*2026/01/16 09:47:04.72 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/12/01 17:31:22.000 END TIME : UTC 2023/12/01 17:31:35.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 70 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.76 2 Depth metres 0.15 20.72 3 Temperature 'deg C (ITS90)' 11.045 11.299 4 Conductivity S/m 3.17483 3.35958 5 Conductance:Specific S/m 4.37316 4.6586 6 Salinity PSS-78 27.6 29.56 7 Speed:Sound m/s 1485.53 1487.37 8 Density kg/m^3 1020.968 1022.63 $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 : 2023-031 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 91 LATITUDE : 49 12.30700 N ! (deg min) LONGITUDE : 125 55.86030 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231201_173122 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:52 70 70 MERGEHDR 1.3 2026/01/15 13:41:48 70 70 HDREDIT2 3.2 2026/01/15 14:00:57 ? ? REMOVECH 8.2 2026/01/15 14:01:18 70 70 CALIB 12.1 2026/01/16 09:46:09 70 70 CLEAN 5.3 2026/01/16 09:47:04 70 70 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:57 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 2026/01/15 14:01:18 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:09 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 09:47:01 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 11.299 3.17483 4.37316 27.60 1485.53 1020.968 0.45 0.45 11.271 3.19782 4.40821 27.84 1485.72 1021.162 0.75 0.75 11.289 3.20012 4.40916 27.85 1485.80 1021.166 1.05 1.05 11.283 3.20042 4.41040 27.85 1485.79 1021.175 1.35 1.35 11.284 3.20125 4.41141 27.86 1485.81 1021.182 1.65 1.65 11.280 3.20159 4.41230 27.87 1485.81 1021.188 1.95 1.95 11.272 3.20113 4.41270 27.87 1485.79 1021.192 2.25 2.25 11.266 3.20156 4.41399 27.88 1485.78 1021.201 2.55 2.55 11.263 3.20248 4.41558 27.89 1485.79 1021.211 2.85 2.85 11.267 3.20300 4.41581 27.89 1485.81 1021.214 3.15 3.14 11.266 3.20544 4.41931 27.91 1485.84 1021.234 3.45 3.44 11.269 3.20622 4.42012 27.92 1485.86 1021.239 3.75 3.74 11.268 3.20702 4.42126 27.93 1485.87 1021.247 4.05 4.04 11.265 3.20860 4.42386 27.94 1485.89 1021.263 4.35 4.34 11.266 3.20865 4.42379 27.94 1485.90 1021.263 4.65 4.64 11.264 3.20855 4.42388 27.94 1485.89 1021.265 4.95 4.94 11.264 3.20908 4.42461 27.95 1485.91 1021.271 5.25 5.24 11.261 3.20901 4.42492 27.95 1485.90 1021.274 5.55 5.54 11.263 3.20999 4.42599 27.96 1485.92 1021.281 5.85 5.84 11.269 3.20992 4.42514 27.95 1485.94 1021.277 6.15 6.14 11.268 3.20980 4.42507 27.95 1485.94 1021.278 6.45 6.44 11.264 3.21070 4.42680 27.96 1485.95 1021.289 6.75 6.74 11.260 3.21055 4.42712 27.97 1485.94 1021.292 7.05 7.04 11.258 3.21229 4.42981 27.98 1485.96 1021.308 7.35 7.34 11.256 3.21691 4.43642 28.03 1486.01 1021.346 7.65 7.64 11.260 3.22339 4.44483 28.09 1486.10 1021.392 7.95 7.94 11.260 3.22680 4.44951 28.12 1486.15 1021.419 8.25 8.23 11.261 3.23262 4.45746 28.18 1486.22 1021.463 8.55 8.53 11.262 3.23448 4.45987 28.19 1486.25 1021.477 8.85 8.83 11.263 3.23848 4.46526 28.23 1486.31 1021.508 9.15 9.13 11.263 3.24064 4.46823 28.25 1486.34 1021.525 9.45 9.43 11.265 3.24150 4.46919 28.26 1486.35 1021.531 9.75 9.73 11.263 3.24314 4.47167 28.28 1486.37 1021.546 10.05 10.03 11.263 3.24427 4.47330 28.29 1486.39 1021.557 10.35 10.33 11.270 3.24530 4.47383 28.29 1486.43 1021.560 10.65 10.63 11.273 3.24662 4.47530 28.30 1486.45 1021.569 10.95 10.93 11.272 3.24767 4.47680 28.31 1486.47 1021.578 11.25 11.23 11.271 3.24777 4.47709 28.31 1486.47 1021.581 11.55 11.53 11.271 3.24849 4.47809 28.32 1486.48 1021.588 11.85 11.83 11.273 3.24927 4.47896 28.33 1486.50 1021.594 12.15 12.13 11.271 3.25067 4.48113 28.34 1486.52 1021.607 12.45 12.43 11.265 3.25046 4.48151 28.34 1486.51 1021.611 12.75 12.73 11.256 3.24991 4.48194 28.35 1486.48 1021.616 13.05 13.02 11.232 3.24932 4.48404 28.36 1486.42 1021.631 13.35 13.32 11.245 3.25277 4.48722 28.38 1486.49 1021.648 13.65 13.62 11.251 3.25326 4.48713 28.38 1486.52 1021.648 13.95 13.92 11.252 3.25289 4.48647 28.38 1486.53 1021.646 14.25 14.22 11.249 3.25302 4.48705 28.38 1486.52 1021.650 14.55 14.52 11.242 3.25430 4.48969 28.40 1486.52 1021.667 14.85 14.82 11.240 3.25490 4.49074 28.41 1486.53 1021.674 15.15 15.12 11.247 3.25543 4.49067 28.41 1486.56 1021.674 15.45 15.42 11.248 3.25648 4.49194 28.41 1486.58 1021.682 15.75 15.72 11.249 3.25632 4.49159 28.41 1486.59 1021.681 16.05 16.02 11.244 3.25581 4.49149 28.41 1486.57 1021.683 16.35 16.32 11.236 3.25788 4.49533 28.44 1486.58 1021.706 16.65 16.62 11.233 3.25878 4.49699 28.45 1486.59 1021.716 16.95 16.92 11.200 3.26352 4.50759 28.52 1486.56 1021.778 17.25 17.22 11.190 3.26951 4.51720 28.59 1486.61 1021.833 17.55 17.51 11.158 3.29900 4.56191 28.90 1486.87 1022.080 17.85 17.81 11.146 3.32347 4.59723 29.14 1487.13 1022.275 18.15 18.11 11.113 3.33635 4.61929 29.29 1487.20 1022.400 18.45 18.41 11.092 3.33904 4.62570 29.34 1487.18 1022.438 18.75 18.71 11.074 3.33968 4.62890 29.36 1487.15 1022.458 19.05 19.01 11.078 3.34174 4.63129 29.37 1487.19 1022.472 19.35 19.31 11.067 3.34257 4.63383 29.39 1487.17 1022.488 19.65 19.61 11.071 3.34899 4.64215 29.45 1487.26 1022.534 19.95 19.91 11.065 3.34875 4.64264 29.45 1487.25 1022.539 20.25 20.21 11.045 3.35554 4.65463 29.53 1487.28 1022.607 20.55 20.51 11.058 3.35958 4.65860 29.56 1487.37 1022.629 20.76 20.72 11.056 3.35927 4.65846 29.56 1487.36 1022.630