*2026/01/16 10:37:45.96 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/01/23 19:10:21.000 END TIME : UTC 2025/01/23 19:10:37.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 84 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 25.07 2 Depth metres 0.15 24.97 3 Temperature 'deg C (ITS90)' 7.96 9.957 4 Conductivity S/m 3.08079 3.43376 5 Conductance:Specific S/m 4.67321 4.91156 6 Salinity PSS-78 29.29 31.21 7 Speed:Sound m/s 1475.29 1485.48 8 Density kg/m^3 1022.806 1024.12 $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 : 29 LATITUDE : 48 54.61920 N ! (deg min) LONGITUDE : 125 27.95130 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250123_191021 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:23 84 84 MERGEHDR 1.3 2026/01/16 10:35:38 84 84 HDREDIT2 3.2 2026/01/16 10:36:08 ? ? REMOVECH 8.2 2026/01/16 10:36:37 84 84 CALIB 12.1 2026/01/16 10:37:10 84 84 CLEAN 5.3 2026/01/16 10:37:45 84 84 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:08 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 10:37:10 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 7.994 3.08752 4.67897 29.33 1475.44 1022.829 0.45 0.45 7.981 3.08466 4.67636 29.31 1475.37 1022.816 0.75 0.75 7.976 3.08562 4.67860 29.33 1475.37 1022.830 1.05 1.05 7.974 3.08536 4.67844 29.33 1475.37 1022.830 1.35 1.35 7.965 3.08343 4.67686 29.31 1475.32 1022.823 1.65 1.64 7.960 3.08213 4.67561 29.30 1475.30 1022.818 1.95 1.94 7.962 3.08079 4.67321 29.29 1475.29 1022.806 2.25 2.24 7.978 3.08636 4.67938 29.33 1475.41 1022.841 2.55 2.54 8.008 3.10087 4.69717 29.46 1475.69 1022.938 2.85 2.84 8.043 3.10423 4.69730 29.47 1475.83 1022.939 3.15 3.14 8.077 3.10962 4.70057 29.49 1476.00 1022.957 3.45 3.44 8.104 3.11480 4.70450 29.52 1476.15 1022.979 3.75 3.74 8.128 3.11960 4.70846 29.56 1476.28 1023.001 4.05 4.04 8.144 3.12358 4.71218 29.58 1476.38 1023.023 4.35 4.34 8.159 3.12647 4.71438 29.60 1476.47 1023.035 4.65 4.63 8.172 3.12699 4.71325 29.59 1476.52 1023.030 4.95 4.93 8.185 3.12803 4.71298 29.59 1476.57 1023.030 5.25 5.23 8.196 3.12921 4.71323 29.60 1476.62 1023.032 5.55 5.53 8.203 3.12986 4.71325 29.60 1476.65 1023.033 5.85 5.83 8.209 3.13049 4.71327 29.60 1476.69 1023.034 6.15 6.13 8.217 3.13105 4.71304 29.60 1476.72 1023.034 6.45 6.43 8.227 3.13301 4.71451 29.61 1476.78 1023.043 6.75 6.73 8.235 3.13434 4.71536 29.62 1476.82 1023.049 7.05 7.03 8.245 3.13550 4.71569 29.62 1476.87 1023.052 7.35 7.32 8.251 3.13525 4.71449 29.61 1476.89 1023.046 7.65 7.62 8.254 3.13540 4.71427 29.61 1476.90 1023.046 7.95 7.92 8.256 3.13501 4.71342 29.61 1476.91 1023.043 8.25 8.22 8.260 3.13477 4.71260 29.60 1476.92 1023.039 8.55 8.52 8.265 3.13504 4.71225 29.60 1476.94 1023.039 8.85 8.82 8.275 3.13527 4.71113 29.59 1476.98 1023.034 9.15 9.12 8.291 3.13661 4.71083 29.59 1477.04 1023.033 9.45 9.42 8.315 3.14008 4.71271 29.61 1477.16 1023.044 9.75 9.72 8.349 3.14867 4.72078 29.67 1477.37 1023.088 10.05 10.01 8.386 3.15724 4.72839 29.73 1477.58 1023.129 10.35 10.31 8.422 3.16289 4.73175 29.76 1477.76 1023.148 10.65 10.61 8.450 3.16839 4.73607 29.79 1477.91 1023.172 10.95 10.91 8.490 3.16962 4.73219 29.77 1478.04 1023.150 11.25 11.21 8.545 3.17484 4.73218 29.78 1478.27 1023.150 11.55 11.51 8.610 3.18846 4.74337 29.86 1478.62 1023.210 11.85 11.81 8.671 3.20263 4.75574 29.96 1478.97 1023.276 12.15 12.11 8.734 3.21554 4.76605 30.04 1479.31 1023.331 12.45 12.41 8.822 3.23101 4.77652 30.12 1479.75 1023.386 12.75 12.70 8.908 3.25138 4.79444 30.26 1480.25 1023.482 13.05 13.00 8.972 3.25796 4.79510 30.27 1480.51 1023.484 13.35 13.30 9.051 3.27140 4.80365 30.34 1480.90 1023.528 13.65 13.60 9.120 3.28697 4.81679 30.44 1481.28 1023.598 13.95 13.90 9.166 3.29289 4.81897 30.47 1481.48 1023.609 14.25 14.20 9.228 3.29897 4.81917 30.48 1481.73 1023.609 14.55 14.50 9.282 3.30747 4.82397 30.52 1481.98 1023.633 14.85 14.80 9.333 3.31614 4.82941 30.56 1482.23 1023.662 15.15 15.10 9.382 3.32918 4.84144 30.65 1482.53 1023.726 15.45 15.39 9.425 3.33716 4.84697 30.70 1482.75 1023.756 15.75 15.69 9.481 3.34175 4.84583 30.70 1482.95 1023.748 16.05 15.99 9.529 3.34580 4.84497 30.70 1483.14 1023.742 16.35 16.29 9.571 3.35464 4.85175 30.75 1483.36 1023.778 16.65 16.59 9.604 3.36411 4.86085 30.82 1483.57 1023.827 16.95 16.89 9.652 3.36966 4.86214 30.83 1483.77 1023.833 17.25 17.19 9.697 3.37242 4.85978 30.82 1483.93 1023.818 17.55 17.48 9.717 3.38041 4.86849 30.88 1484.08 1023.866 17.85 17.78 9.737 3.38484 4.87216 30.91 1484.19 1023.886 18.15 18.08 9.759 3.38873 4.87465 30.93 1484.30 1023.900 18.45 18.38 9.782 3.39792 4.88460 31.01 1484.48 1023.954 18.75 18.68 9.810 3.40337 4.88844 31.04 1484.63 1023.975 19.05 18.98 9.831 3.40595 4.88928 31.04 1484.72 1023.980 19.35 19.28 9.843 3.40707 4.88919 31.05 1484.77 1023.980 19.65 19.58 9.853 3.40864 4.88997 31.05 1484.82 1023.985 19.95 19.87 9.861 3.41100 4.89222 31.07 1484.87 1023.998 20.25 20.17 9.869 3.41134 4.89162 31.07 1484.90 1023.995 20.55 20.47 9.875 3.41246 4.89240 31.07 1484.94 1024.000 20.85 20.77 9.880 3.41276 4.89211 31.07 1484.96 1024.000 21.15 21.07 9.885 3.41354 4.89254 31.07 1484.99 1024.003 21.45 21.37 9.889 3.41435 4.89318 31.08 1485.01 1024.008 21.75 21.67 9.893 3.41491 4.89341 31.08 1485.03 1024.010 22.05 21.96 9.895 3.41546 4.89386 31.08 1485.05 1024.014 22.35 22.26 9.898 3.41609 4.89443 31.09 1485.07 1024.018 22.65 22.56 9.896 3.41708 4.89607 31.10 1485.08 1024.028 22.95 22.86 9.897 3.41820 4.89762 31.11 1485.10 1024.038 23.25 23.16 9.900 3.41960 4.89910 31.12 1485.13 1024.047 23.55 23.46 9.904 3.42009 4.89925 31.12 1485.15 1024.049 23.85 23.76 9.912 3.42242 4.90150 31.14 1485.21 1024.062 24.15 24.06 9.918 3.42612 4.90595 31.17 1485.27 1024.087 24.45 24.35 9.930 3.42633 4.90461 31.16 1485.31 1024.081 24.75 24.65 9.939 3.43207 4.91156 31.21 1485.41 1024.120 25.07 24.97 9.957 3.43376 4.91136 31.21 1485.48 1024.119