*2026/01/16 09:57:48.65 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/04/23 19:54:17.000 END TIME : UTC 2024/04/23 19:54:31.200 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 21.48 2 Depth metres 0.15 21.4 3 Temperature 'deg C (ITS90)' 9.957 11.578 4 Conductivity S/m 3.40175 3.47245 5 Conductance:Specific S/m 4.66917 4.96673 6 Salinity PSS-78 29.7 31.61 7 Speed:Sound m/s 1485.73 1489.1 8 Density kg/m^3 1022.558 1024.408 $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 : 2024-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 76 LATITUDE : 48 55.68390 N ! (deg min) LONGITUDE : 125 23.66910 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240423_195417 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 08:59:57 72 72 MERGEHDR 1.3 2026/01/16 09:53:49 72 72 HDREDIT2 3.2 2026/01/16 09:55:03 ? ? REMOVECH 8.2 2026/01/16 09:56:14 72 72 CALIB 12.1 2026/01/16 09:56:48 72 72 CLEAN 5.3 2026/01/16 09:57:48 72 72 $END $REMARKS -HEADER EDITS: 2026/01/16 09:55:03 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 09:56:14 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:56:48 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 09:57:46 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 11.557 3.42270 4.68126 29.78 1489.06 1022.620 0.45 0.45 11.568 3.42249 4.67964 29.77 1489.08 1022.611 0.75 0.75 11.571 3.42296 4.67991 29.77 1489.10 1022.614 1.05 1.05 11.578 3.42019 4.67521 29.74 1489.09 1022.589 1.35 1.35 11.563 3.41440 4.66917 29.70 1488.99 1022.558 1.65 1.64 11.524 3.42143 4.68375 29.80 1488.98 1022.643 1.95 1.94 11.503 3.42021 4.68488 29.80 1488.92 1022.653 2.25 2.24 11.422 3.41661 4.69026 29.83 1488.67 1022.691 2.55 2.54 11.355 3.41153 4.69198 29.84 1488.45 1022.708 2.85 2.84 11.306 3.40825 4.69376 29.84 1488.29 1022.724 3.15 3.14 11.255 3.40431 4.69490 29.85 1488.12 1022.736 3.45 3.44 11.217 3.40175 4.69637 29.85 1488.00 1022.749 3.75 3.74 11.158 3.40463 4.70797 29.93 1487.88 1022.819 4.05 4.04 11.119 3.40487 4.71342 29.96 1487.79 1022.854 4.35 4.34 11.095 3.40525 4.71704 29.98 1487.74 1022.877 4.65 4.63 11.069 3.40628 4.72188 30.02 1487.69 1022.907 4.95 4.93 11.048 3.40695 4.72554 30.04 1487.65 1022.930 5.25 5.23 11.027 3.40844 4.73044 30.07 1487.62 1022.960 5.55 5.53 11.011 3.40950 4.73391 30.09 1487.59 1022.982 5.85 5.83 11.000 3.41051 4.73684 30.11 1487.58 1023.000 6.15 6.13 10.992 3.41152 4.73930 30.13 1487.58 1023.016 6.45 6.43 10.978 3.41281 4.74296 30.15 1487.56 1023.038 6.75 6.73 10.967 3.41341 4.74524 30.17 1487.54 1023.053 7.05 7.03 10.915 3.41629 4.75603 30.24 1487.45 1023.118 7.35 7.33 10.877 3.42007 4.76632 30.31 1487.40 1023.179 7.65 7.62 10.839 3.42494 4.77824 30.39 1487.37 1023.249 7.95 7.92 10.789 3.42566 4.78591 30.44 1487.25 1023.296 8.25 8.22 10.752 3.42636 4.79178 30.47 1487.17 1023.333 8.55 8.52 10.715 3.42636 4.79676 30.50 1487.08 1023.364 8.85 8.82 10.675 3.42832 4.80489 30.56 1487.01 1023.413 9.15 9.12 10.645 3.42970 4.81093 30.60 1486.95 1023.450 9.45 9.42 10.615 3.43226 4.81855 30.65 1486.91 1023.496 9.75 9.72 10.555 3.43382 4.82894 30.71 1486.78 1023.559 10.05 10.01 10.515 3.43574 4.83699 30.76 1486.70 1023.607 10.35 10.31 10.489 3.43678 4.84201 30.80 1486.65 1023.638 10.65 10.61 10.467 3.43926 4.84859 30.84 1486.63 1023.677 10.95 10.91 10.457 3.44068 4.85184 30.86 1486.63 1023.697 11.25 11.21 10.430 3.44110 4.85618 30.89 1486.57 1023.724 11.55 11.51 10.369 3.43962 4.86248 30.93 1486.40 1023.764 11.85 11.81 10.337 3.43942 4.86655 30.95 1486.32 1023.790 12.15 12.11 10.323 3.43948 4.86858 30.96 1486.29 1023.804 12.45 12.40 10.314 3.43781 4.86752 30.95 1486.25 1023.800 12.75 12.70 10.304 3.43687 4.86761 30.95 1486.22 1023.802 13.05 13.00 10.268 3.43666 4.87224 30.98 1486.13 1023.832 13.35 13.30 10.240 3.43749 4.87727 31.01 1486.07 1023.863 13.65 13.60 10.211 3.43807 4.88204 31.04 1486.01 1023.892 13.95 13.90 10.174 3.43976 4.88967 31.09 1485.94 1023.938 14.25 14.20 10.133 3.44465 4.90229 31.18 1485.90 1024.011 14.55 14.50 10.100 3.44751 4.91101 31.23 1485.85 1024.063 14.85 14.79 10.078 3.44901 4.91616 31.27 1485.82 1024.094 15.15 15.09 10.070 3.44962 4.91826 31.28 1485.81 1024.107 15.45 15.39 10.068 3.45080 4.92009 31.29 1485.82 1024.119 15.75 15.69 10.070 3.45192 4.92146 31.30 1485.85 1024.127 16.05 15.99 10.072 3.45270 4.92223 31.31 1485.87 1024.133 16.35 16.29 10.053 3.45375 4.92644 31.34 1485.84 1024.158 16.65 16.59 10.026 3.45444 4.93123 31.37 1485.78 1024.188 16.95 16.88 10.022 3.45532 4.93306 31.38 1485.78 1024.199 17.25 17.18 10.015 3.45712 4.93668 31.40 1485.79 1024.221 17.55 17.48 9.996 3.45922 4.94238 31.44 1485.77 1024.255 17.85 17.78 9.982 3.45877 4.94360 31.45 1485.74 1024.264 18.15 18.08 9.975 3.45982 4.94619 31.46 1485.74 1024.280 18.45 18.38 9.973 3.45995 4.94663 31.47 1485.74 1024.284 18.75 18.68 9.967 3.46049 4.94826 31.48 1485.73 1024.294 19.05 18.97 9.966 3.46108 4.94917 31.48 1485.75 1024.301 19.35 19.27 9.969 3.46141 4.94928 31.49 1485.76 1024.302 19.65 19.57 9.964 3.46191 4.95062 31.49 1485.76 1024.311 19.95 19.87 9.959 3.46469 4.95535 31.53 1485.79 1024.339 20.25 20.17 9.961 3.46737 4.95893 31.55 1485.83 1024.360 20.55 20.47 9.965 3.46849 4.95992 31.56 1485.86 1024.366 20.85 20.77 9.970 3.47081 4.96253 31.58 1485.90 1024.381 21.15 21.06 9.960 3.47239 4.96621 31.60 1485.90 1024.404 21.48 21.40 9.957 3.47245 4.96673 31.61 1485.90 1024.408