*2026/01/16 10:37:54.33 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/05/27 18:43:22.000 END TIME : UTC 2025/05/27 18:43:41.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 96 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 28.78 2 Depth metres 0.15 28.67 3 Temperature 'deg C (ITS90)' 9.702 12.543 4 Conductivity S/m 2.4909 3.43882 5 Conductance:Specific S/m 3.31824 4.92565 6 Salinity PSS-78 20.44 31.29 7 Speed:Sound m/s 1481.38 1487.89 8 Density kg/m^3 1015.225 1024.227 $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 : 154 LATITUDE : 49 43.18000 N ! (deg min) LONGITUDE : 126 38.00780 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250527_184322 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:30 96 96 MERGEHDR 1.3 2026/01/16 10:35:44 96 96 HDREDIT2 3.2 2026/01/16 10:36:15 ? ? REMOVECH 8.2 2026/01/16 10:36:42 96 96 CALIB 12.1 2026/01/16 10:37:17 96 96 CLEAN 5.3 2026/01/16 10:37:54 96 96 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:15 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 10:36:42 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:17 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 12.533 2.49090 3.31824 20.44 1481.38 1015.225 0.45 0.45 12.512 2.53604 3.38031 20.86 1481.80 1015.553 0.75 0.75 12.538 2.59727 3.45954 21.40 1482.54 1015.966 1.05 1.05 12.543 2.66238 3.54575 21.98 1483.25 1016.419 1.35 1.35 12.511 2.72395 3.63088 22.56 1483.83 1016.873 1.65 1.66 12.427 2.90414 3.87979 24.27 1485.55 1018.203 1.95 1.96 12.453 3.05042 4.07234 25.60 1487.23 1019.230 2.25 2.26 12.439 3.09882 4.13855 26.06 1487.73 1019.589 2.55 2.56 12.281 3.10984 4.17076 26.27 1487.44 1019.782 2.85 2.85 12.077 3.14742 4.24449 26.77 1487.32 1020.203 3.15 3.15 11.919 3.20948 4.34667 27.47 1487.61 1020.774 3.45 3.45 11.800 3.26180 4.43182 28.05 1487.89 1021.250 3.75 3.75 11.591 3.28717 4.49184 28.45 1487.64 1021.598 4.05 4.05 11.329 3.30686 4.55128 28.84 1487.19 1021.949 4.35 4.35 11.131 3.32476 4.60098 29.17 1486.89 1022.240 4.65 4.65 10.952 3.33468 4.63770 29.41 1486.55 1022.457 4.95 4.95 10.816 3.35353 4.68164 29.71 1486.42 1022.710 5.25 5.25 10.754 3.35969 4.69835 29.82 1486.34 1022.808 5.55 5.55 10.639 3.36790 4.72506 29.99 1486.14 1022.965 5.85 5.85 10.547 3.37241 4.74357 30.11 1485.96 1023.075 6.15 6.15 10.479 3.37522 4.75665 30.19 1485.82 1023.153 6.45 6.44 10.421 3.38236 4.77456 30.31 1485.76 1023.257 6.75 6.74 10.405 3.38691 4.78311 30.37 1485.78 1023.306 7.05 7.04 10.384 3.39520 4.79763 30.47 1485.83 1023.388 7.35 7.34 10.355 3.40298 4.81256 30.57 1485.85 1023.474 7.65 7.64 10.333 3.40610 4.81998 30.62 1485.84 1023.517 7.95 7.94 10.325 3.40749 4.82309 30.64 1485.84 1023.536 8.25 8.24 10.333 3.41119 4.82717 30.67 1485.91 1023.559 8.55 8.54 10.346 3.41625 4.83255 30.71 1486.01 1023.589 8.85 8.84 10.355 3.42891 4.84925 30.83 1486.19 1023.681 9.15 9.13 10.338 3.43882 4.86556 30.94 1486.27 1023.773 9.45 9.43 10.333 3.43173 4.85628 30.88 1486.18 1023.724 9.75 9.73 10.302 3.42851 4.85597 30.87 1486.06 1023.726 10.05 10.03 10.273 3.42250 4.85147 30.84 1485.92 1023.705 10.35 10.33 10.249 3.42046 4.85181 30.84 1485.84 1023.709 10.65 10.63 10.216 3.41623 4.85034 30.82 1485.71 1023.705 10.95 10.93 10.183 3.41369 4.85140 30.83 1485.60 1023.714 11.25 11.22 10.155 3.41427 4.85606 30.85 1485.53 1023.743 11.55 11.52 10.136 3.41291 4.85676 30.86 1485.47 1023.750 11.85 11.82 10.110 3.41319 4.86064 30.88 1485.42 1023.774 12.15 12.12 10.089 3.41379 4.86445 30.91 1485.37 1023.798 12.45 12.42 10.073 3.41375 4.86667 30.92 1485.34 1023.812 12.75 12.72 10.058 3.41410 4.86915 30.93 1485.31 1023.828 13.05 13.02 10.045 3.41510 4.87248 30.96 1485.29 1023.848 13.35 13.32 10.036 3.41384 4.87187 30.95 1485.26 1023.847 13.65 13.61 10.032 3.41498 4.87411 30.97 1485.26 1023.861 13.95 13.91 10.027 3.41592 4.87612 30.98 1485.27 1023.873 14.25 14.21 10.025 3.41525 4.87545 30.97 1485.26 1023.871 14.55 14.51 10.024 3.41704 4.87817 30.99 1485.28 1023.887 14.85 14.81 10.021 3.41673 4.87808 30.99 1485.28 1023.888 15.15 15.11 10.020 3.41814 4.88031 31.01 1485.30 1023.902 15.45 15.41 10.017 3.41840 4.88099 31.01 1485.30 1023.907 15.75 15.70 10.017 3.41967 4.88285 31.02 1485.32 1023.919 16.05 16.00 10.018 3.41926 4.88214 31.02 1485.32 1023.916 16.35 16.30 10.014 3.41894 4.88219 31.02 1485.31 1023.918 16.65 16.60 10.007 3.42353 4.88984 31.07 1485.35 1023.961 16.95 16.90 9.996 3.42646 4.89549 31.11 1485.36 1023.995 17.25 17.20 9.991 3.42823 4.89872 31.13 1485.38 1024.014 17.55 17.50 9.990 3.42859 4.89945 31.14 1485.38 1024.019 17.85 17.80 9.977 3.42641 4.89808 31.13 1485.33 1024.014 18.15 18.09 9.969 3.42341 4.89499 31.10 1485.27 1023.999 18.45 18.39 9.954 3.42003 4.89224 31.08 1485.20 1023.986 18.75 18.69 9.933 3.41851 4.89291 31.08 1485.13 1023.992 19.05 18.99 9.912 3.41981 4.89780 31.12 1485.10 1024.021 19.35 19.29 9.896 3.41966 4.89974 31.13 1485.06 1024.034 19.65 19.59 9.892 3.42040 4.90143 31.14 1485.06 1024.045 19.95 19.89 9.890 3.42014 4.90128 31.14 1485.06 1024.046 20.25 20.18 9.885 3.42266 4.90560 31.17 1485.08 1024.071 20.55 20.48 9.882 3.42480 4.90919 31.19 1485.10 1024.092 20.85 20.78 9.881 3.42707 4.91251 31.21 1485.14 1024.112 21.15 21.08 9.878 3.42635 4.91193 31.21 1485.12 1024.110 21.45 21.38 9.872 3.42677 4.91337 31.22 1485.12 1024.120 21.75 21.68 9.862 3.42569 4.91321 31.22 1485.08 1024.121 22.05 21.98 9.855 3.42545 4.91381 31.22 1485.07 1024.126 22.35 22.27 9.845 3.42291 4.91166 31.20 1485.02 1024.116 22.65 22.57 9.832 3.42270 4.91315 31.21 1484.98 1024.126 22.95 22.87 9.825 3.42334 4.91501 31.22 1484.98 1024.138 23.25 23.17 9.822 3.42382 4.91615 31.23 1484.98 1024.146 23.55 23.47 9.817 3.42307 4.91579 31.23 1484.96 1024.145 23.85 23.77 9.811 3.42435 4.91848 31.25 1484.97 1024.162 24.15 24.07 9.807 3.42392 4.91840 31.24 1484.96 1024.163 24.45 24.36 9.803 3.42420 4.91945 31.25 1484.96 1024.170 24.75 24.66 9.793 3.42460 4.92143 31.26 1484.94 1024.183 25.05 24.96 9.782 3.42346 4.92131 31.26 1484.90 1024.184 25.35 25.26 9.770 3.42126 4.91978 31.25 1484.85 1024.178 25.65 25.56 9.766 3.41977 4.91824 31.24 1484.83 1024.171 25.95 25.86 9.768 3.41954 4.91772 31.23 1484.83 1024.169 26.25 26.16 9.756 3.42044 4.92058 31.25 1484.82 1024.187 26.55 26.45 9.748 3.42177 4.92366 31.27 1484.82 1024.205 26.85 26.75 9.752 3.42350 4.92562 31.29 1484.85 1024.217 27.15 27.05 9.757 3.42220 4.92304 31.27 1484.85 1024.204 27.45 27.35 9.757 3.42156 4.92206 31.26 1484.85 1024.200 27.75 27.65 9.750 3.41942 4.92009 31.25 1484.81 1024.191 28.05 27.95 9.734 3.41866 4.92127 31.25 1484.76 1024.199 28.35 28.25 9.702 3.41856 4.92565 31.28 1484.69 1024.227 28.78 28.67 9.704 3.41869 4.92546 31.28 1484.70 1024.227