*2026/01/16 10:37:59.72 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/23 22:18:06.000 END TIME : UTC 2025/07/23 22:18:15.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 48 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 14.18 2 Depth metres 0.15 14.11 3 Temperature 'deg C (ITS90)' 10.122 13.993 4 Conductivity S/m 3.56079 3.88687 5 Conductance:Specific S/m 4.93848 5.07855 6 Salinity PSS-78 31.74 32.43 7 Speed:Sound m/s 1487.28 1500.12 8 Density kg/m^3 1023.876 1024.982 $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 : 245 LATITUDE : 49 36.07840 N ! (deg min) LONGITUDE : 126 48.09350 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250723_221806 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:35 48 48 MERGEHDR 1.3 2026/01/16 10:35:49 48 48 HDREDIT2 3.2 2026/01/16 10:36:20 ? ? REMOVECH 8.2 2026/01/16 10:36:52 48 48 CALIB 12.1 2026/01/16 10:37:23 48 48 CLEAN 5.3 2026/01/16 10:37:59 48 48 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:20 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 10:36:52 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:23 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 13.993 3.88687 4.98406 32.16 1500.12 1023.996 0.45 0.45 13.827 3.85014 4.95808 31.96 1499.35 1023.876 0.75 0.75 13.500 3.83395 4.97913 32.08 1498.42 1024.039 1.05 1.05 13.344 3.83529 5.00114 32.23 1498.07 1024.182 1.35 1.34 13.198 3.81039 4.98766 32.12 1497.46 1024.128 1.65 1.64 13.064 3.78105 4.96670 31.95 1496.83 1024.030 1.95 1.94 13.017 3.77123 4.95995 31.90 1496.61 1023.999 2.25 2.24 12.930 3.74637 4.93848 31.74 1496.14 1023.893 2.55 2.54 12.726 3.73935 4.95599 31.85 1495.57 1024.015 2.85 2.84 12.636 3.73891 4.96724 31.92 1495.36 1024.089 3.15 3.14 12.533 3.73718 4.97851 31.99 1495.10 1024.165 3.45 3.43 12.361 3.73174 4.99415 32.08 1494.63 1024.272 3.75 3.73 12.193 3.71767 4.99775 32.09 1494.08 1024.312 4.05 4.03 12.062 3.70092 4.99283 32.04 1493.57 1024.300 4.35 4.33 11.995 3.69274 4.99092 32.02 1493.32 1024.298 4.65 4.63 11.909 3.68723 4.99501 32.04 1493.05 1024.331 4.95 4.93 11.726 3.67428 5.00232 32.07 1492.46 1024.391 5.25 5.23 11.612 3.66965 5.01157 32.13 1492.14 1024.454 5.55 5.52 11.506 3.65969 5.01252 32.12 1491.77 1024.471 5.85 5.82 11.428 3.65229 5.01298 32.12 1491.50 1024.482 6.15 6.12 11.352 3.65138 5.02224 32.17 1491.30 1024.542 6.45 6.42 11.330 3.64946 5.02272 32.18 1491.23 1024.548 6.75 6.72 11.304 3.64853 5.02492 32.19 1491.16 1024.564 7.05 7.02 11.263 3.64665 5.02807 32.21 1491.04 1024.586 7.35 7.31 11.207 3.64436 5.03274 32.23 1490.88 1024.618 7.65 7.61 11.154 3.63939 5.03311 32.23 1490.70 1024.626 7.95 7.91 11.108 3.63356 5.03152 32.21 1490.52 1024.623 8.25 8.21 11.080 3.63428 5.03643 32.24 1490.47 1024.653 8.55 8.51 11.050 3.63305 5.03888 32.26 1490.38 1024.671 8.85 8.81 11.020 3.62968 5.03848 32.25 1490.27 1024.672 9.15 9.11 10.969 3.62608 5.04055 32.26 1490.11 1024.689 9.45 9.40 10.907 3.62184 5.04339 32.27 1489.91 1024.712 9.75 9.70 10.815 3.61745 5.05024 32.31 1489.63 1024.758 10.05 10.00 10.731 3.60761 5.04831 32.29 1489.31 1024.755 10.35 10.30 10.665 3.60145 5.04905 32.28 1489.08 1024.766 10.65 10.60 10.572 3.59501 5.05318 32.30 1488.77 1024.797 10.95 10.90 10.481 3.58586 5.05327 32.29 1488.44 1024.806 11.25 11.19 10.407 3.58375 5.06076 32.33 1488.24 1024.854 11.55 11.49 10.349 3.57940 5.06296 32.34 1488.04 1024.871 11.85 11.79 10.295 3.57042 5.05790 32.30 1487.80 1024.848 12.15 12.09 10.248 3.56455 5.05643 32.28 1487.62 1024.845 12.45 12.39 10.212 3.56379 5.06051 32.31 1487.52 1024.871 12.75 12.69 10.179 3.56229 5.06314 32.32 1487.43 1024.889 13.05 12.98 10.150 3.56163 5.06628 32.34 1487.35 1024.910 13.35 13.28 10.135 3.56216 5.06925 32.36 1487.32 1024.928 13.65 13.58 10.122 3.56079 5.06920 32.36 1487.28 1024.930 13.95 13.88 10.146 3.56978 5.07855 32.43 1487.45 1024.982 14.18 14.11 10.203 3.57284 5.07466 32.41 1487.64 1024.957