*2026/01/16 10:37:52.48 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/28 21:15:23.000 END TIME : UTC 2025/04/28 21:15:43.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 102 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 30.37 2 Depth metres 0.15 30.41 3 Temperature 'deg C (ITS90)' 10.109 14.106 4 Conductivity S/m 1.60075 2.83836 5 Conductance:Specific S/m 2.04667 4.03058 6 Salinity PSS-78 12.11 25.11 7 Speed:Sound m/s 1476.58 1481.45 8 Density kg/m^3 1008.553 1019.352 $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 : 112 LATITUDE : 49 7.53980 N ! (deg min) LONGITUDE : 125 44.05430 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250428_211523 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:28 102 102 MERGEHDR 1.3 2026/01/16 10:35:42 102 102 HDREDIT2 3.2 2026/01/16 10:36:13 ? ? REMOVECH 8.2 2026/01/16 10:36:40 102 102 CALIB 12.1 2026/01/16 10:37:15 102 102 CLEAN 5.3 2026/01/16 10:37:52 102 102 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:13 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 10:37:15 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 14.106 1.60075 2.04667 12.11 1477.09 1008.553 0.45 0.45 13.941 1.60110 2.05579 12.16 1476.58 1008.624 0.75 0.76 13.694 1.70903 2.20841 13.14 1476.87 1009.417 1.05 1.06 13.143 2.13940 2.80448 17.03 1479.51 1012.499 1.35 1.36 12.710 2.32790 3.08657 18.89 1480.19 1014.006 1.65 1.66 12.374 2.47402 3.30980 20.37 1480.76 1015.207 1.95 1.96 12.229 2.57629 3.46009 21.38 1481.45 1016.011 2.25 2.27 12.026 2.61449 3.53064 21.85 1481.29 1016.406 2.55 2.57 11.893 2.62393 3.55615 22.01 1481.02 1016.557 2.85 2.87 11.802 2.62977 3.57282 22.12 1480.83 1016.656 3.15 3.17 11.706 2.64513 3.60312 22.32 1480.73 1016.827 3.45 3.47 11.606 2.65153 3.62169 22.44 1480.52 1016.937 3.75 3.77 11.467 2.66022 3.64745 22.60 1480.22 1017.089 4.05 4.07 11.341 2.66307 3.66401 22.71 1479.89 1017.190 4.35 4.37 11.263 2.66661 3.67676 22.79 1479.72 1017.267 4.65 4.67 11.215 2.66337 3.67720 22.79 1479.55 1017.275 4.95 4.97 11.165 2.65878 3.67593 22.78 1479.35 1017.275 5.25 5.27 11.102 2.65840 3.68177 22.81 1479.18 1017.313 5.55 5.57 11.029 2.65840 3.68925 22.86 1478.97 1017.361 5.85 5.87 10.979 2.65976 3.69626 22.90 1478.85 1017.404 6.15 6.17 10.925 2.66085 3.70329 22.94 1478.71 1017.448 6.45 6.48 10.838 2.66134 3.71304 23.00 1478.46 1017.509 6.75 6.78 10.707 2.66266 3.72849 23.10 1478.11 1017.603 7.05 7.08 10.587 2.67582 3.75959 23.30 1477.91 1017.780 7.35 7.38 10.528 2.67960 3.77110 23.37 1477.79 1017.847 7.65 7.68 10.469 2.68529 3.78538 23.47 1477.69 1017.929 7.95 7.98 10.434 2.70500 3.81697 23.68 1477.82 1018.101 8.25 8.28 10.376 2.71096 3.83163 23.77 1477.73 1018.185 8.55 8.58 10.319 2.71205 3.83932 23.82 1477.58 1018.231 8.85 8.88 10.273 2.71365 3.84669 23.87 1477.47 1018.276 9.15 9.18 10.232 2.71527 3.85344 23.91 1477.38 1018.316 9.45 9.48 10.192 2.71492 3.85724 23.93 1477.26 1018.341 9.75 9.78 10.150 2.71765 3.86581 23.99 1477.18 1018.391 10.05 10.08 10.160 2.73120 3.88400 24.11 1477.37 1018.488 10.35 10.38 10.187 2.74235 3.89683 24.20 1477.58 1018.555 10.65 10.68 10.218 2.74645 3.89924 24.22 1477.73 1018.567 10.95 10.98 10.252 2.75791 3.91167 24.31 1477.97 1018.631 11.25 11.28 10.295 2.76675 3.91949 24.36 1478.19 1018.671 11.55 11.58 10.334 2.77059 3.92053 24.38 1478.36 1018.674 11.85 11.88 10.351 2.76840 3.91555 24.34 1478.39 1018.648 12.15 12.18 10.380 2.77463 3.92114 24.38 1478.55 1018.676 12.45 12.48 10.389 2.78569 3.93581 24.48 1478.71 1018.755 12.75 12.78 10.416 2.78414 3.93068 24.45 1478.77 1018.727 13.05 13.08 10.447 2.78677 3.93085 24.46 1478.89 1018.726 13.35 13.38 10.471 2.79375 3.93807 24.51 1479.05 1018.764 13.65 13.68 10.479 2.80114 3.94762 24.57 1479.16 1018.816 13.95 13.98 10.501 2.80362 3.94865 24.58 1479.26 1018.820 14.25 14.28 10.529 2.80636 3.94940 24.59 1479.37 1018.823 14.55 14.58 10.542 2.81473 3.95968 24.66 1479.51 1018.878 14.85 14.88 10.552 2.81720 3.96212 24.68 1479.57 1018.892 15.15 15.18 10.553 2.81749 3.96233 24.68 1479.59 1018.894 15.45 15.48 10.550 2.82019 3.96647 24.71 1479.61 1018.918 15.75 15.78 10.532 2.82199 3.97104 24.74 1479.59 1018.945 16.05 16.08 10.511 2.82314 3.97501 24.76 1479.55 1018.969 16.35 16.38 10.501 2.82387 3.97712 24.78 1479.53 1018.982 16.65 16.68 10.490 2.82400 3.97860 24.79 1479.51 1018.993 16.95 16.98 10.448 2.82415 3.98346 24.82 1479.40 1019.023 17.25 17.28 10.405 2.82419 3.98837 24.84 1479.28 1019.054 17.55 17.58 10.391 2.82429 3.99012 24.86 1479.24 1019.066 17.85 17.88 10.384 2.82416 3.99070 24.86 1479.23 1019.071 18.15 18.18 10.379 2.82465 3.99200 24.87 1479.22 1019.080 18.45 18.48 10.370 2.82417 3.99227 24.87 1479.20 1019.083 18.75 18.78 10.350 2.82395 3.99432 24.88 1479.14 1019.097 19.05 19.08 10.327 2.82350 3.99626 24.89 1479.08 1019.111 19.35 19.38 10.318 2.82240 3.99565 24.89 1479.04 1019.109 19.65 19.68 10.301 2.82239 3.99765 24.90 1479.00 1019.123 19.95 19.98 10.284 2.82173 3.99862 24.90 1478.95 1019.130 20.25 20.28 10.275 2.82209 4.00011 24.91 1478.93 1019.140 20.55 20.58 10.248 2.82098 4.00163 24.92 1478.84 1019.152 20.85 20.89 10.225 2.81880 4.00113 24.91 1478.76 1019.152 21.15 21.19 10.204 2.81714 4.00114 24.91 1478.68 1019.155 21.45 21.49 10.191 2.81631 4.00147 24.91 1478.64 1019.160 21.75 21.79 10.180 2.81541 4.00142 24.91 1478.61 1019.161 22.05 22.09 10.170 2.81440 4.00119 24.91 1478.57 1019.162 22.35 22.39 10.153 2.81419 4.00276 24.92 1478.52 1019.173 22.65 22.69 10.146 2.81476 4.00437 24.93 1478.52 1019.184 22.95 22.99 10.140 2.81363 4.00344 24.92 1478.49 1019.180 23.25 23.29 10.121 2.81323 4.00507 24.93 1478.43 1019.192 23.55 23.59 10.109 2.81332 4.00651 24.94 1478.41 1019.202 23.85 23.89 10.109 2.81571 4.01000 24.96 1478.44 1019.222 24.15 24.19 10.118 2.81716 4.01094 24.97 1478.49 1019.227 24.45 24.49 10.133 2.81991 4.01318 24.99 1478.57 1019.239 24.75 24.79 10.150 2.82136 4.01328 24.99 1478.64 1019.240 25.05 25.09 10.155 2.82139 4.01281 24.99 1478.66 1019.238 25.35 25.39 10.156 2.82224 4.01385 24.99 1478.68 1019.245 25.65 25.69 10.147 2.82112 4.01330 24.99 1478.64 1019.244 25.95 25.99 10.156 2.82235 4.01402 24.99 1478.69 1019.249 26.25 26.29 10.163 2.82306 4.01421 25.00 1478.72 1019.250 26.55 26.59 10.174 2.82416 4.01460 25.00 1478.77 1019.253 26.85 26.89 10.176 2.82493 4.01547 25.01 1478.79 1019.259 27.15 27.19 10.177 2.82543 4.01605 25.01 1478.80 1019.263 27.45 27.49 10.177 2.82609 4.01700 25.02 1478.81 1019.269 27.75 27.79 10.179 2.82812 4.01960 25.03 1478.85 1019.284 28.05 28.09 10.183 2.82975 4.02148 25.05 1478.88 1019.295 28.35 28.39 10.189 2.83138 4.02307 25.06 1478.93 1019.305 28.65 28.69 10.194 2.83182 4.02319 25.06 1478.95 1019.306 28.95 28.99 10.190 2.83350 4.02600 25.08 1478.96 1019.323 29.25 29.29 10.191 2.83546 4.02869 25.10 1478.99 1019.338 29.55 29.59 10.196 2.83645 4.02954 25.10 1479.02 1019.344 29.85 29.89 10.205 2.83712 4.02944 25.10 1479.06 1019.344 30.15 30.19 10.209 2.83822 4.03051 25.11 1479.09 1019.351 30.37 30.41 10.210 2.83836 4.03058 25.11 1479.10 1019.352