*2026/01/16 09:47:05.84 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/12/20 18:33:51.000 END TIME : UTC 2023/12/20 18:33:58.800 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 11.73 2 Depth metres 0.15 11.7 3 Temperature 'deg C (ITS90)' 8.32 10.774 4 Conductivity S/m 1.71889 3.42492 5 Conductance:Specific S/m 2.57937 4.79132 6 Salinity PSS-78 15.3 30.46 7 Speed:Sound m/s 1459.44 1487.23 8 Density kg/m^3 1011.815 1023.348 $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 : 111 LATITUDE : 50 35.61830 N ! (deg min) LONGITUDE : 127 38.90620 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231220_183351 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:53 40 40 MERGEHDR 1.3 2026/01/15 13:41:49 40 40 HDREDIT2 3.2 2026/01/15 14:00:58 ? ? REMOVECH 8.2 2026/01/15 14:01:18 40 40 CALIB 12.1 2026/01/16 09:46:11 40 40 CLEAN 5.3 2026/01/16 09:47:05 40 40 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:58 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 09:46:11 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 8.320 1.71889 2.57937 15.30 1459.44 1011.815 0.45 0.45 8.334 1.72001 2.58000 15.31 1459.51 1011.818 0.75 0.76 8.364 1.75097 2.62402 15.59 1459.98 1012.040 1.05 1.06 8.552 1.96057 2.92168 17.54 1463.12 1013.543 1.35 1.36 9.187 2.67086 3.90624 24.17 1473.67 1018.635 1.65 1.66 9.852 3.05515 4.38302 27.52 1480.22 1021.146 1.95 1.96 10.048 3.11212 4.43977 27.93 1481.45 1021.441 2.25 2.26 10.207 3.18934 4.52946 28.57 1482.81 1021.917 2.55 2.56 10.276 3.21097 4.55118 28.73 1483.26 1022.031 2.85 2.86 10.297 3.22292 4.56548 28.84 1483.47 1022.109 3.15 3.15 10.329 3.23298 4.57552 28.91 1483.68 1022.162 3.45 3.45 10.337 3.23666 4.57967 28.94 1483.75 1022.186 3.75 3.75 10.365 3.24992 4.59484 29.05 1483.98 1022.268 4.05 4.05 10.390 3.26896 4.61845 29.22 1484.28 1022.396 4.35 4.35 10.435 3.28381 4.63360 29.33 1484.58 1022.476 4.65 4.65 10.480 3.30431 4.65657 29.49 1484.95 1022.599 4.95 4.95 10.514 3.31331 4.66480 29.55 1485.15 1022.643 5.25 5.25 10.528 3.31867 4.67047 29.60 1485.26 1022.674 5.55 5.55 10.539 3.32984 4.68475 29.70 1485.43 1022.752 5.85 5.85 10.568 3.33793 4.69230 29.75 1485.60 1022.792 6.15 6.14 10.607 3.35506 4.71127 29.89 1485.91 1022.894 6.45 6.44 10.663 3.37418 4.73062 30.03 1486.29 1022.997 6.75 6.74 10.684 3.38473 4.74271 30.12 1486.48 1023.063 7.05 7.04 10.690 3.38958 4.74865 30.16 1486.55 1023.096 7.35 7.34 10.711 3.39927 4.75945 30.24 1486.73 1023.155 7.65 7.64 10.722 3.40550 4.76669 30.29 1486.84 1023.195 7.95 7.94 10.733 3.41086 4.77271 30.34 1486.93 1023.228 8.25 8.24 10.744 3.41705 4.77995 30.39 1487.04 1023.268 8.55 8.54 10.743 3.41788 4.78124 30.40 1487.05 1023.277 8.85 8.83 10.748 3.41817 4.78088 30.39 1487.07 1023.276 9.15 9.13 10.765 3.42290 4.78531 30.43 1487.18 1023.300 9.45 9.43 10.771 3.42488 4.78717 30.44 1487.22 1023.311 9.75 9.73 10.774 3.42492 4.78694 30.44 1487.23 1023.311 10.05 10.03 10.759 3.42275 4.78581 30.43 1487.18 1023.307 10.35 10.33 10.745 3.42092 4.78524 30.42 1487.12 1023.306 10.65 10.63 10.731 3.42017 4.78605 30.43 1487.08 1023.313 10.95 10.93 10.716 3.41829 4.78540 30.42 1487.03 1023.312 11.25 11.22 10.709 3.41780 4.78560 30.42 1487.01 1023.315 11.55 11.52 10.698 3.42079 4.79132 30.46 1487.02 1023.348 11.73 11.70 10.701 3.42047 4.79049 30.46 1487.02 1023.344