*2026/01/16 10:37:53.29 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/07 18:27:08.000 END TIME : UTC 2025/05/07 18:27:18.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 51 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 15.19 2 Depth metres 0.15 15.21 3 Temperature 'deg C (ITS90)' 9.784 15.798 4 Conductivity S/m 0.20398 3.37867 5 Conductance:Specific S/m 0.251 4.85217 6 Salinity PSS-78 1.29 30.78 7 Speed:Sound m/s 1468.87 1486.88 8 Density kg/m^3 999.981 1023.753 $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 : 126 LATITUDE : 49 13.90740 N ! (deg min) LONGITUDE : 124 49.38900 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250507_182708 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:29 51 51 MERGEHDR 1.3 2026/01/16 10:35:43 51 51 HDREDIT2 3.2 2026/01/16 10:36:14 ? ? REMOVECH 8.2 2026/01/16 10:36:40 51 51 CALIB 12.1 2026/01/16 10:37:16 51 51 CLEAN 5.3 2026/01/16 10:37:53 51 51 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:14 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 10:37:16 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 15.393 0.20441 0.25303 1.30 1468.87 1000.046 0.45 0.46 15.634 0.20398 0.25100 1.29 1469.69 1000.000 0.75 0.76 15.798 0.20585 0.25228 1.30 1470.27 999.981 1.05 1.07 15.782 0.20946 0.25680 1.32 1470.25 1000.003 1.35 1.38 15.618 0.23715 0.29193 1.51 1469.91 1000.178 1.65 1.68 15.525 0.28047 0.34604 1.81 1469.95 1000.423 1.95 1.99 15.529 0.29927 0.36920 1.94 1470.12 1000.523 2.25 2.29 15.449 0.33572 0.41498 2.19 1470.15 1000.733 2.55 2.60 15.262 0.39529 0.49089 2.62 1470.02 1001.093 2.85 2.90 14.905 0.51826 0.64936 3.53 1469.86 1001.848 3.15 3.21 14.367 0.91728 1.16504 6.59 1471.58 1004.288 3.45 3.51 13.905 1.48860 1.91311 11.25 1475.44 1007.941 3.75 3.82 13.398 2.07095 2.69671 16.33 1479.62 1011.927 4.05 4.12 12.682 2.85622 3.78991 23.66 1485.77 1017.705 4.35 4.42 11.968 3.13211 4.23629 26.70 1486.88 1020.178 4.65 4.72 11.442 3.25095 4.46044 28.22 1486.85 1021.446 4.95 5.02 10.863 3.27830 4.57061 28.93 1485.65 1022.100 5.25 5.32 10.538 3.27989 4.61469 29.20 1484.82 1022.369 5.55 5.61 10.241 3.29188 4.67054 29.56 1484.19 1022.697 5.85 5.91 10.068 3.30548 4.71302 29.84 1483.90 1022.943 6.15 6.21 9.985 3.31194 4.73339 29.97 1483.77 1023.061 6.45 6.51 9.932 3.31853 4.74996 30.08 1483.71 1023.156 6.75 6.81 9.891 3.32429 4.76378 30.18 1483.68 1023.236 7.05 7.11 9.863 3.32953 4.77512 30.25 1483.67 1023.301 7.35 7.41 9.850 3.33341 4.78256 30.30 1483.69 1023.344 7.65 7.71 9.845 3.33670 4.78798 30.34 1483.72 1023.375 7.95 8.01 9.840 3.33717 4.78925 30.35 1483.72 1023.384 8.25 8.30 9.830 3.34010 4.79492 30.39 1483.73 1023.417 8.55 8.60 9.825 3.34261 4.79915 30.41 1483.76 1023.441 8.85 8.90 9.826 3.34469 4.80198 30.43 1483.79 1023.458 9.15 9.20 9.827 3.34918 4.80836 30.48 1483.85 1023.494 9.45 9.50 9.826 3.35239 4.81313 30.51 1483.89 1023.522 9.75 9.80 9.824 3.35437 4.81614 30.53 1483.92 1023.539 10.05 10.10 9.824 3.35700 4.81992 30.56 1483.96 1023.561 10.35 10.40 9.827 3.35963 4.82338 30.58 1484.00 1023.582 10.65 10.69 9.822 3.36150 4.82666 30.61 1484.02 1023.601 10.95 10.99 9.817 3.36277 4.82925 30.62 1484.02 1023.617 11.25 11.29 9.817 3.36561 4.83332 30.65 1484.06 1023.640 11.55 11.59 9.813 3.36738 4.83644 30.67 1484.08 1023.659 11.85 11.89 9.809 3.36960 4.84019 30.70 1484.10 1023.681 12.15 12.19 9.812 3.37303 4.84466 30.73 1484.15 1023.707 12.45 12.49 9.817 3.37519 4.84710 30.75 1484.20 1023.721 12.75 12.79 9.826 3.37740 4.84897 30.76 1484.25 1023.732 13.05 13.08 9.829 3.37788 4.84925 30.77 1484.27 1023.735 13.35 13.38 9.815 3.37859 4.85217 30.78 1484.25 1023.753 13.65 13.68 9.833 3.37867 4.84976 30.77 1484.30 1023.740 13.95 13.98 9.846 3.37354 4.84059 30.71 1484.28 1023.690 14.25 14.28 9.833 3.37195 4.84018 30.70 1484.23 1023.690 14.55 14.58 9.815 3.37087 4.84115 30.71 1484.17 1023.698 14.85 14.88 9.799 3.36871 4.84029 30.70 1484.11 1023.695 15.19 15.21 9.784 3.37030 4.84464 30.73 1484.10 1023.721