*2026/01/16 10:37:55.53 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/06/23 21:47:07.000 END TIME : UTC 2025/06/23 21:47:20.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 68 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.36 2 Depth metres 0.15 20.32 3 Temperature 'deg C (ITS90)' 12.875 13.569 4 Conductivity S/m 3.28624 3.37604 5 Conductance:Specific S/m 4.26056 4.45629 6 Salinity PSS-78 26.99 28.31 7 Speed:Sound m/s 1492.17 1492.72 8 Density kg/m^3 1020.095 1021.331 $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 : 174 LATITUDE : 49 6.86740 N ! (deg min) LONGITUDE : 125 47.27160 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250623_214707 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:31 68 68 MERGEHDR 1.3 2026/01/16 10:35:45 68 68 HDREDIT2 3.2 2026/01/16 10:36:16 ? ? REMOVECH 8.2 2026/01/16 10:36:44 68 68 CALIB 12.1 2026/01/16 10:37:19 68 68 CLEAN 5.3 2026/01/16 10:37:55 68 68 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:16 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 10:36:44 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:19 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 13.562 3.28758 4.26272 27.01 1492.65 1020.106 0.45 0.45 13.566 3.28624 4.26056 26.99 1492.65 1020.095 0.75 0.75 13.569 3.28989 4.26490 27.02 1492.70 1020.119 1.05 1.05 13.547 3.29450 4.27331 27.08 1492.70 1020.169 1.35 1.35 13.464 3.29938 4.28886 27.18 1492.54 1020.265 1.65 1.65 13.454 3.30682 4.29976 27.26 1492.60 1020.327 1.95 1.95 13.444 3.31109 4.30637 27.30 1492.63 1020.365 2.25 2.25 13.418 3.32198 4.32344 27.42 1492.68 1020.463 2.55 2.55 13.379 3.33196 4.34087 27.54 1492.70 1020.564 2.85 2.85 13.339 3.33803 4.35329 27.63 1492.67 1020.637 3.15 3.15 13.316 3.34697 4.36759 27.72 1492.71 1020.719 3.45 3.45 13.286 3.35465 4.38099 27.82 1492.72 1020.797 3.75 3.75 13.258 3.35649 4.38667 27.85 1492.68 1020.833 4.05 4.05 13.239 3.35574 4.38784 27.86 1492.63 1020.843 4.35 4.35 13.233 3.35644 4.38947 27.87 1492.62 1020.854 4.65 4.64 13.237 3.35613 4.38855 27.86 1492.64 1020.850 4.95 4.94 13.227 3.35482 4.38801 27.86 1492.60 1020.849 5.25 5.24 13.219 3.35589 4.39037 27.88 1492.60 1020.865 5.55 5.54 13.213 3.35522 4.39011 27.87 1492.58 1020.865 5.85 5.84 13.212 3.35597 4.39125 27.88 1492.59 1020.873 6.15 6.14 13.204 3.35560 4.39166 27.88 1492.57 1020.877 6.45 6.44 13.199 3.35620 4.39300 27.89 1492.57 1020.887 6.75 6.74 13.195 3.35612 4.39337 27.89 1492.56 1020.890 7.05 7.04 13.192 3.35581 4.39340 27.89 1492.56 1020.892 7.35 7.34 13.185 3.35737 4.39616 27.91 1492.56 1020.909 7.65 7.64 13.182 3.35826 4.39775 27.92 1492.57 1020.920 7.95 7.94 13.182 3.35752 4.39673 27.92 1492.56 1020.915 8.25 8.24 13.183 3.35719 4.39619 27.91 1492.57 1020.914 8.55 8.54 13.183 3.35750 4.39658 27.92 1492.58 1020.917 8.85 8.84 13.187 3.35731 4.39587 27.91 1492.59 1020.914 9.15 9.14 13.190 3.35840 4.39692 27.92 1492.61 1020.920 9.45 9.44 13.192 3.35700 4.39492 27.90 1492.61 1020.911 9.75 9.74 13.190 3.35814 4.39661 27.92 1492.62 1020.921 10.05 10.04 13.193 3.35959 4.39815 27.93 1492.65 1020.931 10.35 10.34 13.194 3.36164 4.40076 27.95 1492.68 1020.946 10.65 10.64 13.195 3.36121 4.40012 27.94 1492.68 1020.944 10.95 10.94 13.196 3.36064 4.39920 27.93 1492.68 1020.940 11.25 11.24 13.196 3.36115 4.39984 27.94 1492.69 1020.944 11.55 11.53 13.190 3.36216 4.40190 27.95 1492.69 1020.958 11.85 11.83 13.173 3.36354 4.40563 27.98 1492.67 1020.981 12.15 12.13 13.146 3.36533 4.41112 28.01 1492.63 1021.016 12.45 12.43 13.126 3.36677 4.41531 28.04 1492.60 1021.043 12.75 12.73 13.114 3.36740 4.41757 28.06 1492.58 1021.058 13.05 13.03 13.102 3.36725 4.41870 28.06 1492.55 1021.067 13.35 13.33 13.084 3.36768 4.42138 28.08 1492.51 1021.085 13.65 13.63 13.056 3.36788 4.42489 28.10 1492.45 1021.109 13.95 13.93 13.018 3.36983 4.43184 28.15 1492.38 1021.153 14.25 14.23 12.985 3.37018 4.43624 28.18 1492.31 1021.182 14.55 14.53 12.969 3.37091 4.43904 28.20 1492.28 1021.201 14.85 14.83 12.951 3.37176 4.44223 28.22 1492.25 1021.221 15.15 15.13 12.940 3.37143 4.44309 28.22 1492.22 1021.229 15.45 15.43 12.935 3.37219 4.44472 28.23 1492.22 1021.240 15.75 15.73 12.924 3.37220 4.44599 28.24 1492.20 1021.249 16.05 16.03 12.918 3.37313 4.44790 28.25 1492.20 1021.261 16.35 16.33 12.912 3.37418 4.45007 28.27 1492.20 1021.275 16.65 16.63 12.909 3.37510 4.45156 28.28 1492.21 1021.285 16.95 16.93 12.903 3.37566 4.45298 28.29 1492.20 1021.295 17.25 17.22 12.901 3.37536 4.45285 28.29 1492.20 1021.296 17.55 17.52 12.896 3.37531 4.45337 28.29 1492.19 1021.300 17.85 17.82 12.892 3.37513 4.45357 28.29 1492.19 1021.303 18.15 18.12 12.884 3.37550 4.45504 28.30 1492.17 1021.313 18.45 18.42 12.886 3.37604 4.45554 28.30 1492.19 1021.317 18.75 18.72 12.886 3.37557 4.45495 28.30 1492.19 1021.315 19.05 19.02 12.883 3.37574 4.45548 28.30 1492.19 1021.320 19.35 19.32 12.881 3.37545 4.45538 28.30 1492.18 1021.321 19.65 19.62 12.880 3.37514 4.45501 28.30 1492.18 1021.320 19.95 19.92 12.877 3.37517 4.45546 28.30 1492.18 1021.324 20.36 20.32 12.875 3.37565 4.45629 28.31 1492.19 1021.331