*2026/01/16 09:47:01.52 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/08/29 01:18:18.000 END TIME : UTC 2023/08/29 01:18:25.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 40 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 11.9 2 Depth metres 0.15 11.87 3 Temperature 'deg C (ITS90)' 14.347 17.789 4 Conductivity S/m 3.64881 3.74853 5 Conductance:Specific S/m 4.34263 4.65587 6 Salinity PSS-78 27.8 29.84 7 Speed:Sound m/s 1498.68 1507 8 Density kg/m^3 1019.819 1022.182 $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 : 2 LATITUDE : 49 7.56910 N ! (deg min) LONGITUDE : 125 44.39960 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20230829_011818 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:51 40 40 MERGEHDR 1.3 2026/01/15 13:41:46 40 40 HDREDIT2 3.2 2026/01/15 14:00:52 ? ? REMOVECH 8.2 2026/01/15 14:01:17 40 40 CALIB 12.1 2026/01/16 09:45:59 40 40 CLEAN 5.3 2026/01/16 09:47:01 40 40 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:52 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 09:45:59 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 17.789 3.71630 4.34263 27.80 1507.00 1019.819 0.45 0.45 17.436 3.72609 4.39020 28.12 1506.31 1020.149 0.75 0.75 17.002 3.73471 4.44585 28.50 1505.42 1020.537 1.05 1.05 16.811 3.74227 4.47521 28.70 1505.07 1020.734 1.35 1.35 16.555 3.74853 4.51036 28.94 1504.55 1020.975 1.65 1.65 16.338 3.74243 4.52662 29.04 1504.01 1021.104 1.95 1.95 16.124 3.74069 4.54808 29.18 1503.51 1021.261 2.25 2.25 15.930 3.73015 4.55679 29.23 1502.96 1021.344 2.55 2.55 15.687 3.72724 4.58036 29.39 1502.38 1021.516 2.85 2.85 15.603 3.71964 4.58054 29.38 1502.11 1021.533 3.15 3.15 15.456 3.71702 4.59395 29.47 1501.75 1021.632 3.45 3.44 15.349 3.71674 4.60576 29.55 1501.51 1021.716 3.75 3.74 15.298 3.71686 4.61172 29.59 1501.40 1021.758 4.05 4.04 15.278 3.71359 4.60995 29.57 1501.32 1021.753 4.35 4.34 15.251 3.71309 4.61246 29.59 1501.26 1021.773 4.65 4.64 15.233 3.71158 4.61263 29.59 1501.20 1021.778 4.95 4.94 15.195 3.71080 4.61604 29.61 1501.11 1021.804 5.25 5.24 15.141 3.70725 4.61784 29.62 1500.96 1021.824 5.55 5.54 15.040 3.70107 4.62176 29.64 1500.66 1021.863 5.85 5.84 14.965 3.68380 4.60880 29.54 1500.31 1021.805 6.15 6.14 14.889 3.67429 4.60564 29.52 1500.04 1021.801 6.45 6.44 14.789 3.66712 4.60825 29.53 1499.74 1021.832 6.75 6.74 14.675 3.66065 4.61332 29.56 1499.41 1021.879 7.05 7.04 14.574 3.65814 4.62186 29.61 1499.15 1021.943 7.35 7.34 14.509 3.65651 4.62746 29.65 1498.98 1021.984 7.65 7.63 14.484 3.65259 4.62537 29.63 1498.89 1021.978 7.95 7.93 14.452 3.64881 4.62439 29.62 1498.78 1021.979 8.25 8.23 14.409 3.65035 4.63138 29.67 1498.70 1022.025 8.55 8.53 14.395 3.65399 4.63765 29.71 1498.71 1022.062 8.85 8.83 14.395 3.65585 4.64004 29.73 1498.73 1022.077 9.15 9.13 14.396 3.65663 4.64091 29.73 1498.74 1022.083 9.45 9.43 14.386 3.65787 4.64358 29.75 1498.74 1022.100 9.75 9.73 14.376 3.65835 4.64543 29.76 1498.73 1022.113 10.05 10.03 14.370 3.65650 4.64377 29.75 1498.70 1022.106 10.35 10.33 14.356 3.65743 4.64664 29.77 1498.68 1022.125 10.65 10.63 14.347 3.65915 4.64980 29.79 1498.68 1022.145 10.95 10.93 14.363 3.65972 4.64868 29.79 1498.73 1022.138 11.25 11.22 14.370 3.66128 4.64980 29.79 1498.77 1022.144 11.55 11.52 14.354 3.66273 4.65355 29.82 1498.75 1022.168 11.90 11.87 14.355 3.66468 4.65587 29.84 1498.78 1022.182