*2026/01/16 10:37:53.07 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/04/29 19:55:49.000 END TIME : UTC 2025/04/29 19:56:05.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 83 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 24.74 2 Depth metres 0.15 24.71 3 Temperature 'deg C (ITS90)' 10.596 10.797 4 Conductivity S/m 3.04308 3.08336 5 Conductance:Specific S/m 4.25491 4.32967 6 Salinity PSS-78 26.72 27.22 7 Speed:Sound m/s 1482.41 1483 8 Density kg/m^3 1020.383 1020.897 $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 : 122 LATITUDE : 49 15.89910 N ! (deg min) LONGITUDE : 125 51.84620 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250429_195549 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:29 83 83 MERGEHDR 1.3 2026/01/16 10:35:43 83 83 HDREDIT2 3.2 2026/01/16 10:36:14 ? ? REMOVECH 8.2 2026/01/16 10:36:40 83 83 CALIB 12.1 2026/01/16 10:37:16 83 83 CLEAN 5.3 2026/01/16 10:37:53 83 83 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:14 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 10:37:16 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 10.771 3.04960 4.26272 26.78 1482.65 1020.420 0.45 0.45 10.748 3.04447 4.25829 26.74 1482.54 1020.399 0.75 0.75 10.754 3.04308 4.25554 26.73 1482.54 1020.385 1.05 1.05 10.757 3.04454 4.25732 26.74 1482.57 1020.396 1.35 1.35 10.777 3.04453 4.25491 26.72 1482.63 1020.383 1.65 1.65 10.796 3.04766 4.25697 26.74 1482.72 1020.393 1.95 1.95 10.797 3.04878 4.25843 26.75 1482.74 1020.402 2.25 2.25 10.773 3.05068 4.26398 26.79 1482.71 1020.436 2.55 2.55 10.736 3.05205 4.27034 26.83 1482.62 1020.474 2.85 2.85 10.718 3.05145 4.27157 26.83 1482.57 1020.484 3.15 3.15 10.702 3.05154 4.27361 26.85 1482.54 1020.497 3.45 3.45 10.680 3.05195 4.27678 26.86 1482.49 1020.518 3.75 3.75 10.667 3.05196 4.27846 26.87 1482.45 1020.529 4.05 4.05 10.660 3.05161 4.27875 26.88 1482.44 1020.533 4.35 4.35 10.657 3.05197 4.27968 26.88 1482.44 1020.539 4.65 4.65 10.653 3.05192 4.28005 26.88 1482.43 1020.543 4.95 4.94 10.649 3.05232 4.28110 26.89 1482.43 1020.550 5.25 5.24 10.646 3.05164 4.28044 26.89 1482.42 1020.548 5.55 5.54 10.643 3.05180 4.28102 26.89 1482.42 1020.553 5.85 5.84 10.642 3.05157 4.28080 26.89 1482.42 1020.553 6.15 6.14 10.641 3.05177 4.28129 26.89 1482.42 1020.557 6.45 6.44 10.637 3.05181 4.28177 26.89 1482.42 1020.561 6.75 6.74 10.634 3.05154 4.28174 26.89 1482.41 1020.562 7.05 7.04 10.632 3.05183 4.28239 26.90 1482.41 1020.567 7.35 7.34 10.630 3.05160 4.28229 26.90 1482.41 1020.568 7.65 7.64 10.630 3.05153 4.28225 26.90 1482.41 1020.569 7.95 7.94 10.630 3.05182 4.28267 26.90 1482.42 1020.573 8.25 8.24 10.630 3.05117 4.28180 26.89 1482.42 1020.570 8.55 8.54 10.629 3.05088 4.28146 26.89 1482.42 1020.569 8.85 8.84 10.629 3.05118 4.28184 26.89 1482.42 1020.572 9.15 9.14 10.627 3.05222 4.28352 26.90 1482.44 1020.583 9.45 9.44 10.628 3.05171 4.28269 26.90 1482.44 1020.580 9.75 9.74 10.627 3.05233 4.28368 26.91 1482.45 1020.586 10.05 10.04 10.628 3.05441 4.28655 26.92 1482.48 1020.603 10.35 10.34 10.625 3.05418 4.28656 26.92 1482.47 1020.605 10.65 10.64 10.621 3.05459 4.28763 26.93 1482.47 1020.612 10.95 10.94 10.619 3.05526 4.28883 26.94 1482.48 1020.620 11.25 11.24 10.617 3.05549 4.28941 26.94 1482.48 1020.625 11.55 11.54 10.615 3.05598 4.29028 26.95 1482.49 1020.631 11.85 11.84 10.614 3.05587 4.29023 26.95 1482.49 1020.632 12.15 12.14 10.615 3.05602 4.29034 26.95 1482.50 1020.634 12.45 12.44 10.613 3.05645 4.29115 26.95 1482.50 1020.639 12.75 12.74 10.613 3.05604 4.29063 26.95 1482.50 1020.638 13.05 13.04 10.613 3.05648 4.29123 26.95 1482.51 1020.642 13.35 13.33 10.612 3.05629 4.29105 26.95 1482.51 1020.643 13.65 13.63 10.611 3.05571 4.29040 26.95 1482.50 1020.641 13.95 13.93 10.610 3.05496 4.28948 26.94 1482.50 1020.637 14.25 14.23 10.608 3.05578 4.29084 26.95 1482.51 1020.646 14.55 14.53 10.606 3.05632 4.29190 26.96 1482.51 1020.653 14.85 14.83 10.605 3.05572 4.29119 26.95 1482.51 1020.651 15.15 15.13 10.604 3.05625 4.29204 26.96 1482.52 1020.656 15.45 15.43 10.602 3.05590 4.29171 26.96 1482.51 1020.656 15.75 15.73 10.602 3.05647 4.29251 26.96 1482.52 1020.662 16.05 16.03 10.602 3.05660 4.29275 26.96 1482.53 1020.664 16.35 16.33 10.602 3.05709 4.29347 26.97 1482.54 1020.669 16.65 16.63 10.601 3.05676 4.29306 26.97 1482.54 1020.669 16.95 16.93 10.601 3.05683 4.29317 26.97 1482.54 1020.670 17.25 17.23 10.602 3.05734 4.29372 26.97 1482.56 1020.675 17.55 17.53 10.603 3.05776 4.29429 26.97 1482.57 1020.679 17.85 17.83 10.602 3.05930 4.29649 26.99 1482.59 1020.692 18.15 18.13 10.603 3.06141 4.29942 27.01 1482.62 1020.709 18.45 18.43 10.602 3.06222 4.30066 27.02 1482.63 1020.717 18.75 18.73 10.601 3.06378 4.30289 27.03 1482.65 1020.731 19.05 19.03 10.600 3.06667 4.30717 27.06 1482.69 1020.755 19.35 19.33 10.598 3.06916 4.31083 27.09 1482.72 1020.776 19.65 19.63 10.597 3.06964 4.31161 27.09 1482.73 1020.782 19.95 19.93 10.596 3.07085 4.31345 27.10 1482.74 1020.793 20.25 20.23 10.596 3.07306 4.31653 27.13 1482.77 1020.811 20.55 20.53 10.596 3.07840 4.32404 27.18 1482.84 1020.853 20.85 20.82 10.598 3.07990 4.32595 27.19 1482.87 1020.864 21.15 21.12 10.599 3.08092 4.32726 27.20 1482.89 1020.873 21.45 21.42 10.600 3.08156 4.32800 27.21 1482.90 1020.878 21.75 21.72 10.601 3.08103 4.32712 27.20 1482.90 1020.874 22.05 22.02 10.602 3.08177 4.32806 27.21 1482.92 1020.880 22.35 22.32 10.603 3.08273 4.32936 27.22 1482.94 1020.889 22.65 22.62 10.604 3.08246 4.32882 27.21 1482.94 1020.887 22.95 22.92 10.606 3.08295 4.32929 27.21 1482.96 1020.891 23.25 23.22 10.607 3.08258 4.32856 27.21 1482.96 1020.888 23.55 23.52 10.607 3.08336 4.32967 27.22 1482.98 1020.895 23.85 23.82 10.608 3.08303 4.32910 27.21 1482.98 1020.893 24.15 24.12 10.608 3.08316 4.32927 27.21 1482.99 1020.895 24.45 24.42 10.610 3.08332 4.32931 27.21 1483.00 1020.897 24.74 24.71 10.608 3.08276 4.32873 27.21 1482.99 1020.895