*2026/01/16 10:37:47.74 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/02/19 01:04:48.000 END TIME : UTC 2025/02/19 01:05:00.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 61 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.1 2 Depth metres 0.15 18.02 3 Temperature 'deg C (ITS90)' 9.39 10.143 4 Conductivity S/m 3.14406 3.43527 5 Conductance:Specific S/m 4.52846 4.90296 6 Salinity PSS-78 28.51 31.11 7 Speed:Sound m/s 1480.91 1485.65 8 Density kg/m^3 1021.938 1024.07 $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 : 49 LATITUDE : 49 56.73360 N ! (deg min) LONGITUDE : 126 48.84150 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250219_010448 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:25 61 61 MERGEHDR 1.3 2026/01/16 10:35:39 61 61 HDREDIT2 3.2 2026/01/16 10:36:09 ? ? REMOVECH 8.2 2026/01/16 10:36:37 61 61 CALIB 12.1 2026/01/16 10:37:11 61 61 CLEAN 5.3 2026/01/16 10:37:47 61 61 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:09 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 10:36:37 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:11 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 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 9.714 3.14760 4.53367 28.55 1480.94 1021.965 0.45 0.45 9.714 3.14406 4.52846 28.51 1480.91 1021.938 0.75 0.75 9.722 3.17130 4.56664 28.78 1481.26 1022.146 1.05 1.05 9.726 3.17496 4.57146 28.81 1481.32 1022.173 1.35 1.35 9.731 3.17761 4.57455 28.83 1481.37 1022.191 1.65 1.65 9.747 3.18497 4.58311 28.90 1481.51 1022.238 1.95 1.94 9.761 3.19705 4.59860 29.01 1481.70 1022.322 2.25 2.24 9.832 3.25854 4.67754 29.57 1482.65 1022.749 2.55 2.54 9.990 3.35415 4.79299 30.39 1484.24 1023.371 2.85 2.84 10.039 3.42634 4.88937 31.08 1485.25 1023.899 3.15 3.14 10.082 3.43310 4.89290 31.11 1485.45 1023.916 3.45 3.44 10.114 3.43482 4.89093 31.10 1485.56 1023.905 3.75 3.74 10.135 3.43527 4.88867 31.09 1485.62 1023.892 4.05 4.04 10.143 3.43519 4.88742 31.08 1485.65 1023.886 4.35 4.33 10.127 3.43477 4.88911 31.09 1485.60 1023.898 4.65 4.63 10.098 3.43279 4.89024 31.09 1485.51 1023.907 4.95 4.93 10.076 3.43174 4.89186 31.10 1485.44 1023.919 5.25 5.23 9.994 3.42397 4.89227 31.09 1485.14 1023.928 5.55 5.53 9.973 3.42157 4.89172 31.09 1485.06 1023.927 5.85 5.83 9.943 3.42024 4.89399 31.10 1484.97 1023.943 6.15 6.13 9.914 3.41763 4.89428 31.10 1484.87 1023.948 6.45 6.43 9.914 3.41706 4.89353 31.09 1484.87 1023.945 6.75 6.72 9.892 3.41615 4.89536 31.10 1484.81 1023.957 7.05 7.02 9.882 3.41549 4.89580 31.10 1484.78 1023.962 7.35 7.32 9.888 3.41534 4.89469 31.10 1484.80 1023.956 7.65 7.62 9.881 3.41457 4.89461 31.09 1484.77 1023.958 7.95 7.92 9.871 3.41438 4.89569 31.10 1484.75 1023.966 8.25 8.22 9.862 3.41375 4.89604 31.10 1484.72 1023.969 8.55 8.52 9.861 3.41390 4.89649 31.10 1484.73 1023.973 8.85 8.81 9.855 3.41378 4.89708 31.11 1484.72 1023.978 9.15 9.11 9.851 3.41348 4.89726 31.11 1484.70 1023.981 9.45 9.41 9.846 3.41312 4.89748 31.11 1484.69 1023.983 9.75 9.71 9.840 3.41269 4.89767 31.11 1484.68 1023.986 10.05 10.01 9.834 3.41237 4.89805 31.11 1484.66 1023.990 10.35 10.31 9.814 3.41069 4.89843 31.11 1484.59 1023.994 10.65 10.61 9.805 3.40975 4.89837 31.11 1484.56 1023.996 10.95 10.90 9.799 3.40862 4.89752 31.10 1484.54 1023.993 11.25 11.20 9.775 3.40664 4.89811 31.10 1484.46 1023.999 11.55 11.50 9.762 3.40526 4.89790 31.10 1484.41 1024.000 11.85 11.80 9.749 3.40466 4.89900 31.11 1484.37 1024.008 12.15 12.10 9.731 3.40315 4.89924 31.11 1484.31 1024.011 12.45 12.40 9.715 3.40163 4.89938 31.10 1484.26 1024.014 12.75 12.70 9.700 3.40041 4.89973 31.10 1484.21 1024.018 13.05 12.99 9.694 3.39965 4.89942 31.10 1484.19 1024.018 13.35 13.29 9.688 3.39925 4.89982 31.10 1484.17 1024.022 13.65 13.59 9.680 3.39676 4.89726 31.08 1484.13 1024.010 13.95 13.89 9.660 3.39645 4.89960 31.10 1484.08 1024.025 14.25 14.19 9.649 3.39598 4.90059 31.10 1484.04 1024.032 14.55 14.49 9.643 3.39602 4.90144 31.11 1484.03 1024.039 14.85 14.79 9.640 3.39516 4.90062 31.10 1484.02 1024.036 15.15 15.09 9.632 3.39520 4.90177 31.11 1484.01 1024.044 15.45 15.38 9.611 3.39254 4.90094 31.10 1483.92 1024.042 15.75 15.68 9.573 3.39017 4.90296 31.11 1483.80 1024.056 16.05 15.98 9.541 3.38067 4.89363 31.04 1483.60 1024.008 16.35 16.28 9.501 3.37805 4.89560 31.05 1483.47 1024.022 16.65 16.58 9.476 3.37371 4.89288 31.02 1483.35 1024.010 16.95 16.88 9.441 3.37222 4.89568 31.04 1483.25 1024.028 17.25 17.18 9.414 3.37090 4.89759 31.05 1483.17 1024.042 17.55 17.47 9.396 3.37030 4.89925 31.06 1483.12 1024.053 17.85 17.77 9.390 3.37164 4.90212 31.08 1483.12 1024.070 18.10 18.02 9.392 3.37169 4.90181 31.08 1483.13 1024.069