*2026/01/16 10:37:53.76 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/08 19:58:40.000 END TIME : UTC 2025/05/08 19:58:53.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 66 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 19.71 2 Depth metres 0.15 19.63 3 Temperature 'deg C (ITS90)' 9.238 14.263 4 Conductivity S/m 3.39436 3.46107 5 Conductance:Specific S/m 4.39362 4.98075 6 Salinity PSS-78 27.98 31.61 7 Speed:Sound m/s 1483.17 1496.11 8 Density kg/m^3 1020.715 1024.518 $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 : 139 LATITUDE : 48 59.53570 N ! (deg min) LONGITUDE : 125 19.87690 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250508_195840 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:29 66 66 MERGEHDR 1.3 2026/01/16 10:35:44 66 66 HDREDIT2 3.2 2026/01/16 10:36:15 ? ? REMOVECH 8.2 2026/01/16 10:36:41 66 66 CALIB 12.1 2026/01/16 10:37:17 66 66 CLEAN 5.3 2026/01/16 10:37:53 66 66 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:15 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 10:36:41 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:17 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 14.263 3.45014 4.39362 27.98 1496.11 1020.715 0.45 0.45 14.195 3.44791 4.39835 28.00 1495.93 1020.752 0.75 0.75 14.017 3.44193 4.41085 28.08 1495.43 1020.847 1.05 1.05 13.749 3.45036 4.45220 28.35 1494.86 1021.111 1.35 1.35 13.381 3.45185 4.49679 28.64 1493.98 1021.405 1.65 1.65 12.878 3.46080 4.56840 29.10 1492.83 1021.862 1.95 1.95 12.524 3.46107 4.61184 29.38 1491.96 1022.143 2.25 2.25 12.292 3.45234 4.62878 29.48 1491.28 1022.264 2.55 2.54 11.856 3.44354 4.67158 29.74 1490.09 1022.547 2.85 2.84 11.211 3.43101 4.73748 30.14 1488.31 1022.972 3.15 3.14 10.772 3.42309 4.78462 30.43 1487.10 1023.270 3.45 3.44 10.636 3.41802 4.79580 30.49 1486.70 1023.344 3.75 3.74 10.514 3.41376 4.80619 30.55 1486.34 1023.411 4.05 4.04 10.300 3.41017 4.83022 30.69 1485.75 1023.561 4.35 4.34 10.145 3.40800 4.84853 30.80 1485.32 1023.673 4.65 4.64 10.078 3.40674 4.85598 30.85 1485.14 1023.720 4.95 4.94 10.025 3.40685 4.86348 30.89 1485.01 1023.766 5.25 5.23 9.979 3.40641 4.86922 30.93 1484.89 1023.802 5.55 5.53 9.929 3.40684 4.87677 30.97 1484.77 1023.848 5.85 5.83 9.875 3.40631 4.88360 31.02 1484.63 1023.890 6.15 6.13 9.808 3.40608 4.89262 31.07 1484.46 1023.945 6.45 6.43 9.743 3.40603 4.90181 31.13 1484.29 1024.001 6.75 6.73 9.687 3.40396 4.90672 31.15 1484.12 1024.032 7.05 7.03 9.650 3.40202 4.90918 31.17 1484.01 1024.049 7.35 7.32 9.621 3.40168 4.91280 31.19 1483.93 1024.072 7.65 7.62 9.591 3.40123 4.91634 31.21 1483.85 1024.094 7.95 7.92 9.563 3.39991 4.91849 31.22 1483.77 1024.109 8.25 8.22 9.536 3.39970 4.92201 31.24 1483.70 1024.131 8.55 8.52 9.509 3.39931 4.92523 31.26 1483.63 1024.152 8.85 8.82 9.481 3.39834 4.92788 31.28 1483.55 1024.169 9.15 9.12 9.455 3.39764 4.93048 31.29 1483.48 1024.186 9.45 9.42 9.435 3.39679 4.93223 31.30 1483.42 1024.198 9.75 9.71 9.418 3.39558 4.93290 31.30 1483.36 1024.204 10.05 10.01 9.399 3.39492 4.93466 31.31 1483.31 1024.216 10.35 10.31 9.381 3.39501 4.93727 31.33 1483.27 1024.232 10.65 10.61 9.367 3.39467 4.93891 31.34 1483.23 1024.243 10.95 10.91 9.353 3.39436 4.94046 31.35 1483.20 1024.254 11.25 11.21 9.343 3.39452 4.94202 31.36 1483.18 1024.264 11.55 11.51 9.337 3.39576 4.94479 31.37 1483.18 1024.281 11.85 11.80 9.332 3.39745 4.94799 31.40 1483.20 1024.300 12.15 12.10 9.326 3.39803 4.94965 31.41 1483.19 1024.311 12.45 12.40 9.319 3.39824 4.95103 31.41 1483.18 1024.320 12.75 12.70 9.313 3.39835 4.95196 31.42 1483.17 1024.326 13.05 13.00 9.310 3.39899 4.95338 31.43 1483.18 1024.336 13.35 13.30 9.307 3.39958 4.95459 31.44 1483.18 1024.344 13.65 13.60 9.305 3.40103 4.95704 31.45 1483.20 1024.359 13.95 13.89 9.302 3.40193 4.95875 31.47 1483.21 1024.369 14.25 14.19 9.298 3.40190 4.95930 31.47 1483.20 1024.374 14.55 14.49 9.298 3.40183 4.95930 31.47 1483.21 1024.375 14.85 14.79 9.296 3.40227 4.96009 31.47 1483.21 1024.381 15.15 15.09 9.295 3.40335 4.96181 31.49 1483.23 1024.392 15.45 15.39 9.294 3.40360 4.96245 31.49 1483.23 1024.396 15.75 15.68 9.295 3.40305 4.96144 31.48 1483.23 1024.392 16.05 15.98 9.292 3.40374 4.96287 31.49 1483.24 1024.401 16.35 16.28 9.289 3.40352 4.96297 31.49 1483.23 1024.403 16.65 16.58 9.289 3.40356 4.96300 31.49 1483.24 1024.405 16.95 16.88 9.289 3.40380 4.96343 31.50 1483.25 1024.408 17.25 17.18 9.285 3.40493 4.96567 31.51 1483.25 1024.422 17.55 17.48 9.283 3.40392 4.96448 31.50 1483.24 1024.417 17.85 17.77 9.286 3.40571 4.96667 31.52 1483.28 1024.430 18.15 18.07 9.294 3.40681 4.96710 31.52 1483.32 1024.433 18.45 18.37 9.308 3.40902 4.96821 31.53 1483.39 1024.440 18.75 18.67 9.293 3.41016 4.97214 31.56 1483.36 1024.464 19.05 18.97 9.265 3.41018 4.97619 31.58 1483.30 1024.489 19.35 19.27 9.246 3.41102 4.98014 31.61 1483.26 1024.513 19.71 19.63 9.238 3.41061 4.98075 31.61 1483.24 1024.518