*2026/01/16 10:37:59.00 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2025/07/23 01:18:44.000 END TIME : UTC 2025/07/23 01:19:08.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 123 DATA DESCRIPTION : CTD FILE TYPE : ASCII NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 36.8 2 Depth metres 0.15 36.61 3 Temperature 'deg C (ITS90)' 8.92 16.352 4 Conductivity S/m 3.45905 3.94623 5 Conductance:Specific S/m 4.77141 5.09931 6 Salinity PSS-78 30.8 32.39 7 Speed:Sound m/s 1483.29 1506.04 8 Density kg/m^3 1022.439 1025.257 $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 : 236 LATITUDE : 49 41.02710 N ! (deg min) LONGITUDE : 126 36.83150 W ! (deg min) *INSTRUMENT TYPE : CTD MODEL : Castaway SERIAL NUMBER : CC2009002 SOURCE FILE : CC2009002_20250723_011844 ! custom item *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.3.1 2026/01/16 10:33:35 123 123 MERGEHDR 1.3 2026/01/16 10:35:48 123 123 HDREDIT2 3.2 2026/01/16 10:36:20 ? ? REMOVECH 8.2 2026/01/16 10:36:52 123 123 CALIB 12.1 2026/01/16 10:37:22 123 123 CLEAN 5.3 2026/01/16 10:37:59 123 123 $END $REMARKS -HEADER EDITS: 2026/01/16 10:36:20 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 10:36:52 The following CHANNEL(S) were removed: Event_number -CALIB parameters: 2026/01/16 10:37:22 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 16.352 3.94614 4.77141 30.80 1506.04 1022.439 0.45 0.45 16.335 3.94623 4.77343 30.81 1506.01 1022.455 0.75 0.75 16.243 3.94386 4.78131 30.86 1505.78 1022.516 1.05 1.05 16.194 3.93882 4.78078 30.85 1505.63 1022.523 1.35 1.35 16.167 3.93960 4.78488 30.88 1505.58 1022.552 1.65 1.64 16.129 3.93628 4.78532 30.88 1505.47 1022.562 1.95 1.94 16.070 3.93222 4.78726 30.89 1505.30 1022.585 2.25 2.24 15.990 3.92513 4.78796 30.89 1505.06 1022.604 2.55 2.54 15.922 3.91898 4.78837 30.89 1504.85 1022.619 2.85 2.84 15.881 3.91448 4.78765 30.88 1504.72 1022.623 3.15 3.14 15.818 3.91267 4.79283 30.92 1504.56 1022.664 3.45 3.44 15.737 3.91227 4.80188 30.98 1504.38 1022.729 3.75 3.74 15.684 3.90537 4.79969 30.96 1504.20 1022.727 4.05 4.04 15.599 3.90275 4.80643 31.00 1503.99 1022.780 4.35 4.34 15.570 3.89938 4.80569 30.99 1503.89 1022.782 4.65 4.64 15.380 3.88545 4.81116 31.02 1503.33 1022.845 4.95 4.93 15.098 3.87412 4.83078 31.14 1502.58 1023.001 5.25 5.23 14.854 3.85759 4.83967 31.19 1501.86 1023.090 5.55 5.53 14.481 3.83870 4.86151 31.32 1500.81 1023.269 5.85 5.83 14.052 3.76704 4.82306 31.01 1499.06 1023.121 6.15 6.13 13.667 3.72249 4.81350 30.91 1497.68 1023.123 6.45 6.43 13.312 3.70542 4.83584 31.04 1496.66 1023.295 6.75 6.73 12.953 3.69876 4.87281 31.27 1495.73 1023.546 7.05 7.03 12.716 3.69463 4.89800 31.43 1495.12 1023.715 7.35 7.32 12.591 3.69237 4.91127 31.51 1494.80 1023.804 7.65 7.62 12.474 3.69096 4.92468 31.60 1494.51 1023.893 7.95 7.92 12.401 3.68739 4.92950 31.62 1494.30 1023.929 8.25 8.22 12.323 3.67863 4.92808 31.60 1494.02 1023.931 8.55 8.52 12.257 3.67373 4.93026 31.61 1493.80 1023.952 8.85 8.82 12.202 3.67250 4.93588 31.65 1493.66 1023.990 9.15 9.12 12.161 3.67287 4.94182 31.69 1493.57 1024.029 9.45 9.42 12.133 3.67307 4.94583 31.71 1493.51 1024.055 9.75 9.71 12.077 3.67149 4.95115 31.74 1493.36 1024.092 10.05 10.01 12.022 3.67268 4.96016 31.80 1493.25 1024.149 10.35 10.31 11.980 3.67335 4.96670 31.84 1493.16 1024.191 10.65 10.61 11.913 3.67156 4.97330 31.88 1492.98 1024.235 10.95 10.91 11.809 3.66608 4.97989 31.92 1492.67 1024.284 11.25 11.21 11.714 3.65953 4.98379 31.94 1492.37 1024.316 11.55 11.51 11.621 3.65191 4.98614 31.94 1492.05 1024.339 11.85 11.80 11.533 3.65072 4.99646 32.01 1491.83 1024.406 12.15 12.10 11.480 3.64805 5.00009 32.03 1491.67 1024.432 12.45 12.40 11.432 3.64305 4.99975 32.02 1491.50 1024.436 12.75 12.70 11.342 3.63713 5.00400 32.04 1491.22 1024.469 13.05 13.00 11.282 3.63533 5.00981 32.08 1491.05 1024.508 13.35 13.30 11.243 3.63398 5.01334 32.10 1490.95 1024.533 13.65 13.59 11.184 3.63192 5.01871 32.13 1490.78 1024.569 13.95 13.89 11.125 3.62999 5.02424 32.16 1490.62 1024.606 14.25 14.19 11.070 3.62842 5.02964 32.19 1490.47 1024.642 14.55 14.49 10.939 3.61682 5.03186 32.19 1490.01 1024.667 14.85 14.79 10.746 3.59191 5.02418 32.11 1489.24 1024.641 15.15 15.09 10.638 3.57474 5.01541 32.04 1488.77 1024.602 15.45 15.39 10.531 3.56136 5.01169 32.00 1488.34 1024.591 15.75 15.68 10.375 3.55834 5.02950 32.11 1487.92 1024.702 16.05 15.98 10.300 3.55819 5.03993 32.17 1487.73 1024.766 16.35 16.28 10.265 3.55588 5.04165 32.18 1487.62 1024.780 16.65 16.58 10.245 3.55439 5.04238 32.18 1487.56 1024.786 16.95 16.88 10.213 3.55306 5.04514 32.20 1487.47 1024.805 17.25 17.18 10.162 3.55356 5.05319 32.25 1487.35 1024.854 17.55 17.47 10.111 3.55232 5.05875 32.28 1487.21 1024.890 17.85 17.77 10.077 3.54239 5.04939 32.21 1487.01 1024.841 18.15 18.07 10.048 3.54040 5.05080 32.21 1486.91 1024.852 18.45 18.37 10.019 3.53426 5.04614 32.18 1486.77 1024.830 18.75 18.67 9.984 3.53044 5.04584 32.17 1486.64 1024.831 19.05 18.97 9.953 3.52826 5.04717 32.18 1486.54 1024.842 19.35 19.26 9.929 3.52725 5.04913 32.19 1486.47 1024.855 19.65 19.56 9.890 3.52531 5.05210 32.20 1486.35 1024.876 19.95 19.86 9.846 3.52365 5.05597 32.22 1486.22 1024.901 20.25 20.16 9.805 3.52124 5.05857 32.24 1486.09 1024.919 20.55 20.46 9.774 3.51698 5.05687 32.22 1485.97 1024.913 20.85 20.76 9.748 3.51319 5.05521 32.20 1485.86 1024.906 21.15 21.05 9.728 3.51007 5.05362 32.19 1485.77 1024.900 21.45 21.35 9.705 3.50803 5.05414 32.19 1485.69 1024.905 21.75 21.65 9.675 3.50745 5.05764 32.21 1485.61 1024.928 22.05 21.95 9.656 3.50886 5.06248 32.24 1485.59 1024.957 22.35 22.25 9.640 3.50819 5.06386 32.25 1485.54 1024.967 22.65 22.55 9.616 3.50820 5.06738 32.27 1485.49 1024.989 22.95 22.85 9.592 3.50753 5.06987 32.29 1485.42 1025.005 23.25 23.14 9.564 3.50466 5.06976 32.28 1485.32 1025.007 23.55 23.44 9.540 3.50139 5.06853 32.27 1485.22 1025.003 23.85 23.74 9.504 3.49755 5.06836 32.26 1485.09 1025.005 24.15 24.04 9.473 3.49575 5.07027 32.27 1484.99 1025.018 24.45 24.34 9.450 3.49318 5.06997 32.27 1484.90 1025.019 24.75 24.64 9.422 3.49226 5.07275 32.28 1484.82 1025.037 25.05 24.93 9.397 3.49073 5.07418 32.29 1484.75 1025.048 25.35 25.23 9.379 3.48928 5.07472 32.29 1484.69 1025.053 25.65 25.53 9.362 3.48821 5.07568 32.29 1484.63 1025.060 25.95 25.83 9.344 3.48715 5.07686 32.30 1484.58 1025.069 26.25 26.13 9.335 3.48639 5.07700 32.30 1484.55 1025.071 26.55 26.43 9.325 3.48585 5.07775 32.30 1484.52 1025.077 26.85 26.72 9.308 3.48590 5.08032 32.32 1484.48 1025.094 27.15 27.02 9.282 3.48500 5.08281 32.33 1484.41 1025.110 27.45 27.32 9.254 3.48117 5.08136 32.32 1484.30 1025.104 27.75 27.62 9.237 3.47799 5.07926 32.30 1484.22 1025.095 28.05 27.92 9.202 3.47675 5.08272 32.32 1484.11 1025.117 28.35 28.21 9.179 3.47569 5.08448 32.33 1484.05 1025.129 28.65 28.51 9.160 3.47465 5.08589 32.34 1483.99 1025.139 28.95 28.81 9.134 3.47375 5.08846 32.35 1483.92 1025.155 29.25 29.11 9.112 3.47251 5.08993 32.36 1483.85 1025.166 29.55 29.41 9.094 3.46986 5.08869 32.35 1483.77 1025.161 29.85 29.71 9.078 3.46760 5.08770 32.34 1483.71 1025.157 30.15 30.00 9.058 3.46699 5.08987 32.35 1483.65 1025.171 30.45 30.30 9.041 3.46593 5.09077 32.35 1483.60 1025.178 30.75 30.60 9.033 3.46627 5.09249 32.36 1483.59 1025.189 31.05 30.90 9.027 3.46609 5.09317 32.37 1483.57 1025.195 31.35 31.20 9.017 3.46583 5.09432 32.37 1483.55 1025.203 31.65 31.50 9.008 3.46576 5.09549 32.38 1483.53 1025.211 31.95 31.79 8.999 3.46550 5.09644 32.39 1483.51 1025.218 32.25 32.09 8.992 3.46457 5.09612 32.38 1483.48 1025.217 32.55 32.39 8.982 3.46417 5.09707 32.39 1483.46 1025.224 32.85 32.69 8.979 3.46377 5.09691 32.39 1483.45 1025.225 33.15 32.99 8.988 3.46310 5.09457 32.37 1483.47 1025.213 33.45 33.29 8.984 3.46204 5.09368 32.36 1483.45 1025.209 33.75 33.58 8.972 3.46138 5.09448 32.37 1483.42 1025.215 34.05 33.88 8.959 3.46135 5.09637 32.38 1483.39 1025.228 34.35 34.18 8.951 3.46144 5.09771 32.39 1483.37 1025.237 34.65 34.48 8.948 3.46014 5.09623 32.38 1483.35 1025.230 34.95 34.78 8.945 3.46114 5.09817 32.39 1483.36 1025.242 35.25 35.08 8.939 3.46052 5.09808 32.39 1483.34 1025.243 35.55 35.37 8.938 3.46101 5.09905 32.39 1483.35 1025.250 35.85 35.67 8.937 3.46032 5.09809 32.39 1483.35 1025.246 36.15 35.97 8.939 3.46026 5.09778 32.38 1483.35 1025.245 36.45 36.27 8.920 3.45905 5.09879 32.39 1483.29 1025.253 36.80 36.61 8.920 3.45937 5.09931 32.39 1483.30 1025.257