*2026/01/16 09:47:03.31 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/11/21 22:01:30.000 END TIME : UTC 2023/11/21 22:01:37.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 39 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 11.61 2 Depth metres 0.15 11.59 3 Temperature 'deg C (ITS90)' 10.167 12.162 4 Conductivity S/m 2.53287 3.53685 5 Conductance:Specific S/m 3.59735 4.75918 6 Salinity PSS-78 22.17 30.39 7 Speed:Sound m/s 1475.03 1492.05 8 Density kg/m^3 1016.927 1023.032 $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 : 68 LATITUDE : 49 40.83720 N ! (deg min) LONGITUDE : 126 36.52590 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231121_220130 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:52 39 39 MERGEHDR 1.3 2026/01/15 13:41:47 39 39 HDREDIT2 3.2 2026/01/15 14:00:55 ? ? REMOVECH 8.2 2026/01/15 14:01:18 39 39 CALIB 12.1 2026/01/16 09:46:06 39 39 CLEAN 5.3 2026/01/16 09:47:03 39 39 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:55 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 14:01:18 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:06 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 10.205 2.53287 3.59735 22.17 1475.03 1016.927 0.45 0.45 10.167 2.58261 3.67188 22.67 1475.50 1017.323 0.75 0.75 10.247 2.61947 3.71589 22.98 1476.17 1017.550 1.05 1.05 10.422 2.72452 3.84581 23.88 1477.91 1018.225 1.35 1.35 10.480 2.76123 3.89125 24.19 1478.50 1018.462 1.65 1.65 10.523 2.79454 3.93341 24.48 1479.02 1018.684 1.95 1.95 10.529 2.87022 4.03924 25.21 1479.92 1019.249 2.25 2.25 10.601 2.90436 4.07905 25.49 1480.53 1019.457 2.55 2.55 10.638 2.91898 4.09537 25.61 1480.80 1019.543 2.85 2.85 10.649 2.95539 4.14518 25.95 1481.26 1019.810 3.15 3.15 10.691 2.97616 4.16929 26.12 1481.63 1019.937 3.45 3.45 10.741 2.98787 4.17983 26.20 1481.91 1019.991 3.75 3.75 10.851 3.01524 4.20525 26.39 1482.53 1020.119 4.05 4.05 11.031 3.06423 4.25216 26.73 1483.60 1020.356 4.35 4.35 11.143 3.15359 4.36262 27.51 1484.93 1020.944 4.65 4.65 11.250 3.17642 4.38122 27.65 1485.49 1021.035 4.95 4.95 11.317 3.18518 4.38526 27.68 1485.77 1021.052 5.25 5.25 11.365 3.22938 4.44020 28.07 1486.41 1021.347 5.55 5.55 11.456 3.25501 4.46428 28.24 1486.95 1021.470 5.85 5.85 11.547 3.27159 4.47587 28.33 1487.38 1021.525 6.15 6.15 11.636 3.32348 4.53581 28.76 1488.21 1021.843 6.45 6.45 11.709 3.34995 4.56286 28.96 1488.71 1021.985 6.75 6.75 11.769 3.39046 4.61043 29.30 1489.33 1022.239 7.05 7.05 11.835 3.41724 4.63861 29.51 1489.81 1022.388 7.35 7.34 11.931 3.44064 4.65821 29.65 1490.32 1022.486 7.65 7.64 11.995 3.46426 4.68211 29.83 1490.76 1022.611 7.95 7.94 12.017 3.49234 4.71723 30.08 1491.14 1022.803 8.25 8.24 12.060 3.50918 4.73447 30.20 1491.44 1022.894 8.55 8.54 12.095 3.51990 4.74442 30.28 1491.66 1022.946 8.85 8.84 12.116 3.52539 4.74914 30.31 1491.78 1022.971 9.15 9.14 12.135 3.52918 4.75180 30.33 1491.87 1022.985 9.45 9.44 12.142 3.53061 4.75288 30.34 1491.91 1022.991 9.75 9.74 12.149 3.53203 4.75387 30.35 1491.95 1022.997 10.05 10.04 12.154 3.53417 4.75606 30.36 1491.99 1023.010 10.35 10.33 12.160 3.53628 4.75817 30.38 1492.03 1023.022 10.65 10.63 12.162 3.53656 4.75836 30.38 1492.04 1023.024 10.95 10.93 12.161 3.53685 4.75884 30.38 1492.05 1023.028 11.25 11.23 12.155 3.53657 4.75918 30.39 1492.04 1023.032 11.61 11.59 12.156 3.53643 4.75891 30.38 1492.04 1023.032