*2026/01/16 09:47:05.93 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2023/12/20 20:19:47.000 END TIME : UTC 2023/12/20 20:20:05.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 91 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 27.08 2 Depth metres 0.15 27 3 Temperature 'deg C (ITS90)' 9.11 10.773 4 Conductivity S/m 1.93117 3.44621 5 Conductance:Specific S/m 2.83077 4.8169 6 Salinity PSS-78 16.99 30.64 7 Speed:Sound m/s 1464.6 1487.76 8 Density kg/m^3 1013.04 1023.548 $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 : 2023-031 AGENCY : Pacific Biological Station COUNTRY : Canada PROJECT : PSSI SCIENTIST : Deeg C. PLATFORM : Other Vessel *LOCATION GEOGRAPHIC AREA : West Coast Vancouver Island EVENT NUMBER : 113 LATITUDE : 50 35.13470 N ! (deg min) LONGITUDE : 127 27.90950 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20231220_201947 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/15 13:40:53 91 91 MERGEHDR 1.3 2026/01/15 13:41:49 91 91 HDREDIT2 3.2 2026/01/15 14:00:58 ? ? REMOVECH 8.2 2026/01/15 14:01:18 91 91 CALIB 12.1 2026/01/16 09:46:12 91 91 CLEAN 5.3 2026/01/16 09:47:05 91 91 $END $REMARKS -HEADER EDITS: 2026/01/15 14:00:58 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 2026/01/15 14:01:18 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 09:46:12 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 09:47:01 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 9.110 1.93117 2.83077 16.99 1464.60 1013.040 0.45 0.45 9.131 1.95120 2.85843 17.17 1464.90 1013.181 0.75 0.75 9.153 1.98724 2.90932 17.50 1465.40 1013.441 1.05 1.06 9.246 2.09862 3.06402 18.53 1467.02 1014.229 1.35 1.36 9.359 2.21243 3.21959 19.57 1468.72 1015.025 1.65 1.66 9.495 2.50786 3.63511 22.36 1472.64 1017.185 1.95 1.96 9.676 2.64242 3.81017 23.57 1474.78 1018.097 2.25 2.26 9.781 2.70006 3.88147 24.06 1475.78 1018.469 2.55 2.56 9.865 2.77878 3.98507 24.78 1476.96 1019.015 2.85 2.86 9.989 2.88660 4.12502 25.75 1478.60 1019.755 3.15 3.16 10.041 2.93673 4.19044 26.20 1479.35 1020.103 3.45 3.46 10.154 3.02407 4.30112 26.98 1480.71 1020.691 3.75 3.76 10.302 3.13462 4.43969 27.96 1482.44 1021.430 4.05 4.06 10.340 3.16865 4.48312 28.26 1482.95 1021.663 4.35 4.36 10.358 3.19452 4.51739 28.51 1483.31 1021.849 4.65 4.66 10.373 3.20126 4.52497 28.56 1483.44 1021.891 4.95 4.96 10.385 3.20545 4.52939 28.59 1483.53 1021.915 5.25 5.25 10.407 3.22346 4.55196 28.75 1483.81 1022.037 5.55 5.55 10.445 3.24501 4.57760 28.93 1484.17 1022.175 5.85 5.85 10.466 3.26080 4.59703 29.07 1484.42 1022.281 6.15 6.15 10.480 3.27373 4.61351 29.19 1484.61 1022.371 6.45 6.45 10.498 3.28111 4.62153 29.25 1484.75 1022.414 6.75 6.75 10.507 3.28773 4.62975 29.31 1484.86 1022.460 7.05 7.05 10.511 3.29186 4.63503 29.34 1484.92 1022.489 7.35 7.35 10.518 3.29741 4.64185 29.39 1485.01 1022.527 7.65 7.65 10.530 3.30352 4.64898 29.44 1485.12 1022.566 7.95 7.95 10.534 3.31026 4.65786 29.51 1485.22 1022.616 8.25 8.25 10.544 3.31597 4.66455 29.55 1485.32 1022.653 8.55 8.54 10.550 3.32059 4.67025 29.59 1485.39 1022.685 8.85 8.84 10.566 3.32450 4.67367 29.62 1485.49 1022.703 9.15 9.14 10.579 3.33390 4.68517 29.70 1485.64 1022.767 9.45 9.44 10.604 3.34886 4.70290 29.83 1485.89 1022.863 9.75 9.74 10.615 3.35532 4.71058 29.88 1485.99 1022.905 10.05 10.04 10.625 3.35924 4.71478 29.92 1486.07 1022.929 10.35 10.34 10.638 3.37609 4.73660 30.07 1486.31 1023.048 10.65 10.64 10.661 3.38766 4.74982 30.17 1486.51 1023.120 10.95 10.94 10.669 3.39024 4.75240 30.18 1486.57 1023.135 11.25 11.23 10.673 3.39240 4.75489 30.20 1486.61 1023.149 11.55 11.53 10.680 3.39468 4.75710 30.22 1486.66 1023.162 11.85 11.83 10.682 3.39633 4.75919 30.23 1486.69 1023.175 12.15 12.13 10.684 3.39843 4.76181 30.25 1486.73 1023.190 12.45 12.43 10.688 3.40167 4.76580 30.28 1486.78 1023.213 12.75 12.73 10.692 3.40259 4.76664 30.29 1486.80 1023.219 13.05 13.03 10.695 3.40306 4.76685 30.29 1486.82 1023.221 13.35 13.33 10.698 3.40509 4.76927 30.31 1486.86 1023.235 13.65 13.63 10.701 3.40761 4.77239 30.33 1486.90 1023.253 13.95 13.92 10.704 3.40974 4.77504 30.35 1486.94 1023.269 14.25 14.22 10.708 3.41010 4.77502 30.35 1486.96 1023.270 14.55 14.52 10.711 3.41005 4.77458 30.34 1486.97 1023.268 14.85 14.82 10.711 3.41031 4.77484 30.35 1486.98 1023.271 15.15 15.12 10.711 3.41202 4.77722 30.36 1487.01 1023.285 15.45 15.42 10.714 3.41358 4.77907 30.38 1487.04 1023.296 15.75 15.72 10.715 3.41615 4.78255 30.40 1487.07 1023.317 16.05 16.02 10.716 3.41725 4.78386 30.41 1487.10 1023.325 16.35 16.31 10.720 3.41800 4.78450 30.41 1487.12 1023.330 16.65 16.61 10.727 3.42188 4.78897 30.45 1487.19 1023.355 16.95 16.91 10.731 3.42577 4.79387 30.48 1487.25 1023.383 17.25 17.21 10.734 3.42751 4.79591 30.50 1487.28 1023.395 17.55 17.51 10.733 3.42798 4.79661 30.50 1487.29 1023.400 17.85 17.81 10.732 3.42807 4.79693 30.50 1487.29 1023.403 18.15 18.11 10.731 3.42864 4.79784 30.51 1487.30 1023.409 18.45 18.41 10.735 3.42915 4.79800 30.51 1487.32 1023.411 18.75 18.70 10.741 3.43090 4.79963 30.52 1487.36 1023.421 19.05 19.00 10.744 3.43106 4.79947 30.52 1487.38 1023.421 19.35 19.30 10.743 3.43172 4.80059 30.53 1487.39 1023.429 19.65 19.60 10.745 3.43182 4.80049 30.53 1487.40 1023.429 19.95 19.90 10.743 3.43194 4.80090 30.53 1487.40 1023.433 20.25 20.20 10.745 3.43222 4.80104 30.53 1487.41 1023.435 20.55 20.50 10.745 3.43247 4.80131 30.53 1487.42 1023.437 20.85 20.80 10.747 3.43282 4.80158 30.54 1487.44 1023.440 21.15 21.09 10.748 3.43253 4.80100 30.53 1487.44 1023.438 21.45 21.39 10.748 3.43264 4.80117 30.53 1487.45 1023.440 21.75 21.69 10.750 3.43270 4.80104 30.53 1487.46 1023.441 22.05 21.99 10.751 3.43459 4.80345 30.55 1487.49 1023.455 22.35 22.29 10.753 3.43528 4.80416 30.55 1487.51 1023.460 22.65 22.59 10.752 3.43592 4.80519 30.56 1487.51 1023.467 22.95 22.89 10.757 3.43766 4.80697 30.57 1487.55 1023.478 23.25 23.19 10.761 3.44009 4.80982 30.59 1487.60 1023.494 23.55 23.49 10.765 3.44179 4.81168 30.61 1487.63 1023.505 23.85 23.78 10.765 3.44219 4.81229 30.61 1487.64 1023.510 24.15 24.08 10.766 3.44218 4.81202 30.61 1487.65 1023.510 24.45 24.38 10.767 3.44240 4.81227 30.61 1487.66 1023.512 24.75 24.68 10.765 3.44299 4.81331 30.62 1487.67 1023.519 25.05 24.98 10.769 3.44409 4.81437 30.63 1487.69 1023.526 25.35 25.28 10.770 3.44499 4.81543 30.63 1487.71 1023.533 25.65 25.58 10.772 3.44459 4.81465 30.63 1487.72 1023.530 25.95 25.88 10.769 3.44506 4.81569 30.64 1487.72 1023.537 26.25 26.17 10.771 3.44480 4.81511 30.63 1487.73 1023.535 26.55 26.47 10.773 3.44522 4.81545 30.63 1487.74 1023.538 26.85 26.77 10.772 3.44562 4.81612 30.64 1487.75 1023.543 27.08 27.00 10.772 3.44621 4.81690 30.64 1487.76 1023.548