*2026/01/16 10:37:48.22 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/02/19 21:47:25.000 END TIME : UTC 2025/02/19 21:47:43.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 91 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 27.05 2 Depth metres 0.15 26.92 3 Temperature 'deg C (ITS90)' 9.01 9.853 4 Conductivity S/m 3.12208 3.47093 5 Conductance:Specific S/m 4.58956 4.9915 6 Salinity PSS-78 28.85 31.75 7 Speed:Sound m/s 1478.72 1485.7 8 Density kg/m^3 1022.31 1024.574 $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 : 55 LATITUDE : 49 39.81330 N ! (deg min) LONGITUDE : 126 28.67570 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250219_214725 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:25 91 91 MERGEHDR 1.3 2026/01/16 10:35:39 91 91 HDREDIT2 3.2 2026/01/16 10:36:10 ? ? REMOVECH 8.2 2026/01/16 10:36:37 91 91 CALIB 12.1 2026/01/16 10:37:11 91 91 CLEAN 5.3 2026/01/16 10:37:48 91 91 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:10 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 10:36:37 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:11 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 9.026 3.12642 4.59410 28.88 1478.80 1022.331 0.45 0.45 9.018 3.12297 4.59023 28.86 1478.74 1022.312 0.75 0.75 9.013 3.12208 4.58956 28.85 1478.72 1022.310 1.05 1.05 9.010 3.12533 4.59473 28.89 1478.76 1022.339 1.35 1.35 9.030 3.13658 4.60860 28.99 1478.95 1022.415 1.65 1.65 9.083 3.19309 4.68422 29.52 1479.81 1022.825 1.95 1.94 9.113 3.24633 4.75821 30.04 1480.57 1023.229 2.25 2.24 9.116 3.25369 4.76859 30.11 1480.67 1023.286 2.55 2.54 9.133 3.28940 4.81851 30.46 1481.17 1023.560 2.85 2.84 9.164 3.31967 4.85844 30.75 1481.64 1023.778 3.15 3.14 9.196 3.32766 4.86557 30.80 1481.83 1023.817 3.45 3.44 9.218 3.32998 4.86579 30.81 1481.92 1023.819 3.75 3.74 9.234 3.33143 4.86567 30.81 1481.98 1023.818 4.05 4.04 9.244 3.33218 4.86540 30.81 1482.02 1023.818 4.35 4.33 9.251 3.33274 4.86523 30.81 1482.05 1023.818 4.65 4.63 9.256 3.33340 4.86545 30.81 1482.08 1023.820 4.95 4.93 9.259 3.33380 4.86562 30.81 1482.10 1023.822 5.25 5.23 9.261 3.33484 4.86682 30.82 1482.12 1023.830 5.55 5.53 9.264 3.33488 4.86650 30.82 1482.13 1023.829 5.85 5.83 9.267 3.33587 4.86741 30.82 1482.16 1023.835 6.15 6.13 9.271 3.33764 4.86948 30.84 1482.20 1023.848 6.45 6.42 9.275 3.33981 4.87201 30.86 1482.24 1023.863 6.75 6.72 9.277 3.34209 4.87505 30.88 1482.28 1023.880 7.05 7.02 9.280 3.34370 4.87709 30.89 1482.31 1023.893 7.35 7.32 9.281 3.34622 4.88055 30.92 1482.35 1023.913 7.65 7.62 9.283 3.34853 4.88360 30.94 1482.39 1023.931 7.95 7.92 9.287 3.35324 4.88992 30.98 1482.46 1023.967 8.25 8.22 9.293 3.35585 4.89285 31.00 1482.52 1023.984 8.55 8.52 9.296 3.35748 4.89482 31.02 1482.55 1023.996 8.85 8.81 9.297 3.35817 4.89570 31.02 1482.57 1024.002 9.15 9.11 9.299 3.35865 4.89609 31.03 1482.58 1024.005 9.45 9.41 9.301 3.35922 4.89669 31.03 1482.60 1024.009 9.75 9.71 9.302 3.35931 4.89668 31.03 1482.61 1024.011 10.05 10.01 9.302 3.35952 4.89690 31.03 1482.62 1024.013 10.35 10.31 9.305 3.35973 4.89685 31.03 1482.63 1024.014 10.65 10.61 9.308 3.36144 4.89892 31.05 1482.66 1024.026 10.95 10.90 9.311 3.36478 4.90332 31.08 1482.72 1024.052 11.25 11.20 9.314 3.36727 4.90649 31.10 1482.76 1024.070 11.55 11.50 9.317 3.36868 4.90812 31.11 1482.79 1024.080 11.85 11.80 9.321 3.37095 4.91089 31.13 1482.84 1024.097 12.15 12.10 9.326 3.37268 4.91269 31.15 1482.88 1024.107 12.45 12.40 9.332 3.37421 4.91408 31.16 1482.92 1024.116 12.75 12.70 9.334 3.37635 4.91685 31.18 1482.95 1024.132 13.05 12.99 9.337 3.37723 4.91778 31.18 1482.98 1024.139 13.35 13.29 9.339 3.37799 4.91856 31.19 1483.00 1024.144 13.65 13.59 9.344 3.38030 4.92129 31.21 1483.04 1024.160 13.95 13.89 9.350 3.38204 4.92295 31.22 1483.08 1024.170 14.25 14.19 9.354 3.38625 4.92852 31.26 1483.15 1024.202 14.55 14.49 9.357 3.38650 4.92846 31.26 1483.17 1024.203 14.85 14.79 9.356 3.38635 4.92833 31.26 1483.17 1024.203 15.15 15.08 9.354 3.38614 4.92833 31.26 1483.17 1024.205 15.45 15.38 9.353 3.38638 4.92878 31.26 1483.17 1024.208 15.75 15.68 9.353 3.38638 4.92887 31.26 1483.17 1024.210 16.05 15.98 9.354 3.38585 4.92790 31.26 1483.18 1024.206 16.35 16.28 9.360 3.38649 4.92795 31.26 1483.21 1024.207 16.65 16.58 9.382 3.38885 4.92826 31.26 1483.30 1024.209 16.95 16.88 9.398 3.39813 4.93944 31.34 1483.46 1024.271 17.25 17.17 9.422 3.40204 4.94170 31.36 1483.58 1024.284 17.55 17.47 9.437 3.40243 4.94008 31.35 1483.62 1024.275 17.85 17.77 9.444 3.40283 4.93962 31.35 1483.65 1024.273 18.15 18.07 9.446 3.40323 4.93997 31.35 1483.67 1024.276 18.45 18.37 9.446 3.40313 4.93980 31.35 1483.67 1024.277 18.75 18.67 9.446 3.40349 4.94039 31.35 1483.68 1024.281 19.05 18.97 9.449 3.40345 4.93988 31.35 1483.69 1024.280 19.35 19.26 9.454 3.40320 4.93875 31.34 1483.71 1024.274 19.65 19.56 9.460 3.40421 4.93933 31.35 1483.74 1024.279 19.95 19.86 9.473 3.40925 4.94479 31.39 1483.84 1024.309 20.25 20.16 9.507 3.41739 4.95174 31.44 1484.04 1024.347 20.55 20.46 9.525 3.41870 4.95099 31.44 1484.11 1024.343 20.85 20.76 9.532 3.41935 4.95105 31.44 1484.13 1024.344 21.15 21.06 9.536 3.42031 4.95185 31.45 1484.16 1024.350 21.45 21.35 9.539 3.42044 4.95157 31.44 1484.18 1024.349 21.75 21.65 9.543 3.42053 4.95116 31.44 1484.19 1024.348 22.05 21.95 9.550 3.42262 4.95309 31.46 1484.24 1024.359 22.35 22.25 9.560 3.42381 4.95341 31.46 1484.29 1024.362 22.65 22.55 9.572 3.42740 4.95684 31.49 1484.37 1024.381 22.95 22.85 9.585 3.43108 4.96035 31.51 1484.45 1024.401 23.25 23.15 9.599 3.43303 4.96122 31.52 1484.52 1024.407 23.55 23.44 9.613 3.43307 4.95920 31.51 1484.56 1024.396 23.85 23.74 9.628 3.43465 4.95929 31.51 1484.62 1024.397 24.15 24.04 9.647 3.43812 4.96161 31.53 1484.72 1024.410 24.45 24.34 9.652 3.44081 4.96482 31.55 1484.77 1024.429 24.75 24.64 9.654 3.44949 4.97708 31.64 1484.89 1024.497 25.05 24.94 9.715 3.46564 4.99150 31.75 1485.25 1024.574 25.35 25.24 9.799 3.46836 4.98342 31.70 1485.51 1024.526 25.65 25.53 9.827 3.46838 4.97950 31.68 1485.58 1024.504 25.95 25.83 9.837 3.46875 4.97853 31.67 1485.62 1024.500 26.25 26.13 9.844 3.46891 4.97777 31.67 1485.64 1024.496 26.55 26.43 9.846 3.46947 4.97822 31.67 1485.66 1024.500 26.85 26.73 9.850 3.46998 4.97848 31.67 1485.68 1024.502 27.05 26.92 9.853 3.47093 4.97938 31.68 1485.70 1024.508