*2026/01/16 09:47:05.46 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/12/19 19:40:39.000 END TIME : UTC 2023/12/19 19:40:53.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 72 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 21.41 2 Depth metres 0.15 21.33 3 Temperature 'deg C (ITS90)' 10.254 10.506 4 Conductivity S/m 3.19396 3.45704 5 Conductance:Specific S/m 4.52989 4.87907 6 Salinity PSS-78 28.58 31.05 7 Speed:Sound m/s 1482.96 1486.91 8 Density kg/m^3 1021.907 1023.891 $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 : 104 LATITUDE : 50 27.91180 N ! (deg min) LONGITUDE : 127 49.05270 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231219_194039 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:53 72 72 MERGEHDR 1.3 2026/01/15 13:41:48 72 72 HDREDIT2 3.2 2026/01/15 14:00:57 ? ? REMOVECH 8.2 2026/01/15 14:01:18 72 72 CALIB 12.1 2026/01/16 09:46:10 72 72 CLEAN 5.3 2026/01/16 09:47:05 72 72 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:57 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 09:46:10 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 10.254 3.19396 4.52989 28.58 1482.96 1021.907 0.45 0.45 10.258 3.19619 4.53261 28.60 1483.00 1021.923 0.75 0.75 10.258 3.19815 4.53534 28.62 1483.03 1021.939 1.05 1.05 10.261 3.20253 4.54119 28.66 1483.10 1021.972 1.35 1.35 10.262 3.20351 4.54237 28.67 1483.12 1021.980 1.65 1.65 10.265 3.20675 4.54669 28.70 1483.17 1022.004 1.95 1.94 10.265 3.20869 4.54935 28.72 1483.20 1022.020 2.25 2.24 10.266 3.21052 4.55192 28.74 1483.22 1022.035 2.55 2.54 10.268 3.21075 4.55193 28.74 1483.24 1022.036 2.85 2.84 10.270 3.21559 4.55856 28.78 1483.31 1022.073 3.15 3.14 10.273 3.22172 4.56686 28.84 1483.39 1022.120 3.45 3.44 10.273 3.22453 4.57075 28.87 1483.43 1022.142 3.75 3.74 10.275 3.22648 4.57328 28.89 1483.47 1022.157 4.05 4.04 10.280 3.22806 4.57495 28.90 1483.50 1022.167 4.35 4.34 10.285 3.23158 4.57920 28.93 1483.56 1022.191 4.65 4.64 10.297 3.23402 4.58113 28.94 1483.63 1022.202 4.95 4.94 10.310 3.23703 4.58378 28.96 1483.70 1022.217 5.25 5.24 10.328 3.26055 4.61474 29.18 1484.04 1022.385 5.55 5.53 10.346 3.26633 4.62052 29.22 1484.16 1022.417 5.85 5.83 10.359 3.26995 4.62388 29.25 1484.24 1022.435 6.15 6.13 10.368 3.27109 4.62439 29.25 1484.28 1022.439 6.45 6.43 10.372 3.27258 4.62594 29.26 1484.32 1022.448 6.75 6.73 10.378 3.27351 4.62650 29.27 1484.35 1022.452 7.05 7.03 10.384 3.27759 4.63145 29.30 1484.42 1022.480 7.35 7.33 10.392 3.28277 4.63778 29.35 1484.51 1022.515 7.65 7.63 10.396 3.28287 4.63740 29.35 1484.52 1022.514 7.95 7.93 10.398 3.28631 4.64193 29.38 1484.57 1022.539 8.25 8.23 10.402 3.28715 4.64258 29.38 1484.60 1022.544 8.55 8.53 10.408 3.29097 4.64728 29.42 1484.66 1022.570 8.85 8.82 10.411 3.29141 4.64740 29.42 1484.69 1022.572 9.15 9.12 10.417 3.29345 4.64960 29.43 1484.73 1022.585 9.45 9.42 10.425 3.29657 4.65293 29.46 1484.79 1022.604 9.75 9.72 10.430 3.30002 4.65710 29.49 1484.85 1022.628 10.05 10.02 10.433 3.30293 4.66086 29.52 1484.90 1022.649 10.35 10.32 10.433 3.30296 4.66085 29.51 1484.90 1022.650 10.65 10.62 10.434 3.30385 4.66197 29.52 1484.92 1022.658 10.95 10.92 10.435 3.30422 4.66233 29.53 1484.93 1022.661 11.25 11.22 10.436 3.30532 4.66376 29.54 1484.96 1022.670 11.55 11.52 10.439 3.30726 4.66618 29.55 1484.99 1022.684 11.85 11.81 10.440 3.30831 4.66744 29.56 1485.01 1022.692 12.15 12.11 10.443 3.31191 4.67221 29.59 1485.07 1022.719 12.45 12.41 10.447 3.31650 4.67817 29.64 1485.14 1022.753 12.75 12.71 10.452 3.32391 4.68787 29.71 1485.24 1022.807 13.05 13.01 10.463 3.34015 4.70929 29.86 1485.47 1022.924 13.35 13.31 10.481 3.36277 4.73883 30.07 1485.79 1023.086 13.65 13.61 10.493 3.37270 4.75127 30.16 1485.95 1023.154 13.95 13.91 10.497 3.37499 4.75386 30.17 1485.99 1023.169 14.25 14.21 10.499 3.37898 4.75924 30.21 1486.05 1023.200 14.55 14.50 10.500 3.38296 4.76474 30.25 1486.10 1023.231 14.85 14.80 10.502 3.38521 4.76768 30.27 1486.14 1023.248 15.15 15.10 10.503 3.38751 4.77076 30.29 1486.17 1023.266 15.45 15.40 10.505 3.39285 4.77797 30.34 1486.25 1023.307 15.75 15.70 10.505 3.39844 4.78593 30.40 1486.32 1023.352 16.05 16.00 10.502 3.40559 4.79634 30.47 1486.40 1023.410 16.35 16.30 10.504 3.41275 4.80616 30.54 1486.50 1023.465 16.65 16.60 10.506 3.42151 4.81818 30.63 1486.62 1023.532 16.95 16.89 10.505 3.42668 4.82569 30.68 1486.68 1023.575 17.25 17.19 10.501 3.43131 4.83276 30.73 1486.73 1023.615 17.55 17.49 10.494 3.43869 4.84407 30.81 1486.80 1023.679 17.85 17.79 10.482 3.44447 4.85382 30.88 1486.85 1023.735 18.15 18.09 10.472 3.44802 4.86018 30.92 1486.87 1023.772 18.45 18.39 10.463 3.45184 4.86683 30.96 1486.90 1023.810 18.75 18.69 10.450 3.45433 4.87214 31.00 1486.90 1023.842 19.05 18.99 10.444 3.45512 4.87408 31.01 1486.90 1023.854 19.35 19.28 10.440 3.45644 4.87645 31.03 1486.91 1023.869 19.65 19.58 10.433 3.45633 4.87723 31.03 1486.89 1023.875 19.95 19.88 10.429 3.45655 4.87811 31.04 1486.89 1023.881 20.25 20.18 10.427 3.45704 4.87907 31.05 1486.90 1023.888 20.55 20.48 10.427 3.45642 4.87822 31.04 1486.89 1023.885 20.85 20.78 10.428 3.45669 4.87854 31.04 1486.90 1023.888 21.15 21.08 10.428 3.45648 4.87821 31.04 1486.91 1023.887 21.41 21.33 10.427 3.45685 4.87878 31.04 1486.91 1023.891