*2026/01/16 09:47:02.29 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/09/29 15:47:34.000 END TIME : UTC 2023/09/29 15:47:42.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 41 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 12.22 2 Depth metres 0.15 12.19 3 Temperature 'deg C (ITS90)' 12.676 13.82 4 Conductivity S/m 2.4418 3.67372 5 Conductance:Specific S/m 3.20478 4.87008 6 Salinity PSS-78 19.7 31.22 7 Speed:Sound m/s 1482.48 1495.53 8 Density kg/m^3 1014.563 1023.587 $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 : 31 LATITUDE : 49 24.13590 N ! (deg min) LONGITUDE : 126 13.58610 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230929_154734 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 41 41 MERGEHDR 1.3 2026/01/15 13:41:47 41 41 HDREDIT2 3.2 2026/01/15 14:00:54 ? ? REMOVECH 8.2 2026/01/15 14:01:17 41 41 CALIB 12.1 2026/01/16 09:46:01 41 41 CLEAN 5.3 2026/01/16 09:47:02 41 41 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:54 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 14:01:17 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:01 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 13.096 2.44180 3.20478 19.70 1482.48 1014.563 0.45 0.45 13.321 2.48658 3.24442 19.98 1483.59 1014.740 0.75 0.75 13.792 2.60185 3.35362 20.75 1486.10 1015.244 1.05 1.05 13.820 2.83660 3.65350 22.80 1488.60 1016.817 1.35 1.36 13.805 2.93521 3.78200 23.68 1489.58 1017.501 1.65 1.66 13.785 3.05289 3.93569 24.74 1490.76 1018.324 1.95 1.96 13.778 3.20168 4.12817 26.08 1492.31 1019.358 2.25 2.26 13.751 3.29607 4.25294 26.95 1493.25 1020.036 2.55 2.56 13.719 3.33731 4.30966 27.35 1493.61 1020.348 2.85 2.85 13.736 3.37895 4.36149 27.71 1494.10 1020.628 3.15 3.15 13.721 3.42718 4.42542 28.16 1494.58 1020.978 3.45 3.45 13.611 3.44904 4.46634 28.44 1494.55 1021.217 3.75 3.75 13.538 3.47209 4.50479 28.71 1494.62 1021.438 4.05 4.05 13.441 3.51856 4.57654 29.21 1494.89 1021.844 4.35 4.35 13.358 3.54298 4.61827 29.50 1494.96 1022.085 4.65 4.65 13.250 3.56677 4.66245 29.80 1494.96 1022.342 4.95 4.95 13.192 3.58463 4.69289 30.01 1495.02 1022.518 5.25 5.25 13.148 3.60495 4.72490 30.24 1495.14 1022.700 5.55 5.55 13.135 3.62722 4.75572 30.45 1495.36 1022.873 5.85 5.85 13.105 3.63555 4.77041 30.55 1495.38 1022.958 6.15 6.15 13.078 3.65012 4.79300 30.71 1495.48 1023.088 6.45 6.45 13.065 3.65662 4.80318 30.78 1495.53 1023.147 6.75 6.74 13.044 3.65999 4.81019 30.83 1495.52 1023.189 7.05 7.04 13.019 3.66387 4.81843 30.89 1495.51 1023.239 7.35 7.34 12.982 3.66534 4.82514 30.93 1495.44 1023.282 7.65 7.64 12.971 3.67018 4.83293 30.99 1495.47 1023.327 7.95 7.94 12.957 3.67095 4.83566 31.01 1495.45 1023.345 8.25 8.24 12.941 3.67170 4.83870 31.03 1495.43 1023.365 8.55 8.54 12.920 3.67177 4.84146 31.04 1495.38 1023.384 8.85 8.84 12.905 3.67235 4.84409 31.06 1495.36 1023.402 9.15 9.13 12.898 3.67282 4.84563 31.07 1495.35 1023.412 9.45 9.43 12.884 3.67371 4.84863 31.09 1495.33 1023.432 9.75 9.73 12.848 3.67372 4.85322 31.12 1495.25 1023.463 10.05 10.03 12.807 3.67294 4.85743 31.15 1495.15 1023.492 10.35 10.33 12.767 3.67192 4.86128 31.17 1495.04 1023.520 10.65 10.63 12.729 3.67014 4.86388 31.19 1494.94 1023.540 10.95 10.93 12.710 3.66938 4.86523 31.19 1494.89 1023.551 11.25 11.23 12.705 3.66908 4.86548 31.19 1494.88 1023.554 11.55 11.52 12.694 3.66871 4.86643 31.20 1494.85 1023.562 11.85 11.82 12.678 3.66928 4.86926 31.22 1494.82 1023.581 12.22 12.19 12.676 3.66974 4.87008 31.22 1494.83 1023.587