*2026/01/16 09:57:48.69 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2024/04/23 20:39:41.000 END TIME : UTC 2024/04/23 20:39:52.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 60 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 17.98 2 Depth metres 0.15 17.91 3 Temperature 'deg C (ITS90)' 9.975 12.387 4 Conductivity S/m 3.38233 3.45693 5 Conductance:Specific S/m 4.59797 4.94198 6 Salinity PSS-78 29.25 31.44 7 Speed:Sound m/s 1485.59 1491.33 8 Density kg/m^3 1022.076 1024.256 $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 : 77 LATITUDE : 48 56.60550 N ! (deg min) LONGITUDE : 125 19.35800 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20240423_203941 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 08:59:57 60 60 MERGEHDR 1.3 2026/01/16 09:53:49 60 60 HDREDIT2 3.2 2026/01/16 09:55:03 ? ? REMOVECH 8.2 2026/01/16 09:56:15 60 60 CALIB 12.1 2026/01/16 09:56:48 60 60 CLEAN 5.3 2026/01/16 09:57:48 60 60 $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 09:56:15 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 12.387 3.43810 4.59797 29.27 1491.33 1022.076 0.45 0.45 12.076 3.41237 4.60189 29.27 1490.26 1022.133 0.75 0.75 11.936 3.40062 4.60344 29.27 1489.77 1022.158 1.05 1.05 11.877 3.40003 4.60991 29.31 1489.62 1022.201 1.35 1.35 11.816 3.39230 4.60715 29.28 1489.38 1022.194 1.65 1.65 11.818 3.39107 4.60514 29.27 1489.38 1022.184 1.95 1.94 11.832 3.38981 4.60166 29.25 1489.41 1022.164 2.25 2.24 11.810 3.39010 4.60488 29.27 1489.36 1022.186 2.55 2.54 11.774 3.38918 4.60813 29.29 1489.26 1022.208 2.85 2.84 11.753 3.38769 4.60875 29.29 1489.19 1022.215 3.15 3.14 11.734 3.38599 4.60874 29.29 1489.13 1022.218 3.45 3.44 11.627 3.38737 4.62412 29.38 1488.88 1022.314 3.75 3.74 11.590 3.38799 4.62962 29.42 1488.80 1022.349 4.05 4.04 11.411 3.38424 4.64729 29.53 1488.30 1022.465 4.35 4.34 11.292 3.38233 4.65986 29.60 1487.98 1022.546 4.65 4.64 11.148 3.38696 4.68489 29.76 1487.66 1022.698 4.95 4.94 11.020 3.39131 4.70753 29.91 1487.39 1022.834 5.25 5.24 10.930 3.39156 4.71969 29.99 1487.17 1022.910 5.55 5.53 10.883 3.39240 4.72704 30.03 1487.06 1022.955 5.85 5.83 10.844 3.39386 4.73416 30.08 1486.98 1022.999 6.15 6.13 10.786 3.40024 4.75081 30.19 1486.91 1023.096 6.45 6.43 10.724 3.40515 4.76596 30.29 1486.82 1023.186 6.75 6.73 10.677 3.41000 4.77904 30.37 1486.76 1023.262 7.05 7.03 10.628 3.41489 4.79240 30.46 1486.70 1023.341 7.35 7.33 10.594 3.41627 4.79899 30.51 1486.63 1023.381 7.65 7.63 10.555 3.41628 4.80423 30.54 1486.53 1023.414 7.95 7.93 10.538 3.41588 4.80589 30.55 1486.49 1023.426 8.25 8.22 10.520 3.41639 4.80908 30.57 1486.46 1023.446 8.55 8.52 10.480 3.41866 4.81771 30.62 1486.38 1023.498 8.85 8.82 10.458 3.42264 4.82630 30.68 1486.38 1023.548 9.15 9.12 10.418 3.42773 4.83903 30.77 1486.34 1023.622 9.45 9.42 10.375 3.42995 4.84793 30.82 1486.27 1023.675 9.75 9.72 10.338 3.43096 4.85443 30.87 1486.19 1023.715 10.05 10.02 10.295 3.43293 4.86315 30.92 1486.11 1023.767 10.35 10.32 10.264 3.43428 4.86935 30.96 1486.05 1023.805 10.65 10.61 10.245 3.43529 4.87350 30.99 1486.01 1023.830 10.95 10.91 10.230 3.43648 4.87716 31.01 1486.00 1023.853 11.25 11.21 10.211 3.43668 4.88016 31.03 1485.95 1023.872 11.55 11.51 10.191 3.43719 4.88362 31.05 1485.91 1023.893 11.85 11.81 10.179 3.43670 4.88465 31.06 1485.88 1023.901 12.15 12.11 10.132 3.43948 4.89512 31.13 1485.80 1023.963 12.45 12.41 10.112 3.44166 4.90092 31.16 1485.78 1023.998 12.75 12.70 10.076 3.44278 4.90755 31.21 1485.70 1024.038 13.05 13.00 10.055 3.44245 4.91014 31.22 1485.65 1024.055 13.35 13.30 10.040 3.44197 4.91153 31.23 1485.61 1024.065 13.65 13.60 10.033 3.44206 4.91257 31.24 1485.60 1024.072 13.95 13.90 10.028 3.44236 4.91374 31.24 1485.59 1024.080 14.25 14.20 10.025 3.44227 4.91404 31.25 1485.59 1024.083 14.55 14.50 10.023 3.44225 4.91428 31.25 1485.59 1024.086 14.85 14.80 10.020 3.44229 4.91469 31.25 1485.59 1024.090 15.15 15.09 10.020 3.44255 4.91512 31.25 1485.59 1024.093 15.45 15.39 10.019 3.44291 4.91574 31.26 1485.60 1024.098 15.75 15.69 10.011 3.44324 4.91739 31.27 1485.59 1024.109 16.05 15.99 10.009 3.44375 4.91835 31.27 1485.60 1024.116 16.35 16.29 10.011 3.44442 4.91904 31.28 1485.61 1024.120 16.65 16.59 10.011 3.44711 4.92289 31.31 1485.65 1024.143 16.95 16.89 10.002 3.45032 4.92869 31.35 1485.67 1024.177 17.25 17.18 9.992 3.45268 4.93359 31.38 1485.68 1024.206 17.55 17.48 9.981 3.45673 4.94090 31.43 1485.71 1024.248 17.98 17.91 9.975 3.45693 4.94198 31.44 1485.70 1024.256