587 4.08861 25.56 1480.93 1019.532 9.15 9.15 10.656 2.91562 4.08857 25.56 1480.92 1019.533 9.45 9.45 10.653 2.91554 4.08878 25.56 1480.92 1019.536 9.75 9.75 10.650 2.91602 4.08976 25.57 1480.92 1019.543 10.05 10.05 10.647 2.91594 4.09001 25.57 1480.91 1019.546 10.35 10.35 10.644 2.91690 4.09166 25.58 1480.92 1019.556 10.65 10.65 10.640 2.91798 4.09364 25.59 1480.93 1019.568 10.95 10.95 10.636 2.91887 4.09538 25.60 1480.93 1019.579 11.25 11.25 10.635 2.92122 4.09881 25.63 1480.96 1019.599 11.55 11.55 10.633 2.92182 4.09990 25.63 1480.97 1019.606 11.85 11.85 10.631 2.92345 4.10244 25.65 1480.98 1019.622 12.15 12.15 10.628 2.92414 4.10377 25.66 1480.99 1019.630 12.45 12.45 10.627 2.92414 4.10384 25.66 1480.99 1019.632 12.75 12.75 10.627 2.92364 4.10313 25.66 1480.99 1019.629 13.05 13.05 10.626 2.92385 4.10348 25.66 1481.00 1019.633 13.35 13.35 10.626 2.92507 4.10523 25.67 1481.01 1019.643 13.65 13.65 10.624 2.92542 4.10592 25.67 1481.02 1019.648 13.95 13.95 10.623 2.92760 4.10915 25.70 1481.04 1019.667 14.25 14.25 10.622 2.93049 4.11333 25.73 1481.08 1019.691 14.55 14.55 10.621 2.93482 4.11949 25.77 1481.13 1019.725 14.85 14.85 10.620 2.93664 4.12222 25.79 1481.16 1019.741 15.15 15.15 10.620 2.93923 4.12582 25.81 1481.19 1019.762 15.45 15.45 10.620 2.94096 4.12827 25.83 1481.21 1019.776 15.75 15.75 10.621 2.94389 4.13228 25.86 1481.26 1019.799 16.05 16.05 10.621 2.94410 4.13254 25.86 1481.26 1019.802 16.35 16.35 10.620 2.94359 4.13188 25.85 1481.26 1019.799 16.65 16.65 10.620 2.94475 4.13354 25.86 1481.28 1019.810 16.95 16.95 10.621 2.94478 4.13347 25.86 1481.29 1019.810 17.25 17.25 10.621 2.94462 4.13325 25.86 1481.29 1019.811 17.55 17.55 10.622 2.94454 4.13308 25.86 1481.30 1019.811 17.85 17.85 10.622 2.94425 4.13264 25.86 1481.30 1019.810 18.15 18.15 10.622 2.94496 4.13366 25.86 1481.31 1019.817 18.45 18.45 10.622 2.94490 4.13351 25.86 1481.32 1019.817 18.75 18.75 10.622 2.94643 4.13568 25.88 1481.34 1019.830 19.05 19.05 10.622 2.94814 4.13806 25.89 1481.36 1019.844 19.35 19.35 10.623 2.94997 4.14055 25.91 1481.39 1019.859 19.65 19.65 10.624 2.94987 4.14026 25.91 1481.40 1019.858 19.95 19.95 10.624 2.95045 4.14108 25.91 1481.41 1019.864 20.25 20.25 10.624 2.95079 4.14155 25.92 1481.42 1019.868 20.55 20.55 10.624 2.95224 4.14366 25.93 1481.44 1019.880 20.85 20.85 10.624 2.95284 4.14446 25.94 1481.45 1019.886 21.15 21.15 10.624 2.95338 4.14521 25.94 1481.46 1019.891 21.45 21.45 10.624 2.95375 4.14572 25.95 1481.47 1019.895 21.75 21.75 10.623 2.95329 4.14516 25.94 1481.47 1019.894 22.05 22.05 10.623 2.95278 4.14443 25.94 1481.47 1019.891 22.35 22.35 10.624 2.95308 4.14479 25.94 1481.48 1019.894 22.65 22.64 10.623 2.95306 4.14487 25.94 1481.48 1019.896 22.95 22.94 10.624 2.95336 4.14522 25.94 1481.49 1019.899 23.25 23.24 10.624 2.95436 4.14663 25.95 1481.51 1019.908 23.55 23.54 10.622 2.95438 4.14682 25.95 1481.51 1019.910 23.85 23.84 10.622 2.95619 4.14935 25.97 1481.53 1019.925 24.15 24.14 10.622 2.95640 4.14973 25.97 1481.54 1019.929 24.45 24.44 10.620 2.95591 4.14922 25.97 1481.53 1019.927 24.75 24.74 10.620 2.95645 4.15001 25.97 1481.54 1019.933 25.05 25.04 10.619 2.95892 4.15360 26.00 1481.57 1019.953 25.35 25.34 10.617 2.96160 4.15753 26.03 1481.61 1019.976 25.65 25.64 10.615 2.96297 4.15972 26.04 1481.62 1019.989 25.95 25.94 10.613 2.96408 4.16146 26.05 1481.63 1020.000 26.25 26.24 10.613 2.96421 4.16169 26.05 1481.64 1020.002 26.55 26.54 10.612 2.96412 4.16173 26.05 1481.64 1020.004 26.85 26.84 10.611 2.96472 4.16270 26.06 1481.65 1020.011 27.15 27.14 10.610 2.96503 4.16315 26.06 1481.66 1020.014 27.45 27.44 10.610 2.96551 4.16388 26.07 1481.67 1020.020 27.75 27.74 10.609 2.96554 4.16403 26.07 1481.67 1020.022 28.05 28.04 10.608 2.96613 4.16499 26.08 1481.68 1020.028 28.35 28.34 10.608 2.96617 4.16500 26.08 1481.68 1020.030 28.65 28.64 10.608 2.96745 4.16684 26.09 1481.70 1020.041 28.95 28.94 10.606 2.96744 4.16704 26.09 1481.70 1020.043 29.25 29.24 10.605 2.96885 4.16913 26.10 1481.72 1020.056 29.55 29.54 10.605 2.97028 4.17117 26.12 1481.74 1020.068 29.85 29.84 10.604 2.97084 4.17209 26.12 1481.75 1020.074 30.15 30.14 10.604 2.97111 4.17247 26.13 1481.76 1020.078 30.45 30.44 10.603 2.97293 4.17514 26.14 1481.78 1020.094 30.75 30.74 10.602 2.97488 4.17800 26.16 1481.81 1020.110 31.05 31.04 10.600 2.97475 4.17799 26.16 1481.80 1020.112 31.35 31.34 10.599 2.97549 4.17922 26.17 1481.81 1020.120 31.65 31.64 10.597 2.97665 4.18102 26.18 1481.83 1020.131 31.95 31.94 10.595 2.97898 4.18455 26.21 1481.85 1020.151 32.25 32.24 10.591 2.98366 4.19154 26.26 1481.90 1020.190 32.55 32.54 10.589 2.99016 4.20095 26.32 1481.98 1020.242 32.85 32.84 10.588 2.99610 4.20942 26.38 1482.05 1020.289 33.15 33.14 10.586 2.99774 4.21191 26.40 1482.07 1020.304 33.45 33.44 10.586 2.99815 4.21259 26.40 1482.08 1020.309 33.75 33.74 10.585 2.99965 4.21480 26.42 1482.10 1020.322 34.05 34.04 10.584 3.00075 4.21640 26.43 1482.11 1020.332 34.35 34.34 10.585 3.00030 4.21567 26.42 1482.11 1020.329 34.65 34.64 10.586 3.00214 4.21817 26.44 1482.14 1020.344 34.95 34.94 10.586 3.00368 4.22035 26.45 1482.16 1020.357 35.25 35.24 10.588 3.00481 4.22168 26.46 1482.19 1020.365 35.55 35.54 10.588 3.00547 4.22265 26.47 1482.20 1020.372 35.85 35.84 10.589 3.00581 4.22293 26.47 1482.21 1020.375 36.15 36.14 10.588 3.00606 4.22337 26.47 1482.22 1020.378 36.45 36.44 10.589 3.00592 4.22310 26.47 1482.22 1020.378 36.75 36.73 10.590 3.00667 4.22405 26.48 1482.24 1020.384 37.05 37.03 10.588 3.00703 4.22473 26.48 1482.25 1020.389 37.35 37.33 10.590 3.00754 4.22525 26.49 1482.26 1020.393 37.65 37.63 10.591 3.00736 4.22494 26.48 1482.26 1020.393 37.95 37.93 10.590 3.00746 4.22514 26.49 1482.27 1020.395 38.25 38.23 10.591 3.00772 4.22538 26.49 1482.28 1020.398 38.55 38.53 10.591 3.00795 4.22568 26.49 1482.29 1020.401 38.85 38.83 10.592 3.00725 4.22463 26.48 1482.29 1020.396 39.15 39.13 10.592 3.00835 4.22621 26.49 1482.30 1020.406 39.45 39.43 10.591 3.00933 4.22767 26.50 1482.32 1020.415 39.75 39.73 10.591 3.00861 4.22670 26.50 1482.31 1020.411 40.05 40.03 10.592 3.00990 4.22834 26.51 1482.34 1020.421 40.35 40.33 10.592 3.01042 4.22905 26.51 1482.35 1020.426 40.69 40.67 10.593 3.01259 4.23196 26.53 1482.38 1020.443