*2026/01/16 10:37:49.51 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/03/11 00:25:09.000 END TIME : UTC 2025/03/11 00:25:19.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 54 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 16.15 2 Depth metres 0.15 16.17 3 Temperature 'deg C (ITS90)' 8.314 8.407 4 Conductivity S/m 2.58941 2.62273 5 Conductance:Specific S/m 3.88091 3.92783 6 Salinity PSS-78 23.91 24.23 7 Speed:Sound m/s 1470.11 1470.89 8 Density kg/m^3 1018.542 1018.848 $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 : 73 LATITUDE : 49 9.35710 N ! (deg min) LONGITUDE : 125 54.10850 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250311_002509 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:26 54 54 MERGEHDR 1.3 2026/01/16 10:35:40 54 54 HDREDIT2 3.2 2026/01/16 10:36:11 ? ? REMOVECH 8.2 2026/01/16 10:36:38 54 54 CALIB 12.1 2026/01/16 10:37:13 54 54 CLEAN 5.3 2026/01/16 10:37:49 54 54 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:11 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 10:36:38 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:13 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 8.407 2.59412 3.88258 23.93 1470.37 1018.545 0.45 0.45 8.390 2.59441 3.88495 23.94 1470.33 1018.559 0.75 0.75 8.376 2.59321 3.88485 23.94 1470.28 1018.561 1.05 1.05 8.361 2.58941 3.88091 23.91 1470.19 1018.542 1.35 1.35 8.356 2.59416 3.88863 23.96 1470.24 1018.584 1.65 1.65 8.334 2.59417 3.89114 23.98 1470.18 1018.600 1.95 1.95 8.314 2.59363 3.89276 23.99 1470.11 1018.610 2.25 2.25 8.329 2.59435 3.89205 23.98 1470.17 1018.607 2.55 2.55 8.349 2.59719 3.89392 24.00 1470.27 1018.618 2.85 2.85 8.366 2.59801 3.89316 24.00 1470.34 1018.614 3.15 3.15 8.375 2.59691 3.89048 23.98 1470.36 1018.601 3.45 3.45 8.379 2.59681 3.88991 23.98 1470.37 1018.599 3.75 3.75 8.383 2.59665 3.88916 23.97 1470.39 1018.596 4.05 4.05 8.385 2.59691 3.88937 23.97 1470.40 1018.599 4.35 4.35 8.386 2.59764 3.89027 23.98 1470.42 1018.605 4.65 4.65 8.389 2.59798 3.89052 23.98 1470.44 1018.607 4.95 4.95 8.391 2.59807 3.89041 23.98 1470.45 1018.608 5.25 5.25 8.392 2.59882 3.89140 23.99 1470.47 1018.614 5.55 5.55 8.392 2.59878 3.89134 23.99 1470.47 1018.615 5.85 5.85 8.392 2.59948 3.89237 23.99 1470.48 1018.622 6.15 6.15 8.393 2.60305 3.89763 24.03 1470.54 1018.651 6.45 6.45 8.392 2.60718 3.90395 24.07 1470.59 1018.686 6.75 6.76 8.390 2.60718 3.90409 24.07 1470.59 1018.688 7.05 7.06 8.390 2.60949 3.90755 24.09 1470.62 1018.708 7.35 7.36 8.392 2.60971 3.90766 24.10 1470.64 1018.709 7.65 7.66 8.393 2.60955 3.90738 24.09 1470.64 1018.709 7.95 7.96 8.393 2.60943 3.90715 24.09 1470.64 1018.709 8.25 8.26 8.394 2.60989 3.90775 24.10 1470.66 1018.714 8.55 8.56 8.395 2.61004 3.90786 24.10 1470.67 1018.716 8.85 8.86 8.395 2.61251 3.91158 24.12 1470.70 1018.737 9.15 9.16 8.394 2.61324 3.91279 24.13 1470.71 1018.744 9.45 9.46 8.394 2.61370 3.91348 24.13 1470.72 1018.749 9.75 9.76 8.393 2.61334 3.91305 24.13 1470.72 1018.748 10.05 10.06 8.391 2.61255 3.91207 24.12 1470.71 1018.745 10.35 10.36 8.391 2.61254 3.91206 24.12 1470.71 1018.746 10.65 10.66 8.391 2.61413 3.91443 24.14 1470.74 1018.760 10.95 10.96 8.391 2.61441 3.91486 24.14 1470.75 1018.763 11.25 11.26 8.391 2.61409 3.91437 24.14 1470.75 1018.762 11.55 11.56 8.390 2.61389 3.91416 24.14 1470.75 1018.762 11.85 11.86 8.389 2.61383 3.91422 24.14 1470.75 1018.764 12.15 12.16 8.389 2.61606 3.91754 24.16 1470.78 1018.783 12.45 12.46 8.389 2.61810 3.92066 24.18 1470.81 1018.801 12.75 12.76 8.388 2.62107 3.92514 24.21 1470.85 1018.826 13.05 13.06 8.388 2.62246 3.92728 24.23 1470.87 1018.838 13.35 13.36 8.387 2.62273 3.92783 24.23 1470.88 1018.843 13.65 13.66 8.386 2.62221 3.92710 24.22 1470.87 1018.840 13.95 13.96 8.386 2.62144 3.92598 24.22 1470.87 1018.836 14.25 14.26 8.385 2.62167 3.92639 24.22 1470.87 1018.839 14.55 14.56 8.384 2.62145 3.92619 24.22 1470.87 1018.839 14.85 14.86 8.384 2.62236 3.92754 24.23 1470.89 1018.848 15.15 15.16 8.383 2.62187 3.92690 24.22 1470.88 1018.846 15.45 15.46 8.384 2.62103 3.92563 24.21 1470.88 1018.840 15.75 15.76 8.382 2.62028 3.92469 24.21 1470.87 1018.837 16.15 16.17 8.384 2.62003 3.92404 24.20 1470.88 1018.835