*2026/01/16 10:37:45.22 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/01/23 17:09:03.000 END TIME : UTC 2025/01/23 17:09:18.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 77 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 23.02 2 Depth metres 0.15 22.92 3 Temperature 'deg C (ITS90)' 9.124 9.59 4 Conductivity S/m 3.2449 3.38722 5 Conductance:Specific S/m 4.74909 4.9111 6 Salinity PSS-78 29.98 31.1 7 Speed:Sound m/s 1480.65 1483.67 8 Density kg/m^3 1023.169 1024.154 $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 : 26 LATITUDE : 48 49.07670 N ! (deg min) LONGITUDE : 125 10.86910 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250123_170903 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:23 77 77 MERGEHDR 1.3 2026/01/16 10:35:38 77 77 HDREDIT2 3.2 2026/01/16 10:36:08 ? ? REMOVECH 8.2 2026/01/16 10:36:37 77 77 CALIB 12.1 2026/01/16 10:37:10 77 77 CLEAN 5.3 2026/01/16 10:37:45 77 77 $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 10:36:37 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:10 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 9.163 3.24490 4.74909 29.98 1480.65 1023.169 0.45 0.45 9.186 3.24976 4.75312 30.01 1480.78 1023.191 0.75 0.75 9.199 3.27768 4.79202 30.29 1481.17 1023.404 1.05 1.05 9.191 3.28072 4.79761 30.33 1481.19 1023.436 1.35 1.34 9.182 3.28418 4.80397 30.37 1481.21 1023.473 1.65 1.64 9.172 3.28897 4.81239 30.43 1481.25 1023.521 1.95 1.94 9.163 3.29451 4.82180 30.49 1481.30 1023.574 2.25 2.24 9.159 3.29931 4.82936 30.54 1481.36 1023.617 2.55 2.54 9.157 3.30198 4.83350 30.57 1481.39 1023.641 2.85 2.84 9.155 3.30417 4.83707 30.60 1481.42 1023.662 3.15 3.14 9.148 3.30834 4.84407 30.64 1481.46 1023.702 3.45 3.44 9.149 3.32220 4.86423 30.79 1481.64 1023.813 3.75 3.73 9.169 3.32335 4.86308 30.78 1481.71 1023.807 4.05 4.03 9.176 3.32251 4.86095 30.77 1481.72 1023.797 4.35 4.33 9.172 3.32272 4.86169 30.77 1481.72 1023.802 4.65 4.63 9.178 3.32280 4.86105 30.77 1481.74 1023.800 4.95 4.93 9.203 3.32568 4.86164 30.77 1481.85 1023.803 5.25 5.23 9.226 3.33298 4.86907 30.83 1482.01 1023.844 5.55 5.53 9.251 3.33930 4.87478 30.87 1482.16 1023.875 5.85 5.83 9.276 3.34091 4.87358 30.87 1482.25 1023.869 6.15 6.12 9.299 3.34265 4.87283 30.86 1482.33 1023.865 6.45 6.42 9.333 3.34435 4.87039 30.85 1482.45 1023.851 6.75 6.72 9.363 3.34886 4.87270 30.87 1482.59 1023.863 7.05 7.02 9.370 3.34912 4.87222 30.87 1482.62 1023.862 7.35 7.32 9.383 3.34997 4.87154 30.87 1482.67 1023.858 7.65 7.62 9.392 3.35097 4.87174 30.87 1482.71 1023.860 7.95 7.92 9.400 3.35257 4.87290 30.88 1482.75 1023.867 8.25 8.22 9.417 3.35370 4.87209 30.87 1482.82 1023.863 8.55 8.51 9.444 3.35651 4.87243 30.88 1482.93 1023.865 8.85 8.81 9.461 3.36071 4.87610 30.91 1483.03 1023.886 9.15 9.11 9.479 3.36341 4.87748 30.92 1483.11 1023.893 9.45 9.41 9.500 3.36379 4.87510 30.91 1483.18 1023.881 9.75 9.71 9.515 3.36762 4.87846 30.93 1483.27 1023.899 10.05 10.01 9.546 3.37147 4.87964 30.94 1483.41 1023.905 10.35 10.31 9.573 3.37712 4.88406 30.98 1483.55 1023.929 10.65 10.60 9.590 3.38242 4.88927 31.02 1483.67 1023.958 10.95 10.90 9.579 3.38373 4.89272 31.04 1483.66 1023.979 11.25 11.20 9.566 3.38722 4.89969 31.09 1483.67 1024.020 11.55 11.50 9.566 3.38398 4.89500 31.05 1483.64 1023.995 11.85 11.80 9.537 3.37760 4.88985 31.01 1483.49 1023.970 12.15 12.10 9.492 3.37602 4.89395 31.04 1483.35 1023.996 12.45 12.40 9.458 3.37395 4.89570 31.04 1483.24 1024.009 12.75 12.70 9.454 3.37265 4.89441 31.03 1483.22 1024.003 13.05 12.99 9.440 3.37141 4.89456 31.03 1483.17 1024.006 13.35 13.29 9.415 3.36977 4.89584 31.04 1483.09 1024.016 13.65 13.59 9.398 3.37088 4.89988 31.07 1483.07 1024.040 13.95 13.89 9.381 3.37033 4.90149 31.07 1483.02 1024.051 14.25 14.19 9.375 3.36976 4.90151 31.07 1483.00 1024.052 14.55 14.49 9.347 3.36957 4.90519 31.10 1482.93 1024.075 14.85 14.79 9.316 3.36569 4.90393 31.08 1482.81 1024.071 15.15 15.08 9.292 3.36087 4.90041 31.05 1482.69 1024.054 15.45 15.38 9.258 3.35391 4.89509 31.01 1482.51 1024.028 15.75 15.68 9.229 3.34925 4.89245 30.99 1482.38 1024.016 16.05 15.98 9.201 3.34965 4.89705 31.02 1482.32 1024.044 16.35 16.28 9.186 3.35200 4.90261 31.05 1482.31 1024.077 16.65 16.58 9.189 3.35302 4.90367 31.06 1482.34 1024.084 16.95 16.88 9.195 3.35439 4.90483 31.07 1482.38 1024.091 17.25 17.18 9.193 3.35459 4.90541 31.07 1482.38 1024.096 17.55 17.47 9.180 3.35341 4.90552 31.07 1482.34 1024.098 17.85 17.77 9.178 3.35327 4.90562 31.07 1482.33 1024.100 18.15 18.07 9.178 3.35328 4.90569 31.07 1482.34 1024.102 18.45 18.37 9.173 3.35360 4.90683 31.08 1482.33 1024.109 18.75 18.67 9.175 3.35331 4.90608 31.08 1482.34 1024.106 19.05 18.97 9.173 3.35371 4.90691 31.08 1482.35 1024.112 19.35 19.27 9.174 3.35381 4.90692 31.08 1482.35 1024.114 19.65 19.56 9.173 3.35378 4.90703 31.08 1482.36 1024.116 19.95 19.86 9.173 3.35383 4.90713 31.08 1482.36 1024.117 20.25 20.16 9.173 3.35371 4.90695 31.08 1482.36 1024.118 20.55 20.46 9.172 3.35419 4.90774 31.09 1482.37 1024.123 20.85 20.76 9.170 3.35424 4.90822 31.09 1482.37 1024.127 21.15 21.06 9.169 3.35391 4.90782 31.09 1482.37 1024.126 21.45 21.36 9.169 3.35555 4.91025 31.10 1482.40 1024.141 21.75 21.65 9.176 3.35485 4.90815 31.09 1482.41 1024.130 22.05 21.95 9.181 3.35568 4.90874 31.09 1482.44 1024.135 22.35 22.25 9.182 3.35514 4.90771 31.09 1482.44 1024.130 22.65 22.55 9.172 3.35413 4.90767 31.09 1482.41 1024.132 23.02 22.92 9.124 3.35175 4.91110 31.10 1482.25 1024.154