*2026/01/16 10:37:44.41 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/01/22 20:52:05.000 END TIME : UTC 2025/01/22 20:52:24.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 97 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 29.05 2 Depth metres 0.15 28.93 3 Temperature 'deg C (ITS90)' 8.219 10.32 4 Conductivity S/m 2.86663 3.48723 5 Conductance:Specific S/m 4.30848 4.94252 6 Salinity PSS-78 26.83 31.47 7 Speed:Sound m/s 1473.25 1487.02 8 Density kg/m^3 1020.815 1024.285 $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 : 18 LATITUDE : 48 58.92640 N ! (deg min) LONGITUDE : 124 58.52860 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250122_205205 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:23 97 97 MERGEHDR 1.3 2026/01/16 10:35:38 97 97 HDREDIT2 3.2 2026/01/16 10:36:08 ? ? REMOVECH 8.2 2026/01/16 10:36:36 97 97 CALIB 12.1 2026/01/16 10:37:09 97 97 CLEAN 5.3 2026/01/16 10:37:44 97 97 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:08 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 10:36:36 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:09 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 8.400 2.87806 4.30848 26.83 1473.91 1020.815 0.45 0.45 8.219 2.86663 4.31480 26.85 1473.25 1020.857 0.75 0.75 8.422 2.88522 4.31630 26.89 1474.08 1020.859 1.05 1.05 8.484 2.89665 4.32539 26.96 1474.40 1020.907 1.35 1.35 8.551 2.91663 4.34658 27.11 1474.85 1021.019 1.65 1.65 8.724 2.94813 4.37102 27.30 1475.75 1021.145 1.95 1.95 8.842 2.98404 4.40881 27.58 1476.53 1021.345 2.25 2.25 8.893 2.99663 4.42068 27.67 1476.84 1021.408 2.55 2.55 8.934 3.00557 4.42857 27.72 1477.07 1021.450 2.85 2.85 8.968 3.01773 4.44206 27.82 1477.32 1021.522 3.15 3.14 9.013 3.02779 4.45090 27.89 1477.58 1021.569 3.45 3.44 9.058 3.03915 4.46168 27.97 1477.85 1021.626 3.75 3.74 9.094 3.04843 4.47059 28.03 1478.07 1021.674 4.05 4.04 9.137 3.06198 4.48482 28.14 1478.37 1021.750 4.35 4.34 9.184 3.07069 4.49142 28.19 1478.61 1021.784 4.65 4.64 9.237 3.08177 4.50065 28.26 1478.90 1021.833 4.95 4.94 9.330 3.11388 4.53517 28.51 1479.56 1022.016 5.25 5.24 9.408 3.16378 4.59747 28.95 1480.39 1022.351 5.55 5.54 9.570 3.20577 4.63660 29.25 1481.35 1022.556 5.85 5.84 9.784 3.27763 4.71141 29.80 1482.81 1022.952 6.15 6.14 9.917 3.31934 4.75315 30.10 1483.68 1023.173 6.45 6.44 10.017 3.37264 4.81572 30.56 1484.59 1023.511 6.75 6.73 10.097 3.39883 4.84201 30.75 1485.13 1023.651 7.05 7.03 10.174 3.41072 4.84828 30.80 1485.48 1023.681 7.35 7.33 10.223 3.42255 4.85845 30.88 1485.75 1023.735 7.65 7.63 10.261 3.43054 4.86452 30.93 1485.95 1023.767 7.95 7.93 10.286 3.43298 4.86443 30.93 1486.05 1023.766 8.25 8.23 10.303 3.43376 4.86324 30.92 1486.11 1023.759 8.55 8.53 10.313 3.43594 4.86500 30.94 1486.16 1023.770 8.85 8.83 10.316 3.43647 4.86538 30.94 1486.18 1023.773 9.15 9.12 10.316 3.44029 4.87076 30.98 1486.23 1023.804 9.45 9.42 10.315 3.44154 4.87262 30.99 1486.25 1023.815 9.75 9.72 10.314 3.44164 4.87290 30.99 1486.25 1023.818 10.05 10.02 10.310 3.44143 4.87320 30.99 1486.24 1023.821 10.35 10.32 10.297 3.44090 4.87414 31.00 1486.21 1023.829 10.65 10.62 10.298 3.44213 4.87586 31.01 1486.23 1023.839 10.95 10.92 10.309 3.44348 4.87623 31.02 1486.28 1023.842 11.25 11.21 10.314 3.44473 4.87729 31.02 1486.31 1023.849 11.55 11.51 10.317 3.44772 4.88109 31.05 1486.36 1023.871 11.85 11.81 10.320 3.44882 4.88228 31.06 1486.39 1023.878 12.15 12.11 10.319 3.44999 4.88405 31.07 1486.41 1023.889 12.45 12.41 10.316 3.45082 4.88566 31.08 1486.41 1023.900 12.75 12.71 10.312 3.45128 4.88686 31.09 1486.41 1023.908 13.05 13.01 10.310 3.45181 4.88792 31.10 1486.42 1023.915 13.35 13.31 10.303 3.45303 4.89056 31.11 1486.42 1023.931 13.65 13.60 10.297 3.45188 4.88970 31.11 1486.40 1023.928 13.95 13.90 10.292 3.45202 4.89071 31.11 1486.39 1023.935 14.25 14.20 10.287 3.45225 4.89165 31.12 1486.39 1023.942 14.55 14.50 10.286 3.45298 4.89280 31.13 1486.40 1023.950 14.85 14.80 10.282 3.45307 4.89356 31.13 1486.39 1023.956 15.15 15.10 10.277 3.45313 4.89424 31.14 1486.38 1023.961 15.45 15.40 10.274 3.45303 4.89456 31.14 1486.38 1023.964 15.75 15.69 10.272 3.45321 4.89517 31.14 1486.38 1023.969 16.05 15.99 10.271 3.45333 4.89545 31.14 1486.38 1023.972 16.35 16.29 10.270 3.45452 4.89718 31.16 1486.40 1023.983 16.65 16.59 10.263 3.45541 4.89942 31.17 1486.40 1023.997 16.95 16.89 10.265 3.45659 4.90084 31.18 1486.42 1024.006 17.25 17.19 10.268 3.45735 4.90154 31.19 1486.45 1024.010 17.55 17.49 10.267 3.45825 4.90290 31.20 1486.46 1024.019 17.85 17.79 10.269 3.45882 4.90352 31.20 1486.47 1024.024 18.15 18.08 10.271 3.46044 4.90553 31.21 1486.50 1024.036 18.45 18.38 10.275 3.46235 4.90771 31.23 1486.54 1024.049 18.75 18.68 10.276 3.46268 4.90793 31.23 1486.56 1024.051 19.05 18.98 10.277 3.46279 4.90802 31.23 1486.56 1024.053 19.35 19.28 10.281 3.46312 4.90796 31.23 1486.58 1024.054 19.65 19.58 10.280 3.46295 4.90783 31.23 1486.58 1024.054 19.95 19.88 10.280 3.46294 4.90773 31.23 1486.59 1024.055 20.25 20.17 10.280 3.46359 4.90865 31.24 1486.60 1024.061 20.55 20.47 10.282 3.46375 4.90859 31.24 1486.61 1024.062 20.85 20.77 10.282 3.46564 4.91132 31.26 1486.64 1024.078 21.15 21.07 10.283 3.46661 4.91251 31.26 1486.66 1024.086 21.45 21.37 10.283 3.46720 4.91342 31.27 1486.67 1024.093 21.75 21.67 10.284 3.46781 4.91413 31.28 1486.69 1024.098 22.05 21.97 10.285 3.46920 4.91600 31.29 1486.71 1024.109 22.35 22.26 10.286 3.47137 4.91887 31.31 1486.74 1024.126 22.65 22.56 10.287 3.47266 4.92064 31.32 1486.77 1024.137 22.95 22.86 10.287 3.47409 4.92265 31.34 1486.79 1024.149 23.25 23.16 10.287 3.47481 4.92360 31.34 1486.80 1024.156 23.55 23.46 10.285 3.47527 4.92451 31.35 1486.81 1024.162 23.85 23.76 10.279 3.47545 4.92565 31.36 1486.80 1024.170 24.15 24.06 10.276 3.47657 4.92771 31.37 1486.81 1024.183 24.45 24.36 10.278 3.47804 4.92952 31.38 1486.84 1024.194 24.75 24.65 10.279 3.47855 4.93007 31.39 1486.85 1024.198 25.05 24.95 10.281 3.47897 4.93035 31.39 1486.87 1024.201 25.35 25.25 10.282 3.47963 4.93115 31.39 1486.88 1024.207 25.65 25.55 10.279 3.47939 4.93119 31.39 1486.88 1024.208 25.95 25.85 10.280 3.47976 4.93161 31.40 1486.89 1024.212 26.25 26.15 10.282 3.48014 4.93195 31.40 1486.90 1024.215 26.55 26.45 10.279 3.48051 4.93285 31.41 1486.90 1024.221 26.85 26.74 10.275 3.48010 4.93287 31.40 1486.89 1024.223 27.15 27.04 10.274 3.48080 4.93399 31.41 1486.90 1024.230 27.45 27.34 10.280 3.48234 4.93523 31.42 1486.94 1024.238 27.75 27.64 10.278 3.48228 4.93550 31.42 1486.94 1024.241 28.05 27.94 10.273 3.48212 4.93603 31.43 1486.93 1024.246 28.35 28.24 10.271 3.48349 4.93812 31.44 1486.95 1024.258 28.65 28.54 10.275 3.48552 4.94047 31.46 1486.99 1024.272 29.05 28.93 10.278 3.48723 4.94252 31.47 1487.02 1024.285