*2026/01/16 10:37:53.70 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/08 18:48:44.000 END TIME : UTC 2025/05/08 18:49:01.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 90 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 26.71 2 Depth metres 0.15 26.59 3 Temperature 'deg C (ITS90)' 8.696 12.287 4 Conductivity S/m 3.39334 3.51707 5 Conductance:Specific S/m 4.69133 5.04894 6 Salinity PSS-78 29.9 32.01 7 Speed:Sound m/s 1481.83 1491.97 8 Density kg/m^3 1022.627 1024.945 $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 : 2025-087 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 137 LATITUDE : 48 54.57700 N ! (deg min) LONGITUDE : 125 20.32210 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250508_184844 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:29 90 90 MERGEHDR 1.3 2026/01/16 10:35:43 90 90 HDREDIT2 3.2 2026/01/16 10:36:15 ? ? REMOVECH 8.2 2026/01/16 10:36:40 90 90 CALIB 12.1 2026/01/16 10:37:17 90 90 CLEAN 5.3 2026/01/16 10:37:53 90 90 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:15 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 10:36:40 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:17 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 10:37:42 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 12.287 3.51707 4.71619 30.10 1491.97 1022.734 0.45 0.45 12.156 3.49506 4.70320 29.99 1491.40 1022.679 0.75 0.75 12.044 3.47567 4.69133 29.90 1490.90 1022.627 1.05 1.05 11.985 3.49948 4.73101 30.17 1491.03 1022.853 1.35 1.35 11.937 3.49694 4.73363 30.19 1490.89 1022.873 1.65 1.64 11.924 3.49962 4.73900 30.23 1490.89 1022.905 1.95 1.94 11.867 3.48892 4.73170 30.17 1490.63 1022.872 2.25 2.24 11.734 3.47446 4.72926 30.14 1490.13 1022.874 2.55 2.54 11.643 3.47263 4.73847 30.19 1489.89 1022.935 2.85 2.84 11.561 3.46400 4.73733 30.18 1489.58 1022.938 3.15 3.14 11.474 3.45759 4.73974 30.18 1489.30 1022.961 3.45 3.44 11.376 3.45489 4.74892 30.24 1489.02 1023.022 3.75 3.74 11.267 3.45105 4.75779 30.29 1488.71 1023.082 4.05 4.04 11.165 3.44862 4.76787 30.35 1488.42 1023.148 4.35 4.34 11.052 3.44611 4.77943 30.42 1488.11 1023.223 4.65 4.63 10.880 3.44486 4.80054 30.55 1487.66 1023.355 4.95 4.93 10.734 3.43437 4.80543 30.57 1487.17 1023.395 5.25 5.23 10.651 3.43091 4.81185 30.60 1486.92 1023.438 5.55 5.53 10.576 3.43048 4.82130 30.66 1486.73 1023.497 5.85 5.83 10.522 3.42844 4.82578 30.69 1486.57 1023.527 6.15 6.13 10.465 3.42649 4.83074 30.72 1486.40 1023.560 6.45 6.43 10.368 3.42303 4.83921 30.76 1486.11 1023.615 6.75 6.73 10.218 3.42148 4.85751 30.87 1485.72 1023.728 7.05 7.02 10.050 3.41534 4.87205 30.96 1485.21 1023.820 7.35 7.32 9.879 3.40677 4.88370 31.02 1484.67 1023.897 7.65 7.62 9.780 3.40129 4.88978 31.05 1484.35 1023.937 7.95 7.92 9.650 3.39928 4.90512 31.14 1483.99 1024.031 8.25 8.22 9.521 3.39848 4.92229 31.24 1483.65 1024.134 8.55 8.52 9.429 3.39753 4.93404 31.31 1483.40 1024.204 8.85 8.82 9.376 3.39681 4.94064 31.35 1483.26 1024.245 9.15 9.11 9.310 3.39586 4.94883 31.40 1483.08 1024.294 9.45 9.41 9.257 3.39513 4.95542 31.44 1482.93 1024.334 9.75 9.71 9.231 3.39531 4.95937 31.46 1482.87 1024.359 10.05 10.01 9.211 3.39471 4.96148 31.47 1482.82 1024.372 10.35 10.31 9.184 3.39430 4.96482 31.49 1482.75 1024.393 10.65 10.61 9.164 3.39394 4.96716 31.51 1482.69 1024.408 10.95 10.91 9.153 3.39334 4.96792 31.51 1482.66 1024.414 11.25 11.20 9.135 3.39371 4.97097 31.53 1482.63 1024.433 11.55 11.50 9.119 3.39420 4.97413 31.55 1482.59 1024.453 11.85 11.80 9.105 3.39538 4.97787 31.57 1482.58 1024.475 12.15 12.10 9.093 3.39608 4.98061 31.59 1482.56 1024.492 12.45 12.40 9.080 3.39553 4.98171 31.60 1482.52 1024.500 12.75 12.70 9.064 3.39576 4.98438 31.61 1482.49 1024.516 13.05 13.00 9.046 3.39569 4.98688 31.63 1482.45 1024.532 13.35 13.29 9.033 3.39702 4.99085 31.65 1482.43 1024.556 13.65 13.59 9.023 3.39761 4.99308 31.67 1482.42 1024.570 13.95 13.89 9.014 3.39806 4.99511 31.68 1482.41 1024.583 14.25 14.19 8.999 3.39932 4.99916 31.71 1482.39 1024.607 14.55 14.49 8.987 3.39939 5.00098 31.72 1482.36 1024.619 14.85 14.79 8.979 3.39911 5.00173 31.72 1482.34 1024.624 15.15 15.08 8.972 3.39950 5.00332 31.73 1482.33 1024.635 15.45 15.38 8.965 3.39959 5.00454 31.74 1482.32 1024.643 15.75 15.68 8.959 3.40002 5.00611 31.75 1482.31 1024.653 16.05 15.98 8.952 3.40039 5.00761 31.76 1482.31 1024.663 16.35 16.28 8.947 3.39990 5.00767 31.76 1482.29 1024.665 16.65 16.58 8.945 3.39976 5.00779 31.76 1482.29 1024.667 16.95 16.88 8.932 3.39970 5.00963 31.77 1482.26 1024.679 17.25 17.17 8.922 3.39971 5.01110 31.78 1482.24 1024.688 17.55 17.47 8.914 3.39984 5.01246 31.79 1482.22 1024.697 17.85 17.77 8.905 3.40013 5.01413 31.80 1482.21 1024.708 18.15 18.07 8.899 3.40036 5.01543 31.81 1482.20 1024.717 18.45 18.37 8.892 3.40051 5.01675 31.81 1482.19 1024.726 18.75 18.67 8.885 3.40041 5.01759 31.82 1482.17 1024.732 19.05 18.96 8.880 3.40058 5.01850 31.82 1482.17 1024.738 19.35 19.26 8.875 3.40081 5.01963 31.83 1482.16 1024.746 19.65 19.56 8.865 3.40106 5.02143 31.84 1482.14 1024.758 19.95 19.86 8.858 3.40077 5.02210 31.85 1482.13 1024.763 20.25 20.16 8.851 3.40061 5.02296 31.85 1482.11 1024.769 20.55 20.46 8.844 3.40041 5.02359 31.85 1482.10 1024.774 20.85 20.76 8.840 3.40090 5.02493 31.86 1482.10 1024.783 21.15 21.05 8.836 3.40103 5.02581 31.87 1482.09 1024.789 21.45 21.35 8.828 3.40096 5.02678 31.87 1482.08 1024.796 21.75 21.65 8.824 3.40085 5.02726 31.88 1482.07 1024.800 22.05 21.95 8.818 3.40062 5.02788 31.88 1482.05 1024.805 22.35 22.25 8.813 3.40086 5.02887 31.89 1482.05 1024.812 22.65 22.55 8.812 3.40102 5.02934 31.89 1482.05 1024.816 22.95 22.84 8.800 3.40077 5.03067 31.90 1482.02 1024.825 23.25 23.14 8.786 3.40103 5.03319 31.91 1481.99 1024.841 23.55 23.44 8.776 3.40127 5.03503 31.92 1481.97 1024.852 23.85 23.74 8.775 3.40134 5.03530 31.93 1481.98 1024.855 24.15 24.04 8.779 3.40262 5.03664 31.94 1482.01 1024.864 24.45 24.34 8.780 3.40189 5.03528 31.93 1482.01 1024.857 24.75 24.63 8.761 3.40259 5.03920 31.95 1481.97 1024.881 25.05 24.93 8.738 3.40153 5.04107 31.96 1481.90 1024.893 25.35 25.23 8.711 3.40235 5.04633 31.99 1481.85 1024.924 25.65 25.53 8.708 3.40235 5.04679 32.00 1481.84 1024.928 25.95 25.83 8.708 3.40374 5.04890 32.01 1481.87 1024.941 26.25 26.13 8.709 3.40254 5.04694 32.00 1481.86 1024.932 26.55 26.43 8.699 3.40226 5.04803 32.00 1481.83 1024.939 26.71 26.59 8.696 3.40261 5.04894 32.01 1481.83 1024.945